| [RHIC Collider Projections, latest version] | |
| [RHIC summary table]
[RHIC
integrated LNN plot] [RHIC
time in store plot] [Hadron colliders peak luminosity plot]
|
|
| [AtR Test (FY1995)] [Sextant Test (FY1997)] [Run-0 (FY1999)] | |
| [Run-1 (FY2000)] [Run-2 (FY2001/02)] [Run-3 (FY2003)] [Run-4 (FY2004)] [Run-5 (FY2005) ] | |
| [Run-6 (FY2006)] [Run-7 (FY2007) ] [Run-8 (FY2008)] [Run-9 (FY2009)] [Run-10 (FY2010)] | |
| Fiscal
years start on 1 October. |
Data assembled by Wolfram Fischer. Last update: 18-Nov-2009. |
| RHIC operating modes and total integrated
luminosity delivered to 5 experiments |
|||||
| Run |
species |
total
particle energy [GeV/nucleon] |
calendar time in physics |
total delivered luminosity |
average store polarization |
| Run-1 CY2000 FY2000 |
Au79+-Au79+ |
27.9 |
3
shifts |
< 0.001μb-1 | — |
| Au79+-Au79+ | 65.2 |
5.3
weeks |
20 μb-1 | — | |
| Run-2 CY2001/02 FY2001/02 |
Au79+-Au79+ | 100.0 |
15.9
weeks |
258 μb-1 | — |
| Au79+-Au79+ | 9.8 |
2
shifts |
0.4 μb-1 | — | |
| polarized p-p | 100.0 |
8.3
weeks total, no continous physics operation |
1.4 pb-1 | 14% |
|
| Run-3 CY2002/03 FY2003 |
d-Au79+ | 100.0 |
10.2
weeks |
73 nb-1 | — |
| polarized p-p | 100.0 |
9.0
weeks total, no continous physics operation |
5.5 pb-1 | 34% |
|
| Run-4 CY2003/04 FY2004 |
Au79+-Au79+ | 100.0 |
12.0
weeks |
3530 μb-1 | — |
| Au79+-Au79+ | 31.2 |
9
days |
67 μb-1 | — | |
| polarized p-p | 100.0 |
6.1
weeks total, no continous physics operation |
7.1 pb-1 | 46% |
|
| Run-5 CY2004/05 FY2005 |
Cu29+-Cu29+ | 100.0 |
7.8
weeks |
42.1 nb-1 | — |
| Cu29+-Cu29+ | 31.2 |
12
days |
1.5 nb-1 | — | |
| Cu29+-Cu29+ | 11.2 |
5
shifts |
0.02 nb-1 | — | |
| polarized p-p | 100.0 |
9.4
weeks |
29.5 pb-1 | 47% |
|
| polarized p-p | 204.9 |
2
stores |
0.1 pb-1 | 30% |
|
| Run-6 CY2006 FY2006 |
polarized p-p | 100.0 | 13.1
weeks |
88.6 pb-1 | 55% |
| polarized p-p | 31.2 | 12
days |
1.05 pb-1 | 50% |
|
| Run-7 CY2006/07 FY2006 |
Au79+-Au79+ | 100.0 |
12.8 weeks | 7250 μb-1 | — |
| Au79+-Au79+ | 4.6 |
3
shifts total, no continous physics operation |
test
only |
— | |
| Run-8 CY2007/08 FY2008 |
d-Au79+ | 100.0 | 9.0 weeks | 437 nb-1 | — |
| polarized p-p | 100.0 | 3.4
weeks |
38.4
pb-1
|
44% |
|
| Au79+-Au79+ | 4.6 | 3
shifts |
— | — | |
| Run-9 CY2008/09 FY2009 |
pol. p-p | 250.0 |
4.1 weeks | 110.4 pb-1 | 34% |
| polarized p-p | 100.0 | 9.9
weeks |
114.0 pb-1 | 56% |
|
| polarized pp2pp | 100.0 | 3.5
days |
0.6 nb-1 | 63% |
|



| Run-10 CY2009/10 FY2010 |
|||||||
| Mode 1A: Au79+ on Au79+ at 100.0 GeV/nucleon particle energy [Run-10 Au-Au web site] | |||||||
| Summary
paper: |
|||||||
| Beam
operation: Expected to begin 5-Dec-2009 |
|||||||
| Run
Coordinators: Kevin Brown, Todd Satogata, Angelika Drees |
|||||||
| Major
accomplishments and events: first use of Blue longitudinal stochastic
cooling, Yellow longitudinal stochastic cooling upgraded with microwave
link, first use of Blue and Yellow vertical stochastic cooling, 0.5 Hz
orbit feedback on ramp, test of 10 Hz orbit feedback at store, β* reduced
to 0.6 m (?), IBS suppression lattice in both rings, separation of γtr by 1.2
s, new auto transformer to reduce flattop-to-ramp MMPS glitches, ... |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| |
×1026 |
×1026 |
|||||
| γ
injection: 10.52 |
γ store: 107.396 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity
[μb-1] |
Luminosity [rel. to Run-7] |
||||
| PHENIX |
× | ||||||
| STAR |
× | ||||||
| Time in store: | |||||||
| Run-9 CY2008/09 FY2009 |
Retreat at end of Run-9, 07/15/2009 - 07/17/2009, Montauk [Retreat web site] [Summary] | ||||||
| Mode 1C: polarized p on polarized p at 100.0 GeV particle energy for pp2pp [Run-9 p-p web site] | |||||||
| Summary
paper: |
|||||||
| Beam operation: 06/29/2009 - 07/04/2009 (5 days total, 3.5 days for physics) | |||||||
| Run Coordinator: Christoph Montag (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: first operation with β* = 20 m. |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 90/64
colliding 90/88 colliding |
50 |
20 1.0 |
15-20 |
0.3×1030 6×1030 |
0.2×1030 4×1030 |
0.1 pp2pp 1.5 PHENIX |
|
| Average store polarization: 62% in Blue, 63% in Yellow (online H-jet measurements) | |||||||
| γ injection: 25.379 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity
[nb-1] |
|||||
| PHENIX |
1.0 |
593 |
vertical
polarization |
||||
| pp2pp / STAR | 20 |
25 |
vertical
polarization |
||||
| Time in
store: 67% (only 4 stores between 10 h and 17 h length) |
|||||||
| Mode 1B: polarized p on polarized p at 100.0 GeV particle energy [Run-9 p-p web site] | |||||||
| Summary
paper: |
|||||||
| Beam operation: 04/15/2009 - 06/29/2009 (74 days total, 69 days for physics) | |||||||
| Run Coordinator: Christoph Montag (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: first tests of AGS horizontal quadrupole
jump system to increase polarization, tests of new
low
level rf system, test of transverse stochastic cooling in
Yellow vertical plane with low intensity proton bunch, tests of
dedicated spin flipper in Blue ring, all RHIC service buildings with
A/C, first operational use of 10- and 12-poles. |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 109 |
135 |
0.7 |
15-20 |
50×1030 | 28×1030 | 8.3 |
|
| Average store polarization: 56% in Blue, 57% in Yellow (online H-jet measurements) | |||||||
| γ injection: 25.379 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity
[pb-1] |
Luminosity [rel. to Run-6] |
||||
| PHENIX |
0.7 |
60.7 |
1.4× | longitudinal polarization | |||
| STAR |
0.7 |
53.5 |
1.2× | longitudinal polarization | |||
| Time in store: 54% | |||||||
| Mode 1A: polarized p on polarized p at 250.0 GeV particle energy [Run-9 p-p web site] | |||||||
| Summary
paper: |
|||||||
| Beam
operation: 02/07/2009 - 04/15/09 (67 days total, 29 days for physics) |
|||||||
| Run Coordinator: Mei Bai (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: first collision of polarized proton
beam to 250 GeV, LEBT/MEBT modified to reduce emittance growth through
better matching into Linac, modification of Booster injection (smaller
β
at injection foil) to reduce emittance growth, new AGS main
magnet power supply transformer, re-alignment of
magnets near snakes for better angle control, setup in 5 weeks (2 weeks
longer than planned), 2 mrad crossing angle (beam-to-beam) in IP2 and
IP10 to reduce number of DX training quenches (6 DX training
quenches), test of new 9 MHz rf system (single cavity for both
rings) for
acceleration (not yet usable because Yellow beam cannot respond to
diples main ps switch-over from flattop to ramp supply and back), use
of main quadrupole ramp ps at injection already, first use of 4-knob
nonlinear chromaticity
correction (unlike HARMON it also reduces resonance driving terms),
upgraded CNI polarimeters in RHIC
with number of targets doubled, triplet 10 Hz cold mass measurements
and test of active cold mass damping. |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 109 |
110 |
0.7 |
18-23 |
85×1030 | 55×1030 | 18.4 |
|
| Average store polarization: 33% in Blue, 36% in Yellow (online H-jet measurements) | |||||||
| γ injection: 25.379 | γ store: 266.447 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity [pb-1] |
|||||
| PHENIX |
0.7 |
57.8 |
primarily
with longtudinal polarization |
||||
| STAR |
0.7 |
52.6 |
primarily with longtudinal polarization | ||||
| Time in
store: 53% |
|||||||
| Run-8 CY2007/08 FY2008 |
Retreat at end of Run-8, 03/31/2008 - 04/02/2008, Montauk [Retreat web site] [Summary] | ||||||
| Mode 3B: Au79+ on Au79+ at 2.5 GeV/nucleon particle energy | |||||||
| Summary
presentation (at RHIC Retreat): T. Satogata, "Run-8: Low
energy" |
|||||||
| Beam operation: 03/11/2008 - 03/12/2008 (15 h) | |||||||
| Run Coordinator: Todd Satogata | |||||||
| Major accomplishments and events: stored some beam in Yellow ring with γ = 2.685, unbunched with peak intensity 0.05×109 and lifetime of 2 min, single bunch beam with peak intensity 0.01×109 and lifetime of 2 s, orbit correction very difficult | |||||||
| Mode 3A: Au79+ on Au79+ at 4.6 GeV/nucleon particle energy | |||||||
| Summary
paper: |
|||||||
| Beam
operation: 03/10/2008 - 03/11/2008 (31 h) |
|||||||
| Run
Coordinator: Todd Satogata |
|||||||
| Major
accomplishments: STAR experiment collected a few thousand events for
physics |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 56 |
0.4 |
10 |
40-60 |
3.5×1023 | 1.2×1023 | — | |
| γ injection: 4.931 | γ store: 4.931 | ||||||
| Time in
store: (very short run) |
|||||||
| Mode 2: polarized p on polarized p at 100.0 GeV particle energy [Run-8 p-p web site] | |||||||
| Summary
paper: C. Montag, N. Abreu, L. Ahrens, M. Bai, D. Barton, A.
Bazilevski, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D.
Bruno, G. Bunce, R. Calaga, P. Cameron, R. Connolly, T. D'Otavio, A.
Drees, A.V. Fedotov, W. Fischer, G. Ganetis, C.J. Gardner, J.W. Glenn,
T. Hayes, H. Huang, P. Ingrassia, D.A. Kayran, J. Kewisch, R.C. Lee,
V.N. Litvinenko, A.U. Luccio, Y. Luo, W.W. MacKay, Y. Makdisi, N.
Malitsky, G. Marr, A. Marusic, R. Michnoff, J. Morris, B. Oerter, H.
Okada, F. Pilat, P. Pile, G. Robert-Demolaize, T. Roser, T. Satogata,
C. Schultheiss, M. Sivertz, K. Smith, S. Tepikian, D. Trbojevic, N.
Tsoupas, J. Tuozzolo, A. Zaltsman, A. Zelenski, and S.Y. Zhang, "RHIC polarized
proton performance in Run-8", proceedings of the 2008 European
Particle Accelerator Conference, Genoa, Italy (2008). |
|||||||
| Beam operation: 01/29/2008 - 03/10/2008 (41 days total, 24 days for physics) | |||||||
| Run Coordinator: Christoph Montag (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: nonlinear chromaticity correction, tested
near integer
working point in Blue (not used in operation due to large 10 Hz orbit
oscillations in triplets), tested β*= 65 cm (not used in
operation), test of 10- and 12-pole correctors to reduce background |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 109 |
150 |
1.0 |
20-25 |
35×1030 | 23×1030 | 7.5 |
|
| Average store polarization: 50% in Blue, 40% in Yellow (final H-jet measurements) | |||||||
| γ
injection: 25.379 |
γ store:
106.597 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [pb-1] |
|||||
| PHENIX | 1.0 |
19.2 |
predominantly
ver. polarization |
||||
| STAR | 1.0 |
19.2 |
ver.
polarization |
||||
| Time in
store: 60% (no rotator ramps for most part of the run) |
|||||||
| Mode 1: d at 101.9 GeV/nucleon on Au79+ at 100.0 GeV/nucleon particle energy [Run-8 d-Au web site] | |||||||
| Summary
paper: C.J. Gardner, N.P. Abreu, L. Ahrens, J. Alessi, M. Bai, D.
Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D.
Bruno, J. Butler, P. Cameron, C. Carlson, R. Connolly, A. DellaPenna,
T. D'Otavio, A. Drees, W. Fischer, W. Fu, G. Ganetis, J.W. Glenn, M.
Harvey, T. Hayes, H. Huang, P. Ingrassia, J. Kewisch, R.C. Lee, V.
Litvinenko, Y. Luo, W.W. MacKay, M. Mapes, G. Marr, A. Marusic, R.
Michnoff, C. Montag, J. Morris, B. Oerter, F. Pilat, E. Pozdeyev, V.
Ptitsyn, G. Robert-Demolaize, T. Roser, T. Russo, P. Sampson, J.
Sandberg, T. Satogata, C. Schultheiss, F. Severino, K. Smith, D.
Steski, S. Tepikian, Y. Than, P. Thieberger, D. Trbojevic, N. Tsoupas,
J. Tuozzolo, A. Zaltsman, K.L. Zeno, and S.Y. Zhang, "Setup and
performance of RHIC for the 2008 run with deuteron-gold collisions",
proceedings of the 2008 European Particle Accelerator Conference,
Genoa, Italy (2008). |
|||||||
| Beam
operation: 11/08/2007 - 01/28/2008 (80 days total, 63 days for physics) |
|||||||
| Run
Coordinator: Christopher (Kip) Gardner |
|||||||
| Major
accomplishments and events: increased length of NEG coated beam pipes
by 56 m (to
532 m total), kept machine at liquid nitrogen temperature
during the
summer shutdown again, Blue ring cool-down from 100K to 4K in 10 days,
Yellow in another 2 days, Yellow
ring lattice for gold beam with higher tunes to reduce IBS (Blue ring
has a bus problem that currently prevents higher tunes -- not critical
for deuterons), β* reduced to 0.85 m compared to 2 m in
Run-3, periodic orbit corrections in store introduced (every 1/2 hour),
service building 1004B with A/C |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [nb-1] |
|
| 95 |
100d
/ 1.0Au |
0.85 |
16-28 |
27×1028 | 13.5×1028 | 40 |
|
| γ
injection: 11.150 |
γ store:
107.396 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity [nb-1] |
Luminosity [rel. to Run-3] |
||||
| PHENIX |
0.85 |
238 |
9.8× | ||||
| STAR |
0.89 |
199 |
10.1× | ||||
| Time in
store: 58% |
|||||||
| Run-7 CY2006/07 FY2007 |
Retreat at end of Run-7, 07/16/2007 - 07/17/2007, Two Trees Inn, Connecticut [Retreat web site] [Summary] | ||||||
| Mode 1B: Au79+ on Au79+ at 4.6 GeV/nucleon particle energy [Run-7 Au-Au web site] | |||||||
| Summary
paper: T. Satogata, L. Ahrens, M. Bai, J.M. Brennan, D. Bruno, J.J.
Butler, A. Drees, A.V. Fedotov, W. Fischer, M. Harvey, T. Hayes, W.
Jappe, R.C. Lee, W.W. MacKay, G.J. Marr, R. Michnoff, B. Oerter, E.
Pozdeyev, T. Roser, F. Severino, K. Smith, S. Tepikian, and N. Tsoupas,
"RHIC
challenges for low energy operations", proceedings of the 2007
Particle Accelerator Conference, Albuquerque, New Mexico (2007). |
|||||||
| Beam operation: 06/06/2007 - 06/07/2007 (24 h total) | |||||||
| Run Coordinator: Todd Satogata | |||||||
| Major
accomplishments and events: stored and collided Au beams at half the
normal
injection energy, measured luminosity, a few hundred events recorded by
STAR |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 56 |
0.4 |
10.0 |
40-60 |
4×1023 | 0.6×1023 | — | |
| γ injection: 4.931 | γ store:
4.931 |
||||||
| Time in
store: (test of low energy running) |
|||||||
| Mode 1A: Au79+ on Au79+ at 100.0 GeV/nucleon particle energy [Run-7 Au-Au web site] | |||||||
| Summary
paper: A. Drees, L. Ahrens, J. Alessi, M. Bai, D. Barton, J.
Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, J.J.
Butler, R. Calaga, P. Cameron, R. Connolly, T. D'Ottavio, W. Fischer,
W. Fu, G. Ganetis, J. Glenn, M. Harvey, T. Hayes, H.-C. Hseuh, H.
Huang, J. Kewisch, R.C. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, G.J.
Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, B. Oerter, F.C.
Pilat, V. Ptitsyn, T. Roser, J. Sandberg, T. Satogata, C. Schultheiss,
F. Severino, K. Smith, S. Tepikian, D. Trbojevic, N. Tsoupas, J.
Tuozzolo, A. Zaltsman, and S.Y. Zhang, "Summary of the RHIC performance during the
FY07 heavy ion run", proceedings of the 2007 Particle Accelerator
Conference, Albuquerque, New Mexico (2007). |
|||||||
| Beam
operation: 02/19/2007 - 06/26/07 (125 days
total, 90 days for physics, excluding 1 day for Mode 1B) |
|||||||
| Run
Coordinator: Angelika Drees |
|||||||
| Major
accomplishments and events: kept machine at liquid nitrogen temperature
during the
summer shutdown, no DX training required, increased the total length of
NEG coated beam pipes in warm regions by 45 m to 475 m, horizontal
realignment in locations of large orbit corrector
strength, 8 sextupole families per ring for nonlinear chromaticity
correction (preparation for p, no operational benefit for Au),
AGS operation with Au31+ instead of Au32+ in
previous years (yields about 20% intensity gain), new BtA stripping
foil (Al+glassy carbon instead of carbon) reduces bunch area at AGS
injection from 0.40 eV.s/nucleon to 0.23 eV.s/nucleon, new AtR
stripping foil (W instead of Al oxide) reduces intensity loss by about
4%, start-up/ramp-up in 2
weeks (1/2 less than planned), first
use of beam scrubbing for operational purposes (2 hours at
injection to alleviate dynamic pressure rise at transition), first
operational use of orbit feedback at IP6 and IP8 (preparation for p, no
operational
benefit for Au), voltage dip from 300 kV to 150 kV at transition,
first operational use of stochastic cooling (in Yellow ring), NSRL and
AGS operation concurrent with entire RHIC run |
|||||||
| Achieved beam parameters (PHENIX/STAR): | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 103 |
1.1 |
0.83/0.77 |
17-35 |
30×1026 | 12×1026 | 380 |
|
| γ injection: 10.520 | γ store: 107.396 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
Luminosity [rel. to Run-4] |
||||
| PHENIX |
0.85 |
3270 |
2.6× |
||||
| STAR |
0.85 |
3100 |
2.6× |
||||
| MonoPole |
5.0 |
610 |
— | experimental
test apparatus
at IP2 |
|||
| IP10 |
5.0 |
270 |
— | test of
LHC luminostiy monitor at IP10 |
|||
| Time in
store: 48% |
|||||||
| Run-6 CY2005/06 FY2006 |
Retreat
at end of Run-6, 07/10/2006 - 07/12/2006, Shelter Island [Retreat
web site] [Summary] |
||||||
| Mode 1D: polarized p on polarized p at 250.0 GeV particle energy [Run-6 p-p web site] | |||||||
| Summary paper: V. Ptitsyn, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, A. Bravar, J.M. Brennan, K.A. Brown, D. Bruno, G. Bunce, P. Cameron, R. Connolly, J. DeLong, T. D'Ottavio, A. Drees, A.V. Fedotov, W. Fischer, G. Ganetis, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, D.A. Kayran, J. Kewisch, R.C. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, Y. Makdisi, G.J. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti, B. Oerter, F.C. Pilat, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, D. Trbojevic, N. Tsoupas, J. Tuozzolo, A. Zaltsman, A. Zelenski, K. Zeno. and S.Y. Zhang, "RHIC performance as polarized proton collider in Run-6", proceedings of the 2006 European Particle Accelerator Conference, Edinburgh (2006). | |||||||
| Beam
operation: 06/20/06 - 06/26/06 (6 days total, no physics operation) |
|||||||
| Run Coordinator: Mei Bai (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments: accelerated both beam to 250 GeV, 45% Blue beam
polarization at store (no colliding beams) |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 28 |
90 |
1.5 |
25 |
— | — | — | |
| Average
store polarization: 45% in Blue, zero in Yellow |
|||||||
| γ injection: 25.379 | γ store:
266.477 |
||||||
| Mode 1C: polarized p on
polarized p at 31.2 GeV
particle energy [Run-6 p-p
web site] |
|||||||
| Summary paper: V. Ptitsyn, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, A. Bravar, J.M. Brennan, K.A. Brown, D. Bruno, G. Bunce, P. Cameron, R. Connolly, J. DeLong, T. D'Ottavio, A. Drees, A.V. Fedotov, W. Fischer, G. Ganetis, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, D.A. Kayran, J. Kewisch, R.C. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, Y. Makdisi, G.J. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti, B. Oerter, F.C. Pilat, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, D. Trbojevic, N. Tsoupas, J. Tuozzolo, A. Zaltsman, A. Zelenski, K. Zeno. and S.Y. Zhang, "RHIC performance as polarized proton collider in Run-6", proceedings of the 2006 European Particle Accelerator Conference, Edinburgh (2006). | |||||||
| Beam
operation: 06/05/06 - 06/20/06 (15 days total, 12 days for physics) |
|||||||
| Run Coordinator: Vadim Ptitsyn (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: first use of spin rotators at low energy |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 111 |
90 |
3.0 |
20-30 |
2×1030 | 1×1030 | 0.22 |
|
| Average store polarization: 50% in Blue, 49% in Yellow | |||||||
| γ
injection: 25.379 |
γ store: 33.253 | ||||||
| Total
delivered integrated luminosities: |
|||||||
| Experiment | β*
[m] |
Luminosity [pb-1] |
|||||
| PHENIX |
3.0 |
0.380 |
vertical
and longitudinal polarization (about 50% each) |
||||
| STAR |
3.0 |
0.325 |
vertical polarization | ||||
| BRAHMS |
3.0 |
0.340 |
vertical
polarization |
||||
| Time in
store: 50% |
|||||||
| Mode 1B: p on p at 11.25 GeV particle energy [Run-6 p-p web site] | |||||||
| Summary paper: V. Ptitsyn, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, A. Bravar, J.M. Brennan, K.A. Brown, D. Bruno, G. Bunce, P. Cameron, R. Connolly, J. DeLong, T. D'Ottavio, A. Drees, A.V. Fedotov, W. Fischer, G. Ganetis, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, D.A. Kayran, J. Kewisch, R.C. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, Y. Makdisi, G.J. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti, B. Oerter, F.C. Pilat, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, D. Trbojevic, N. Tsoupas, J. Tuozzolo, A. Zaltsman, A. Zelenski, K. Zeno. and S.Y. Zhang, "RHIC performance as polarized proton collider in Run-6", proceedings of the 2006 European Particle Accelerator Conference, Edinburgh (2006). | |||||||
| Beam
operation: 06/05/06 - 06/06/06 (25 h total) |
|||||||
| Run
Coordinator: Todd Satogata |
|||||||
| Major
accomplishments and events: first injection, storage and collision of
beams with
rigidity of approximately half the normal injection rigidity |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 28 |
75 |
10 |
30 |
1.7×1028 | 0.6×1028 | -- |
|
| Average
store
polarization: 41% in Blue, 32% in Yellow |
|||||||
| γ
injection: 11.99 |
γ store:
11.99 |
||||||
| Time in
store: (test for low energy ion collisions) |
|||||||
| Mode 1A: polarized p on
polarized p at 100.0 GeV
particle energy [Run-6 p-p
web site] |
|||||||
| Summary
paper: V. Ptitsyn, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, A.
Bravar, J.M. Brennan, K.A. Brown, D. Bruno, G. Bunce, P. Cameron, R.
Connolly, J. DeLong, T. D'Ottavio, A. Drees, A.V. Fedotov, W. Fischer,
G. Ganetis, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, D.A. Kayran,
J. Kewisch, R.C. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, Y. Makdisi,
G.J. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti,
B. Oerter, F.C. Pilat, T. Roser, T. Russo, J. Sandberg, T. Satogata, C.
Schultheiss, S. Tepikian, D. Trbojevic, N. Tsoupas, J. Tuozzolo, A.
Zaltsman, A. Zelenski, K. Zeno. and S.Y. Zhang, "RHIC
performance as polarized proton collider in Run-6",
proceedings of the 2006 European Particle Accelerator Conference,
Edinburgh (2006). |
|||||||
| Beam
operation: 02/07/06 - 06/05/06 (119 days total, 92 days for
physics) |
|||||||
| Run Coordinator: Vadim Ptitsyn (AGS coordinator: Haixin Huang) | |||||||
| Major
accomplishments and events: total of 430 m of NEG coated beam pipes
installed in
warm
regions, pre-pumping in arcs lowered pressure to 10-6 - 10-7
Torr before cool-down, complete vertical re-alignment of both RHIC
rings, STAR shielding
installed, lowered injection energy to allow for better spin matching
with the AGS cold snake, first operational use of the AGS cold snake,
cool-down from 80 K to 4 K in 11 days (3 days less than planned), use
of
combined tune and coupling feedback for ramp development Major disruption: machine was off for one week following an arc flash incident in a switch of the STAR magnet electrical system |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 111 |
135 |
1.0 |
18-23 |
28×1030 | 18×1030 |
6.5 |
|
| Average
store polarization: 52% in Blue, 57% in Yellow (final H-jet
measurements) |
|||||||
| γ injection: 25.379 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [pb-1] |
Luminosity [rel. to Run-5] |
||||
| PHENIX | 1.0 |
43.6 |
3.6× |
hor.
and long. polarization recorded number of 45.9 pb-1 reduced by 5% after Run-8 to account for singel accidentals |
|||
| STAR | 1.0 |
44.9 |
3.7× |
hor.
and long. polarization ecorded number of 47.3 pb-1 reduced by 5% after Run-8 to account for singel accidentals |
|||
| BRAHMS |
10.0 |
0.1 |
ver.
polarization, for Mode 1B preparation |
||||
| Time in
store: 46% (50% excluding 1 week of downtime due to an arc flash
incident) |
|||||||
| Run-5 CY2004/05 FY2005 |
Retreat at end of Run-5, 06/15/2005 - 06/17/2005, Shelter Island [Retreat web site] [Summary] | ||||||
| Mode 2B: polarized p on polarized p at 204.9 GeV particle energy [Run-5 p-p web site] | |||||||
| Summary
paper: M. Bai, T. Roser, L. Ahrens, I. G. Alekseev, J. Alessi, J.
Beebe-Wang, M. Blaskiewicz, A. Bravar, J. M. Brennan, D. Bruno, G.
Bunce, E. Courant, A. Drees, W. Fischer, C. Gardner, R. Gill, J. Glenn,
W. Haeberli, H. Huang, O. Jinnouchi, J. Kewisch, A. Luccio, Y. Luo, I.
Nakagawa, H. Okada, F. Pilat, W. W. MacKay, Y. Makdisi, C. Montag, V.
Ptitsyn, T. Satgata, E. Stephenson, D. Svirida, S. Tepikian, D.
Trbojevic, N. Tsoupas, T. Wise, A. Zelenski, K. Zeno, and S. Y. Zhang, "Polarized
proton collisions at 205 GeV at RHIC", Phys. Rev. Lett. 96, 174801
(2006). |
|||||||
| Beam
operation: 05/31/05 - 06/03/05 (4 days total, 2 stores for physics -
primarily for PHOBOS) |
|||||||
| Run Coordinator: Mei Bai | |||||||
| Major
accomplishments and events: ramp setup for higher energy in 3 days,
first
acceleration and storage of polarized protons
beyond 100 GeV |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 56 |
60 |
2.0 |
25-50 |
3×1030 | 1.5×1030 | 0.5 |
|
| Average
store polarization: 30% |
|||||||
| γ injection: 25.936 | γ store: 218.368 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [pb-1] |
|||||
| PHENIX | 2.0 |
0.05 |
|||||
| STAR | 2.0 |
0.05 |
|||||
| PHOBOS | 10.0 |
0.01 |
|||||
| Time in
store: (only 2 consecutive stores) |
|||||||
| Mode 2A: polarized p on polarized p at 100.0 GeV particle energy [Run-5 p-p web site] | |||||||
| Summary
paper: M. Bai, L. Ahrens, J. Alessi, J. Beebe-Wang, M. Blaskiewicz, A.
Bravar, J.M. Brennan, D. Bruno, G. Bunce, J. Butler, P. Cameron, R.
Connolly, J. DeLong, T. D'Ottavio, A. Drees, W. Fischer, G. Ganetis,
C.J. Gardner, J. Glenn, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia,
U. Iriso, J.S. Laster, R.C. Lee, A.U. Luccio, Y. Luo, W.W. MacKay, Y.
Makdisi, G.J. Marr, A. Marusic, G. McIntyre, R. Michnoff, C. Montag, J.
Morris, T. Nicoletti, P. Oddo, J. Osamu, F.C. Pilat, V. Ptitsyn, T.
Roser, T. Satogata, K. Smith, S. Tepikian, R. Tomas, D. Trbojevic, N.
Tsoupas, J. Tuozzolo, K. Vetter, M. Wilinski, A. Zaltsman, A. Zelenski,
K. Zeno, S.Y. Zhang, I.G. Alekseev, and D. Svirida, "Polarized
proton collisions at RHIC", proceedings of the 2005 Particle
Accelerator Conference, Knoxville, Tennessee (2005). |
|||||||
| Beam
operation: 03/25/05 - 06/24/05 (66 days for physics, excluding 05/31/05
-
06/03/05 for Mode 2B) |
|||||||
| Run
Coordinator: Mei Bai (AGS coordinator: Haixin Huang) |
|||||||
| Major
accomplishments and events: polarized source upgraded with new
superconducting
solenoid, 60% polarization at AGS extraction, first acceleration of
polarized protons in AGS with cold snake (1011 protons per
bunch, 50% polarization at AGS extraction) - not yet used for physics,
3 weeks of set-up and ramp-up, operation with up to 111 bunches per
ring, increased store polarization by 5%, more calibration data with
H-jet, 56% of calendar time in store |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 106 |
90 |
1.0 |
30-35 |
10×1030 | 7×1030 | 1.9 |
|
| Average store polarization: 49% in Blue, 45%
in Yellow (final H-Jet measurements) |
|||||||
| γ
injection: 25.936 |
γ store:
106.597 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β*
[m] |
Luminosity [pb-1]* |
|||||
| PHENIX | 1.0 |
12.6
(0.65) |
|||||
| STAR |
1.0 |
12.7
(0.66) |
|||||
| BRAHMS |
3.0 |
4.2 (0.19) |
|||||
| *Amount
in brackets denotes delivered luminosity with vertical polarization,
the remainder was delivered with longitudinal polarization. |
|||||||
| Time in store: 56% of calendar time (run average for physics operation) | |||||||
| Mode 1C: Cu29+ on Cu29+ at 11.2 GeV/nucleon particle energy [Run-5 Cu-Cu web site] | |||||||
| Summary paper: F. Pilat, L. Ahrens, M. Bai, D.S. Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, D. Bruno, P. Cameron, R. Connolly, J. DeLong, T. D'Otavio, A. Drees, W. Fischer, G. Ganetis, C. Gardner, J. Glenn, P. Harvey, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, U. Iriso, R. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, G. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, A. Nicoletti, B. Oerter, V. Ptitsyn, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, R. Tomas, D. Trbojevic, N. Tsoupas, J. Tuozzolo, K. Vetter, A. Zaltsman, K. Zeno, S.Y. Zhang, W. Zhang, "Operations and performance of RHIC as a Cu-Cu collider", proceedings of the 2005 Particle Accelerator Conference, Knoxville, Tennessee (2005). | |||||||
| Beam
operation: 03/22/05 - 03/24/05 (42 hours total, 39 hours for physics) |
|||||||
| Run Coordinator: Fulvia Pilat | |||||||
| Major accomplishments and events: 82% of calendar time in store (at reduced bunch intensity, large emittance, and luminosity lifetime of about 0.5h) | |||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [nb-1] |
|
| 56 |
3.8 |
3.0 |
50-50 |
2.5×1026
|
0.5×1026
|
0.02 |
|
| γ injection: 12.075 | γ store: 12.075 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [nb-1] |
|||||
| PHENIX | 3.0 |
0.006 |
|||||
| STAR | 3.0 |
0.006 |
|||||
| BRAHMS | 3.0 |
0.002 |
|||||
| PHOBOS | 3.0 |
0.004 |
|||||
| Time in store: 82% of calendar time (run average for physics operation) | |||||||
| Mode 1B: Cu29+ on Cu29+ at 31.2 GeV/nucleon particle energy [Run-5 Cu-Cu web site] | |||||||
| Summary paper: F. Pilat, L. Ahrens, M. Bai, D.S. Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, D. Bruno, P. Cameron, R. Connolly, J. DeLong, T. D'Otavio, A. Drees, W. Fischer, G. Ganetis, C. Gardner, J. Glenn, P. Harvey, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, U. Iriso, R. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, G. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, A. Nicoletti, B. Oerter, V. Ptitsyn, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, R. Tomas, D. Trbojevic, N. Tsoupas, J. Tuozzolo, K. Vetter, A. Zaltsman, K. Zeno, S.Y. Zhang, W. Zhang, "Operations and performance of RHIC as a Cu-Cu collider", proceedings of the 2005 Particle Accelerator Conference, Knoxville, Tennessee (2005). | |||||||
| Beam
operation: 03/07/05 - 03/22/05 (15 days total, 12 days for physics) |
|||||||
| Run Coordinator: Fulvia Pilat | |||||||
| Major accomplishments and events: 74% of calendar time in store (at reduced bunch intensity) | |||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [nb-1] |
|
| 42 |
3.1 |
3.0 |
15-30 |
0.10×1028 | 0.08×1028 | 0.28 |
|
| γ injection: 12.075 | γ store:
33.540 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [nb-1] |
|||||
| PHENIX | 3.0 |
0.52 |
|||||
| STAR | 3.0 |
0.47 |
|||||
| BRAHMS | 5.0 |
0.30 |
|||||
| PHOBOS | 5.0 |
0.25 |
|||||
| Time in store: 74% of calendar time (run average for physics operation) | |||||||
| Mode 1A: Cu29+
on Cu29+ at
100.0 GeV/nucleon particle energy [Run-5
Cu-Cu
web site] |
|||||||
| Summary paper: F. Pilat, L. Ahrens, M. Bai, D.S. Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, D. Bruno, P. Cameron, R. Connolly, J. DeLong, T. D'Otavio, A. Drees, W. Fischer, G. Ganetis, C. Gardner, J. Glenn, P. Harvey, T. Hayes, H.-C. Hseuh, H. Huang, P. Ingrassia, U. Iriso, R. Lee, V.N. Litvinenko, Y. Luo, W.W. MacKay, G. Marr, A. Marusic, R. Michnoff, C. Montag, J. Morris, A. Nicoletti, B. Oerter, V. Ptitsyn, T. Roser, T. Russo, J. Sandberg, T. Satogata, C. Schultheiss, S. Tepikian, R. Tomas, D. Trbojevic, N. Tsoupas, J. Tuozzolo, K. Vetter, A. Zaltsman, K. Zeno, S.Y. Zhang, W. Zhang, "Operations and performance of RHIC as a Cu-Cu collider", proceedings of the 2005 Particle Accelerator Conference, Knoxville, Tennessee (2005). | |||||||
| Beam
operation: 11/23/04 - 03/07/05 (104 days total, 55 days for physics) |
|||||||
| Run
Coordinator: Fulvia Pilat |
|||||||
| Major accomplishments and events: 252 m of NEG coated beam pipes installed in warm regions, start-up/ramp-up in 2.5 weeks (1.5 weeks less than planned, excluding 4 weeks repair of bus shorts in Yellow ring), injectors delivered enough bunch intensity to run at beam-beam limit with 4 experiments, β* reduced to 0.9m at STAR | |||||||
| Achieved beam parameters (PHENIX/STAR): | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [nb-1] |
|
| 37/35 |
4.5 |
1.0/0.9 |
15-30 |
2×1028 | 0.8×1028 | 2.4 |
|
| γ
injection: 12.075 |
γ store:
107.502 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [nb-1] |
|||||
| PHENIX | 1.0 |
15.2 |
|||||
| STAR | 0.9 |
15.0 |
|||||
| BRAHMS | 2.5 |
6.2 |
|||||
| PHOBOS | 2.5 |
5.7 |
|||||
| Time in store: 52% of calendar time (run average for physics operation) | |||||||
| Run-4 CY2003/04 FY2004 |
Retreat
after Run-4, 07/07/2004 - 07/08/2004, Port Jefferson [Retreat
web site] |
||||||
| Mode 2: polarized p on
polarized p at 100.0 GeV
particle energy [Run-4 p-p web
site] (development run, not primarily for physics) |
|||||||
| Summary
paper: M. Bai, R. Tomas, L. Ahrens, K. Brown, A. Drees, C.J. Gardner,
J.W. Glenn, W. Fischer, U. Iriso, H. Huang, Y. Luo, F. Pilat, W.W.
MacKay, G. Marr, C. Montag, V. Ptitsyn, R. Roser, T. Satogata, S.
Tepikian, N. Tsoupas, J. van Zeijts, "RHIC
polarized proton new working point commissioning", submitted to
the proceedings of 16th
International Spin Physics Symposium, Trieste, Italy (2004). |
|||||||
| Beam operation: 04/02/2004 - 05/15/2004 (43 days total) | |||||||
| Run
Coordinator: Mei Bai (AGS coordinator: Haixin Huang) |
|||||||
| Major
accomplishments and events: new AGS warm snake increases AGS
polarization by 20%,
maximum polarization
from AGS 50% (consistently 45%), maximum polarization in RHIC at store
45% (consistently 40%), polarized H-jet commissioned and operated for
calibration of RHIC proton-Carbon polarimeters, peak luminosity in
excess of
1031cm-2s-1 at 2 experiments and no
polarization, repeated stores with
40% average polarization and 4·1030cm-2s-1
average luminosity at 4 experiments, new working point (0.69,0.68)
commissioned |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 56 |
70 |
1.0 |
20 |
6×1030 | 4×1030 | 0.9 |
|
| Average store polarization: 46% in Blue and
Yellow |
|||||||
| γ injection: 25.936 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β*
[m] |
Luminosity [pb-1] |
|||||
| PHENIX | 1.0 |
3.0 |
|||||
| STAR | 1.0 |
3.2 |
|||||
| BRAHMS | 3.0 |
0.3 |
|||||
| PHOBOS | 3.0 |
0.6 |
|||||
| Time in
store: (no continuous physics operation) |
|||||||
| Mode 1B: Au79+
on Au79+ at 31.2 GeV/nucleon particle energy [Run-4 Au-Au
web site] |
|||||||
| Summary paper: W. Fischer, L. Ahrens, J. Alessi, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, D. Bruno, J. Butler, R. Calaga, P. Cameron, R. Connolly, J. Delong, T. D'Ottavio, A. Drees, W. Fu, G. Ganetis, W. Glenn, T. Hayes, P. He, H. Huang, H.C. Hseuh, P. Ingrassia, U. Iriso, R. Lee, Y. Luo, G. Marr, W.W. MacKay, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti, B. Oerter, S. Peggs, A. Pendzick, C. Pearson, F. Pilat, V. Ptitsyn, T. Roser, J. Sandberg, T. Satogata, C. Schultheiss, A. Sidi-Yekhlef, L. Smart, S. Tepikian, R. Tomas, N. Tsoupas, D. Trbojevic, J. Tuozzolo, K. Vetter, K. Yip, A. Zaltsman, A. Zhang, S.Y. Zhang, J. van Zeijts, and the RHIC Operations Team "Luminosity increases in gold-gold operation in RHIC", proceedings of the 2004 European Particle Accelerator Conference, Lucerne (2004). | |||||||
| Beam
operation: 03/24/2004 - 04/02/2004 (9 days total, 9 days for
physics) |
|||||||
| Run
Coordinator: Wolfram Fischer |
|||||||
| Major
accomplishments and events: set-up in less than 2 days (largely during
Mode 1A),
65% of calendar time in
store |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 45 |
1.0 |
3.0 |
15-30 |
1.2×1026 | 0.6×1026 | 20 |
|
| γ
injection: 10.520 |
γ store:
33.508 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment |
β* [m] |
Luminosity [μb-1] |
|||||
| PHENIX | 3.0 |
21.8 | |||||
| STAR | 3.0 |
20.7 | |||||
| BRAHMS | 5.0 |
12.2 | |||||
| PHOBOS | 5.0 |
12.3 | |||||
| Time in
store: 65% of calendar time (run average for physics operation) |
|||||||
| Mode 1A: Au79+
on Au79+ at 100.0 GeV/nucleon particle energy [Run-4 Au-Au web site] |
|||||||
| Summary paper: W. Fischer, L. Ahrens, J. Alessi, M. Bai, D. Barton, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, D. Bruno, J. Butler, R. Calaga, P. Cameron, R. Connolly, J. Delong, T. D'Ottavio, A. Drees, W. Fu, G. Ganetis, W. Glenn, T. Hayes, P. He, H. Huang, H.C. Hseuh, P. Ingrassia, U. Iriso, R. Lee, Y. Luo, G. Marr, W.W. MacKay, A. Marusic, R. Michnoff, C. Montag, J. Morris, T. Nicoletti, B. Oerter, S. Peggs, A. Pendzick, C. Pearson, F. Pilat, V. Ptitsyn, T. Roser, J. Sandberg, T. Satogata, C. Schultheiss, A. Sidi-Yekhlef, L. Smart, S. Tepikian, R. Tomas, N. Tsoupas, D. Trbojevic, J. Tuozzolo, K. Vetter, K. Yip, A. Zaltsman, A. Zhang, S.Y. Zhang, J. van Zeijts, and the RHIC Operations Team "Luminosity increases in gold-gold operation in RHIC", proceedings of the 2004 European Particle Accelerator Conference, Lucerne (2004). | |||||||
| Beam
operation: 11/26/2003 - 03/24/2004 (118 days total, 84 days for physics) |
|||||||
| Run
Coordinator: Wolfram Fischer |
|||||||
| Major
accomplishments and events: start-up/ramp-up in 4 weeks (1 less than
planned),
consistently high bunch intensity (>109 Au ions)
delivered by injectors, 53% of calendar time in store, reliable and
almost complete rebucketing, first use of secondary collimators,
luminosity steering and collimator setting
time reduced to 10min, orbit correction after each ramp, dedicated
Landau cavities, 2-stage collimation, PHENIX shielding installed, 57 m
of NEG coated beam pipes and 64m of solenoids installed |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 45 |
1.1 |
1.0 |
15-40 |
15×1026 |
5×1026 | 160 |
|
| γ injection: 10.520 | γ store:
107.396 |
||||||
| Total
delivered integrated luminosities: |
|||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
Luminosity [rel. to Run-2] |
||||
| PHENIX |
1.0 |
1260 |
14× | Recorded number of 1370 μb-1reduced by 8% after Run-7 to account for single accidentals | |||
| STAR |
1.0 |
1170 | 20× | Recorded
number of 1270 μb-1reduced by 8% after Run-7 to account for
single accidentals |
|||
| BRAHMS |
3.0 |
560 | 13× | ||||
| PHOBOS |
3.0 |
540 | 7× | ||||
| Time in store: 53% of calendar time (run average for physics operation) | |||||||
| Run-3 CY2002/03 FY2003 |
Retreat after Run-3, 06/10/2003 - 06/12/2003, BNL [Retreat web site] | ||||||
| Mode 2: polarized p on polarized p at 100.0 GeV particle energy [Run-3 p-p web site] | |||||||
| Summary paper: H. Huang, L. Ahrens, J.G. Alessi, I. Alekseev, M. Bai, J. Beebe-Wang, S. Bravar, M. Brennan, K.A. Brown, G. Bunce, A. Drees, W. Fischer, C. Gardner, W. Glenn, G. Igo, O. Jinnochi, A.U. Luccio, W. MacKay, C. Montag, F. Pilat, V. Ptitsyn, T. Roser, T. Satogata, H. Spinka, D. Svirida, S. Tepikian, D. Trbojevic, N. Tsoupas, D. Underwood, J. van Zeijts, J. Wood, A. Zelenski, K. Zeno, and S.Y. Zhang, "Polarized proton acceleration at the Brookhaven AGS and RHIC", proceedings of the 2003 Particle Accelerator Conference, Portland, Oregon (2003). | |||||||
| Beam
operation: 03/26/2003 - 05/30/2003 (63 days total) |
|||||||
| Run
Coordinator: Haixin Huang |
|||||||
| Major
accomplishments and events: source polarization of 70-75%, AGS
polarization of
40%, longitudinal spin rotators commissioned for PHENIX and STAR,
Yellow ring polarization maintained with crippled snake |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 55 |
70 |
1.0 |
20 |
6×1030 | 4×1030 | 0.6 |
|
| Average store polarization: 39% in Blue, 30%
in Yellow |
|||||||
| γ injection: 25.936 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [pb-1] |
|||||
| PHENIX | 1.0 |
2.0 |
|||||
| STAR | 1.0 |
2.5 |
|||||
| BRAHMS | 3.0 |
0.6 |
|||||
| PHOBOS | 3.0 |
0.4 |
|||||
| pp2pp
(IR2) |
10.0 |
<
0.1 |
special run 05/19/2004 - 05/21/2004 | ||||
| Time in
store: 41% of calendar time (last 23 days of physics operation) |
|||||||
| Mode 1: d at 101.9 GeV/nucleon on Au79+ at 100.0 GeV/nucleon particle energy [Run-3 d-Au web site] | |||||||
| Summary article: T. Satogata, L. Ahrens, M. Bai, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, P. Cameron, J. Cardona, R. Connolly, A. Drees, W. Fischer, R.P. Fliller III, G. Ganetis, C. Gardner, J.W. Glenn, H. Hahn, T. Hayes, H. Huang, U. Iriso-Ariz, W.W. MacKay, A. Marusic, R. Michnoff, C. Montag, F. Pilat, V. Ptitsyn, T. Roser, K. Smith, S. Tepikian, and D. Trbojevic, "Commissioning of the RHIC deuteron-gold collisions", proceedings of the 2003 Particle Accelerator Conference, Portland, Oregon, BNL-69612-CP (2003). | |||||||
| Beam
operation: 12/03/2002 - 03/24/2003 (111 days total, 71 days for physics) |
|||||||
| Run
Coordinator: Todd Satogata |
|||||||
| Major
accomplishments and events: first asymmetric collisions, injection with
equal
revolution frequency (found strong effects from modulated beam-beam
interaction with injection with equal rigidity), first operation with
110 bunches (lead to unacceptable vacuum and subsequent background
problems), Landau cavity in Blue ring for deuterons (one of the storage
cavities), coherence monitor |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [nb-1] |
|
| 55 |
110d
/ 0.7Au |
2.0 |
13-25 |
7×1028 | 3×1028 | 4.6 |
|
| γ
injection: 11.663 (both beams) |
γ store:
107.396 (both beams) |
||||||
| Note:
Injection with same rigidity for both beams, and thus different
revolution frequencies, lead to unacceptable beam lifetime due to
modulated beam-beam interaction. |
|||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [nb-1] |
|||||
| PHENIX | 2.0 |
24.2 |
|||||
| STAR | 2.0 |
19.7 |
|||||
| BRAHMS | 2.0,
3.0 |
15.8 |
|||||
| PHOBOS | 2.0,
4.0, 3.0 |
13.4 |
|||||
| Time in
store: 32% of calendar time (last 27 days of physics operation) |
|||||||
| Run-2 CY2001/02 FY2001/02 |
Retreat after Run-2, 03/05/2002 - 03/07/2002, Montauk [Retreat web site] | ||||||
| Mode 2: polarized p on polarized p at 100.0 GeV particle energy [Run-2 web site] | |||||||
| Summary article: T. Roser, L. Ahrens, J. Alessi, M. Bai, J. Beebe-Wang, J.M. Brennan, K.A. Brown, G. Bunce, P. Cameron, E.D. Courant, A. Drees, W. Fischer, R. Fliller III, W. Glenn, H. Huang, A.U. Luccio, W.W. MacKay, Y. Makdisi, C. Montag, F. Pilat, V. Ptitsyn, T. Satogata, S. Tepikian, D. Trbojevic, N. Tsoupas, J. van Zeijts, A. Zelenski, K. Zeno, A. Deshpande, K. Kurita, K. Krueger, H. Spinka, D. Underwood, M. Syphers, I. Alekseev, D. Svirida, V. Ranjbar, J. Tojo, O. Jinnouchi, M. Okamura and N. Saito, "First polarized proton collisions at RHIC", Workshop on Increasing the AGS Polarization, University of Michigan (2002). | |||||||
| Beam
operation: 11/28/2001 - 01/25/2002 (58 days) |
|||||||
| Run
Coordinator: Waldo MacKay |
|||||||
| Major
accomplishments and events: all 4 Siberian snakes commissioned, first
ever
collisions of polarized proton beams |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [pb-1] |
|
| 55 |
70 |
3.0 |
25 |
2×1030 | 1×1030 | 0.3 |
|
| Average store polarization: 12% in Blue, 17%
in Yellow |
|||||||
| γ injection: 25.936 | γ store: 106.597 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [pb-1] |
|||||
| PHENIX | 3.0 |
0.35 |
|||||
| STAR | 3.0 |
0.47 |
|||||
| BRAHMS | 3.0 |
0.30 |
|||||
| PHOBOS | 3.0 |
0.30 |
|||||
| pp2pp |
10.0 |
<
0.001 |
special
run 01/24/2002 - 01/25/2002 (4 shifts) |
||||
| Time in store: 30% of calendar time (last 24 days of physics operation) | |||||||
| Mode 1B: Au79+ on Au79+ at 9.8 GeV/nucleon particle energy [Run-2 web site] | |||||||
| Beam
operation: 11/25/2001 - 11/26/2001 (3 shifts total, 2 shifts for
physics) |
|||||||
| Run
Coordinator: Todd Satogata |
|||||||
| Major
accomplishments and events: set-up of collisions at injection in 6
hours, average
refill times of less than 10 min |
|||||||
| Achieved
beam parameters: |
|||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 55 |
0.6 |
3.0 |
15 |
8×1024 | 2×1024 | 1 |
|
| γ
injection: 10.520 |
γ store:
10.520 |
||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
|||||
| PHENIX | 3.0 |
0.1 |
|||||
| STAR | 3.0 |
0.1 |
|||||
| BRAHMS | 3.0 |
0.1 |
|||||
| PHOBOS | 3.0 |
0.1 |
|||||
| Time in
store: (only hours of physics operation) |
|||||||
| Mode 1A: Au79+ on Au79+ at 100.0 GeV/nucleon particle energy [Run-2 web site] | |||||||
| Summary article: D. Trbojevic, L. Ahrens, M. Bai, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, P. Cameron, J. Cardona, R. Connolly, A. Drees, W. Fischer, R. Fliller III, G. Ganetis, W. Glenn, H. Hahn, T. Hayes, H. Huang, J. Kewisch, W.W. MacKay, A. Marusic, C. Montag, S. Peggs, F. Pilat, V. Ptitsyn, T. Roser, T. Satogata, K. Smith, S. Tepikian, N. Tsoupas, and J. van Zeijts, "Commissioning of RHIC at 100 GeV/nucleon", proceedings of the 2002 European Particle Accelerator Conference, Paris, BNL-69008 (2002). | |||||||
| Beam
operation: 05/24/2001 - 11/25/2001 (185 days total, 111 days for
physics) |
|||||||
| Run
Coordinator: Dejan Trbojevic |
|||||||
| Major
accomplishments and events: first Au-Au collisions at full energy,
luminosity
reached design value (2·1026cm-2s-1
average per store), γt-jump commissioned, octupoles for
transition crossing, β-squeeze along the energy ramp, β*
at PHENIX reduced to 1m, operated with 1.8mrad total crossing angle at
BRHAMS (later reduced to 0.9mrad), storage cavities commissioned, gap
cleaning
introduced, Landau cavities tested, electronic logbook introduced |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 55 |
0.6 |
1.0 |
15-40 |
4×1026 | 1.5×1026 | 24 |
|
| γ injection: 10.520 | γ store: 107.396 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
|||||
| PHENIX | 3.0,
2.0, 1.0 |
93 |
|||||
| STAR | 3.0,
2.0 |
59 |
|||||
| BRAHMS | 3.0,
2.0 |
44 |
|||||
| PHOBOS | 3.0,
2.0 |
62 |
|||||
| Time in store: 26% of calendar time (last 21 days of physics operation) | |||||||
| Run-1 CY2000 FY2000 |
Retreat after Run-1, 11/16/2000 - 11/17/2000, University at Stony Brook [Retreat web site] | ||||||
| Mode 2: polarized p at
24.3 GeV and 25.1 GeV particle energy [Run-1 web site] |
|||||||
| Summary article: W. MacKay, L. Ahrens, M. Bai, G. Bunce, E. Courant, A. Deshpande, A. Drees, W. Fischer, H. Huang, K. Kurita, A. Lehrach, A. Luccio, Y. Makdisi, F. Pilat, V. Ptitsyn, T. Roser, N. Saito, T. Satogata, S. Tepikian, D. Trbojevic, N. Tsoupas, J. van Zeijts, BNL; H. Spinka, D. Underwood ANL; D. Svirida, I. Alekseev, V. Kanavets ITEP, Moscow; B. Lozowski, V. Ranjbar, Indiana University; J. Tojo, K. Imai Kyoto University; D. Fields, University of New Mexico, "Commissioning and future plans for polarized protons in RHIC", proceedings of the 2001 Particle Accelerator Conference, Chicago, BNL-67938 (2001). | |||||||
| Beam
operation: 09/07/2000 - 09/19/2000 (12 days total) |
|||||||
| Run
Coordinator: Thomas Roser |
|||||||
| Major
accomplishments and events: one Siberian snake commissioned in Blue
ring,
proton-Carbon CNI polarimeters commissioned, polarized
beam stored and accelerated from Gγ = 46.5 to Gγ = 48, used working
point (0.11,0.13) |
|||||||
| γ injection: 25.936 | |||||||
| Mode 1B: Au79+ on Au79+ at 65.2 GeV/nucleon particle energy [Run-1 web site] | |||||||
| Summary article: D. Trbojevic, L. Ahrens, M. Blaskiewicz, M. Brennan, M. Bai, P. Cameron, J. Cardona, R. Connolly, J. DeLong, A. Drees, R.P. Fliller, W. Fischer, G. Ganetis, W. Glenn, H. Hahn, T. Hayes, A. Lehrach, W. MacKay, J. Kewisch, S. Peggs, V. Ptitsyn, T. Roser, T. Satogata, T. Shea, K. Smith. S. Tepikian, N. Tsoupas, and J. van Zeijts, "Commissioning of the Relativistic Heavy Ion Collider", proceedings of the 2001 Particle Accelerator Conference, Chicago, BNL-67969 (2001). | |||||||
| Beam
operation: 06/13/2000 - 09/02/2000 (81 days total, 37 days for physics) |
|||||||
| Run
Coordinator: Thomas Roser |
|||||||
| Major
accomplishments and events: first collisions at higher energies, first
use of
collimators |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 56 |
0.5 |
3.0 |
15 |
3×1025 | 1.7×1025 | 4 |
|
| γ
injection: 10.250 (not a typo) |
γ store: 70.000 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
|||||
| PHENIX |
3.0 |
7 |
|||||
| STAR | 8.0 |
3 |
|||||
| BRAHMS | 3.0 |
7 |
|||||
| PHOBOS | 8.0 |
3 |
|||||
| Mode 1A: Au79+ on Au79+ at 27.9 GeV/nucleon particle energy [Run-1 web site] | |||||||
| Beam
operation: 03/20/2000 - 06/13/2000 (86 days total, last 3 shifts for
physics) |
|||||||
| Run Coordinator: Thomas Roser | |||||||
| Major
accomplishments and events: first acceleration of both beams,
transition crossing
with fast radial change, first collisions of gold beams |
|||||||
| Achieved beam parameters: | |||||||
| no
of bunches |
ions/bunch [109] |
β* [m] |
emittance [μm] |
Lpeak [cm-2s-1] |
Lstore
avg [cm-2s-1] |
Lweek [μb-1] |
|
| 6 |
0.1 |
3.0 |
15 |
0.001 |
<0.001 |
0.003 |
|
| γ
injection: 10.250 (not a typo) |
γ store: 30.000 | ||||||
| Total delivered integrated luminosities: | |||||||
| Experiment | β* [m] |
Luminosity [μb-1] |
|||||
| PHENIX | 3.0 |
<0.001 |
|||||
| STAR | 3.0 |
<0.001 |
|||||
| BRAHMS | 3.0 |
<0.001 |
|||||
| PHOBOS | 3.0 |
<0.001 |
|||||
| Run-0 CY1999 FY1999 |
Retreat after Run-0, 09/16/2000 - 09/17/2000, University at Stony Brook [Retreat web site] | ||||||
| Au79+ at 11.3 GeV/nucleon particle energy [Run-0 web site] | |||||||
| Beam
operation: 06/07/1999 - 08/16/1999 (70 days total) |
|||||||
| Run
Coordinator: Steve Peggs |
|||||||
| Major
accomplishments and events: beam stored in Blue ring for 45 min, beam
stored in
Yellow ring for thousands of turns, beam accelerated in Blue ring by 1
GeV/nucleon |
|||||||
| γ injection: 12.09 | |||||||
| Sextant Test CY1997/98 FY1997 |
Au79+ at 11.3 GeV/nucleon particle energy [Sextant Test web site] |
||||||
| Summary
paper: J. Wei, W. Fischer, L. Ahrens, J. M. Brennan, K. Brown, R.
Connolly, G.
F. Dell, M. Harrison, J. Kewisch, W. W. MacKay, V. Mane, S. Peggs, F.
Pilat,
T. Satogata, S. Tepikian, P. Thompson, C. G. Trahern, D. Trbojevic, N.
Tsoupas, "RHIC
sextant test - physics and performance",
proceedings of the 1997 Particle Accelerator Conference, Vancouver,
BNL-63918
(1997). F. Pilat, L. Ahrens, K. Brown, R Connolly, G.F. Dell, W. Fischer, J. Kewisch, W. MacKay, V. Mane, S. Peggs, T. Satogata, S. Tepikian, P. Thompson, D. Trbojevic, N. Tsoupas, J. Wei, "RHIC sextant test - accelerator systems and performance", proceedings of the 1997 Particle Accelerator Conference, Vancouver, BNL-63916 (1997). |
|||||||
| Beam
operation: 12/09/1997 - 02/02/1998 (55 days total) |
|||||||
| Test
Coordinator: Steve Peggs |
|||||||
| Major accomplishments and events: transported Yellow beam to end of sector 4 arc, tested instrumentation, measured beam and line properties | |||||||
| γ
injection: 12.15 |
|||||||
| AtR
Test CY1995 FY1995 |
Au79+ at 11.7 GeV/nucleon particle energy [AtR Test web site] |
||||||
| Summary paper: W.W. MacKay, L. Ahrens, M. Brennan, K. Brown. T. Clifford, R. Connolly, F. Dell, D.P. Deng, L. Hoff, J. Kewisch, G. Kaldonado, B. Martin, R. Olsen, S. Peggs, F. Pilat, T. Robinson, S. Sathe, T. Satogata, D. Shea, T.J. Shea, M. Tanaka, P. Thompson, S. Tepikian, C.G. Trahern, D. Trbojevic, N. Tsoupas, J. Wei, R. Witkover, P. Zhou, "AGS to RHIC transfer line - design and commissioning", proceedings of the 1996 European Particle Accelerator Conference, Sitges, Spain (1996). | |||||||
| Beam operation: 11/06/1995 - 12/19/1995 (43 days total) | |||||||
| Test
Coordinator: Waldo MacKay |
|||||||
| Major
accomplishments and events: transported beam to W-dump, tested
instrumentation,
measured beam and line properties |
|||||||
| γ
injection: 12.6 |
|||||||