! $Id: 4762,v 4.1 1994/07/27 14:42:31 pepsa Exp $ coverpage: title_1: FOS PRESSURE MEASUREMENT sci_cat: SMOV proposal_for: SME/FOS pi_fname: JOHN pi_mi: E. pi_lname: FITCH pi_inst: STSCI pi_country: USA pi_phone: 410-338-4493 keywords_1: SMOV,PRESSURE hours_par: 5.00 fos: Y pi_position: FOS ENGINEER ! end of coverpage abstract: line_1: This test is designed to perform a check of the line_2: FOS aft shroud pressure after the completion of line_3: the shuttle portion of the 1993 Servicing mission, line_4: and prior to the initial re-activation of either line_5: the FOS Red or Blue detector HV. This test is to line_6: run with the FOS in LVON mode first on the Blue line_7: side and then on the Red side. The ion-gauge will line_8: be turned on for a minimum of 2.5 hours on each line_9: side until an internal pressure of 1E-5 Torr or line_10: less is reached for 12 hours or more. This proposal line_11: requires the FOS to have been properly configured line_12: to HOLD mode prior to execution of this proposal. ! ! end of abstract general_form_proposers: lname: FITCH fname: JOHN mi: E. inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: In order to safely operate the FOS high voltage, it is line_2: necessary to ensure that the FOS internal pressure is line_3: sufficiently low to prevent high voltage coronal discharge. line_4: Such discharge could destroy the FOS detectors. line_5: Taking FOS pressure measurements with the FOS ION-GUAGE line_6: allows the engineers to safely predict when this pressure line_7: constraint will be met. ! question: 3 section: 1 line_1: During each 12 hour period, the FOS low voltage and line_2: ION-GUAGE will be turned on for at least 150 minutes to line_3: collect pressure information (telemetry point Y338). line_4: As a precaution against failures, the ION-GUAGE will be line_5: operated using both sides (Blue and then Red) within the line_6: 12 hour period. The observations will be spaced apart line_7: so if both are successful, the engineers will be able to line_8: identify any trends and more easily predict when the line_9: pressure criteria will be satisfied. To minimize the line_10: transitions within the FOS hardware, the proposal calls line_11: for the ION-GUAGE to be turned on just prior to the line_13: 150 minutes of data collection and turned off just after. ! question: 5 section: 1 line_1: This proposal must be sheduled after the FOS has been successfully line_2: returned to the HOLD mode (via proposal 4761) from the shuttle line_3: portion of the servicing mission. Further lines 11-16 must line_4: be repeated every 12 hours until all of the pressure criteria line_5: using the FOS ION-GUAGE have been satisfied. (These repeats line_6: are done in logsheet lines 21-26, 31-36, etc.) line_7: No other FOS activities may be scheduled between lines line_8: 11 and 13 and lines 14 and 16 (or their analogs). FOS activities, for line_9: which the pressure requirements have been satisfied, may be scheduled between line_10: lines 13 and 14 and between 16 and 21 (and their analogs). The point in time, line_11: at which each of the pressure criteria using the FOS ION-GUAGE are satisfied, line_12: will be defined by the FOS engineer as part of the analysis of the data from line_13: this proposal. ! !end of general form text general_form_address: lname: FITCH fname: JOHN mi: E. category: PI inst: STSCI addr_1: SESD/ESB addr_2: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 410-338-4493 ! ! end of general_form_address records ! No fixed target records found ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 11.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: CYCLE 3 / 11-126; comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 11 AND 13. ! linenum: 13.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 14.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 14 AND 16. ! linenum: 16.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 14 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 21.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 12H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 21 AND 23. ! linenum: 23.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 21 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 24.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 21 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 24 AND 26. ! linenum: 26.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 24 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 31.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 24H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 31 AND 33. ! linenum: 33.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 31 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 34.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 31 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 34 AND 36. ! linenum: 36.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 34 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 41.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 36H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 41 AND 43. ! linenum: 43.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 41 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 44.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 41 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 44 AND 46. ! linenum: 46.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 44 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 51.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 48H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 51 AND 53. ! linenum: 53.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 51 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 54.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 51 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 54 AND 56. ! linenum: 56.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 54 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 61.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 60H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 61 AND 63. ! linenum: 63.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 61 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 64.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 61 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 64 AND 66. ! linenum: 66.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 64 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 71.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 72H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 71 AND 73. ! linenum: 73.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 71 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 74.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 71 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 74 AND 76. ! linenum: 76.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 74 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 81.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 84H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 81 AND 83. ! linenum: 83.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 81 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 84.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 81 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 84 AND 86. ! linenum: 86.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 84 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 91.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 96H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 91 AND 93. ! linenum: 93.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 91 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 94.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 91 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 94 AND 96. ! linenum: 96.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 94 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 101.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 108H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 101 AND 103. ! linenum: 103.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 101 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 104.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 101 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 104 AND 106. ! linenum: 106.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 104 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 111.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 120H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 111 AND 113. ! linenum: 113.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 111 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 114.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 111 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 114 AND 116. ! linenum: 116.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 114 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 121.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 11 BY 132H +/- 2H comment_1: ACTIVATE FOS BLUE SIDE IONGAUGE AFTER comment_2: THE FOS IS IN BLUE SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 121 AND 123. ! linenum: 123.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 121 BY 180M +/- 30M comment_1: TURN OFF THE FOS BLUE ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! linenum: 124.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 121 BY 6H +/- 2H; comment_1: ACTIVATE FOS RED SIDE IONGAUGE AFTER comment_2: THE FOS IS IN RED SIDE LVON STATE. comment_3: NO FOS ACTIVITIES MAY BE SCHEDULED comment_4: BETWEEN LINES 124 AND 126. ! linenum: 126.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 15S priority: 1 req_1: AFTER 124 BY 180M +/- 30M comment_1: TURN OFF THE FOS RED ION GAUGE AND comment_2: RECONFIGURE THE FOS TO HOLD MODE. ! ! end of exposure logsheet ! No scan data records found