The Relativistic Heavy Ion Collider Run-18
 
100 GeV/nucleon Ru+Ru, Zr+Zr; 13.5 GeV/nucleon Au+Au Operation

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[Daily Meeting Information]

 


E
GeV/nucleon
100
13.5
Lpeak
1026cm-2s-1


Lavg
1026cm-2s-1

Lweek
μb-1/week

[as of 12/11/2017]
Logs
[Elogs]  [Zr/Ru Elog]  [OC Elog]  [Dry Run]
References
[RHIC Runs overview]  [Run-18 Parameters (Gardner)]  [low-energy Gold Parameters ]  [Controls]  [Operations]

Mode 1/2: 100 GeV/nucleon Ru+Ru/Zr+Zr

Start-Up Plan 100 GeV/nucleon

Machine Parameters
No of bunches 111
Ions/bunch TBDx109
Blue Ramp WP
28.229 // 29.215
Yellow Ramp WP
28.229 // 29.215
Blue Store WP
28.229 // 29.215
Yellow Store WP
28.229 // 29.215
initial beta* for collisions 0.70 m @ IP6
beta* for IP2
5 m
beta* for IP4 & IP10 free

  

Mode 3: 26.5 GeV/nucleon Au+Au CeC PoP

Mode 4: 13.5 GeV/nucleon Au+Au

  Machine Parameters
No of bunches 111
Ions/bunch 1.5x109
Harmonic number 360
beta* for IP2 5 m
beta* for collisions 3 m @ IP6


Mode 5: 3.85 GeV/nucleon Au fixed target

  Machine Parameters
No of bunches 111
Ions/bunch 1x109
Harmonic number 120
beta* for collisions 6 m @ IP6


RHIC Run Coordinator Operations: Gregory Marr gmarr@bnl.gov 631-344-7810 (office)

Vincent Schoefer schoefer@bnl.gov 631-344-8453 (office)

Travis Shrey shrey@bnl.gov 631-344-7451 (office)
Scheduling Physicist: Bill Christie christie@bnl.gov 631-344-7137(office)
AGS liaison: Haixin Huang huanghai@bnl.gov 631-344-5446 (office)

Achieved parameters at Medium/Low energy Au-Au runs:

 
units
Run-1 Run-2
Run-4
Run-10
Run-10
Run-10
Run-10
Run-11 Run-11 Run-14 Run-17
Energy GeV
65.2 9.8
31.2
31.2
19.5
5.75
3.85
9.8 13.5 7.3
27.2
No of bunches ...
56 55
45
111
111
111
111
111 111 111
111
Ions/bunch 109
0.5 0.6
1.0
1.2
1.3
1.1
0.5
0.9 1.45 1.1
1.65
β* (IP6, IP8)
m
3.0 3.0
3.0
2.5
3.0
6.0
6.0
2.5, 3.0 3.0 3.5
2.0
Peak luminosity 1026cm-2s-1 0.3 0.08
1.2
4.5
2.2
0.2
0.1
0.8 2.0 1.0
10.0
Avg. store luminosity 1026cm-2s-1 0.17 0.02
0.6
3.0
1.3
0.1
0.05
0.4 1.2 0.2
4.9
Luminosity per week  μb-1/week 4 1
20
110
50
3.3
0.55
15 30 8.1
195
Run length weeks (physics) 5.3 0.1 1.3 2.9 1.9 1.1 4.6 1.4 1.1 3.4
2.6
Time in store % of calendar time

65
68
 82?
 77
 55
71 64 57
68