SYSTEM PICTURE GALLERY

March 13 @ 1020

DISPLACEMENT OF POST DURING TEMPERATURE CYCLES OF YELLOW RING.
Dependence of post displacement in yo5-du3 on recooler temperature yo5-q6-tio.

  • black: initial cooldown (296K to 4.5K, Jan 20 - 22),
  • red: warmup (4.5K to 296K, Feb 27 - 28),
  • green: cooldown (296K to 4.5K, Feb 28 - Mar 2),
  • blue: warmup (4.5K to 276K, Mar 5-10),
  • orange: cooldown (276K to 227K, Mar 10-13).

    February 02 @ 0759

    RECOOLER TEMPERATURES: Recoolers are heat exchangers between primary and secondary helium circuits. As the low temperature wave front moves from the 6 o'clock end of the Sextant (where the refrigerator is located) towards the 4 o'clock end, successive recoolers drop in temperature. The horizontal lines at 4 and 9 degrees Kelvin indicate the temperature range necessary for injection.

    February 25 @ 1215

    RECOOLER TEMPERATURES IN YELLOW RING: Feb 1 through Feb 23, 1997.

    February 10 @ 1030

    THERMAL CYCLES FOR SEXTANT OF YELLOW RING.

  • red: warmup (4.5K to 296K, Feb 27 - 28),
  • blue: cooldown (296K to 4.5K, Feb 28 - Mar 2),
  • green: warmup (4.5K to 296K, Mar 5-10)

    March 13 @ 1025

    TEMPERATURE DEPENDENCE OF POST DISPLACEMENTS:

  • black: yo5-du3 during initial rapid cooldown, Jan 20-22, 1997 (296K > yo5-q6-tio > 4.5 K).
  • red: bi5-du3 during initial slow cooldown, Jan 20 - Feb 24, 1997 (296K > bi5-q6-tio > 190K).
  • blue: bi5-du3 during warmup Mar 5-13, 1997 (195K < bi5-q6-tio < 242K).

    February 25 @ 1215

    RECOOLER TEMPERATURES IN BLUE RING: Feb 1 through Feb 23, 1997.

    March 10, 1997 @ 1015

    RECOOLER TEMPERATURES IN BLUE RING: Feb 26 - Mar 10, 1997.

    February 25 @ 1215

    FRONT END COMPUTER TEMPERATURES - WITH CORRELATIONS. FEC: 7, 10, and 13 located in Building 1000P. Measured Jan. 30 - Feb. 4, 1997.

    February 25 @ 1215

    FRONT END COMPUTER TEMPERATURES - WITH CORRELATIONS. FEC: 4, 5, 18, and 133 located in Building 1004B. Measured Jan. 30 - Feb. 4, 1997.

    February 25 @ 1215

    FRONT END COMPUTER TEMPERATURES - NO CORRELATION. FEC's: 9, 10, 124, 125, 130, 131, 134, & 135. Measured Jan. 30 - Feb. 4, 1997.

    February 02 @ 0824

    INSULATING VACUUM PRESSURES: The insulation vacuum is read by cold cathode gauges distributed from 4 o'clock to 6 o'clock within the sextant.

    February 02 @ 0819

    BEAM VACUUM PRESSURES: The beam vacuum is read by cold cathode gauges distributed from 4 o'clock to 6 o'clock within the sextant.

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