H. Dannerbauer; 07-Dec-2006

Index TableOfContents(2)

1. Determination of Chopper Offset

• for detailed test description see PTD_2.3.1 (->file attachment:chopper.pdf) or in CVS

• Chopper has to be switched-off and controller disabled

• upload Chopper CPRs with position offset of zero using tcl-script CONF_Chopper_OBS.tcl with parameters fileU and calUcol

• start PacketRecorder

• start diag. HK with SPEC_Chopper_dhk_imt_OBS using Generic_CUS_script.tcl

• determine chopper offset (chop_offset) from DM_CHOP_CUR_POS
• include the new chopper offset in chopper control parameter set

  • -> PosOffset=(-1)*chop_offset

• stop diag. HK with SPEC_Chopper_dhk_stop_OBS using Generic_CUS_script.tcl

• close PacketRecorder

• switch-on chopper
• load up chopper control parameters including the new offset

  • -> tcl-script CONF_chopper_OBS.tcl with parameters fileU and calUcol

• enable chopper controller in order to upload new control parameter set

  • -> EnDis_chopper_OBS.tcl and parameter onoff ON

2. Chopper Open Loop Measurements

• for detailed test description see PTD_2.3.1 (->file attachment:chopper.pdf) or in CVS

• it is recommended to upload proper control parameter's using tcl-script CONF_chopper_OBS.tcl with parameters fileU and calUcol

• test should be operated in nominal spectroscopic mode; to do this execute the GeGa SFT; e.g. for He2 use PACS_GeGa_SFT_Init_Cold_He2_OBS.cus (Generic_CUS_script.tcl)

• chopper controller has to be at least disabled

• start diag. HK using SPEC_Chopper_dhk_4hk_1khz_OBS.cus (Generic_CUS_script.tcl)

• start PacketRecorder

• start script SPEC_Chopper_OpenLoop_MoveAbs_OBS.tcl given following parameters: chop_max_ma (maximum current in mA), chop_step_ma (current step width in mA) and chop_damptime (plateau duration in sec)

• close PacketRecorder

• stop diag. HK using SPEC_Chopper_dhk_stop_OBS.cus (Generic_CUS_script.tcl)

• at the end of the test chopper controller is disabled; if necessary switch-off chopper

3. Verify function of Ge:Ga detectors, CREs and detector heaters PTD 0.7.3 (TBD!)

• for detailed test description see PTD_0.7.3 (->file attachment:vergega.pdf) or in CVS

• prerequisites:
  • PACS in spectroscopic mode
  • blue detector heater should be around 2.1 K
• short test description:
  • procedures consists of two tests, one in loss-less compression mode to get raw ramps and one in default mode

  • start with test in loss-less compression mode; detector selection table with 14 randomly selected pixel DXS7602 in both channels; execute CUS script SPEC_detector_fmilt073_detsel_llc_OBS.cus (called by tcl-script Generic_CUS_OBS.tcl); script lasts 1659 seconds

  • do then test in default mode; therefore, execute CUS script SPEC_detector_fmilt073_standard_OBS.cus (called by tcl-script Generic_CUS_OBS.tcl); script lasts 134

4. Chopper Synchronization PTD 0.7.6 (TBD!)

4.1. Spectroscopic Mode (TBD!)

• for detailed test description see PTD_0.7.6_spec (->file attachment:chopsynspec.pdf) or in CVS

• prerequisites:
  • PACS in spectroscopic mode

  • setup Chopper Configuration Parameter for 8 degree; use from CAL-U table CONFChopper the column FM_sa2_81deg

• short test description:
  • we use the SPU mode loss less compression

  • detector selection table with 14 randomly selected pixel DXS7602 in both channels

  • use CUS script SPEC_Chopper_fmilt076spec_detsel_llc_OBS.cus for conducting this test (called by tcl-script Generic_CUS_OBS.tcl); script lasts 865 seconds

4.2. Photometeric Mode (TBD!)

• for detailed test description see PTD_0.7.6_phot (->file attachment:chopsynphot.pdf) or in CVS

• prerequisites:
  • PACS in photometric mode

  • setup Chopper Configuration Parameter for 8 degree; use from CAL-U table CONFChopper the column FM_sa2_81deg; to do this do following:

    • if chopper controller enabled, disable chopper controller with CUS script XXX (called by tcl-script XXX with parameters XXX)

    • do chopper configuration with CUS script XXX (called by tcl-script XXX with parameters XXX)

    • enable chopper controller with CUS script XXX (called by tcl-scritp XXX with parameters XXX)

• short test description:
  • we use the SPU mode loss less compression

  • detector selection table with 14 randomly selected pixel DXS7602 in both channels

  • use CUS script PHOT_Chopper_fmilt076phot_detsel_llc_OBS.cus for conducting this test (called by tcl-script Generic_CUS_OBS.tcl); script lasts 51 seconds

5. Internal Calibration Sources PTD 0.7.11_12 & 2.5.3

• prerequisites:
  • PACS in spectroscopic mode

• for detailed test description see PTD_0.7.11_12 (->file attachment:cs.pdf) or in CVS

• the test is divided in several parts:

5.1. Day 16:

• load up CSs control parameter set using tcl-scripts CONF_CS1_OBS.tcl and CONF_CS2_OBS.tcl and the parameters calUfile=CONFCs1Cs2 and model=FM1

• heat-up of CSs including switching-on, enabling and setting of temperature: SPEC_CS_fmilt071112_heatup_cs_OBS.cus (Generic_CUS_OBS.tcl)

• switch-off CSs with SPEC_CS_fmilt071112_switchoff_cs_OBS.cus (Generic_CUS_OBS.tcl)

5.2. Day 17:

• if necessary change CSs control-parameter in CAL-U table CONFCs1Cs2 -> PTD 2.5.3

• load up CSs control parameter set using tcl-script CONF_CS1_OBS.tcl and CONF_CS2_OBS.tcl and the parameters calUfile=CONFCs1Cs2 and model=FM1 (TBC)

• heat-up of CSs including switching-on, enabling and setting of temperature: SPEC_CS_fmilt071112_heatup_cs_OBS.cus (Generic_CUS_OBS.tcl)

• switch-off CSs with SPEC_CS_fmilt071112_switchoff_cs_OBS.cus (Generic_CUS_OBS.tcl)

5.3. Day 18:

• this test has two heat-up's and cool-down
  • short test description:
  • switch-on and enable CSs
  • heat-up to CS1 and CS2 temperature value XX/XX (TBD) and stabilization at temperature plateau for in total 80 minutes
  • go to a second temperature plateau (CS1=XX/CS2=XX;TBD) - 60 minutes
  • cool-down (CS1=XX/CS2=XX;TBD) - script stops then 60 seconds after commanding the cool-down values; stop of recording file should be done after 60(TBD) minutes
• Conduct following steps at commanding concole:

  • load up CSs control parameter set using tcl-scripts CONF_CS1_OBS.tcl and CONF_CS2_OBS.tcl and the parameters calUfile=CONFCs1Cs2 and model=FM1 (TBC)

  • use CUS script SPEC_CS_fmilt071112_swon_cs_perf_OBS.cus for conducting this test (called by tcl-script) Generic_CUS_OBS.tcl)

  • CSs will not be switched-off
• comment:
  • if necessary (e.g. in phase of control loop optimization) the temperature values in the CUS-script should be adapted

6. Optimum Bias Setting PTD 1.2.1_2_17

• set OGSE BB Temperatures (BB1=25.3K;BB2=24.7K)
• wait for stabilization
• set OGSE Chopper Wheel (CW;ROT;438mHz)

• set spectroscopic housekeeping (e.g., use PACS_GeGa_SFT...He2)

• upload proper control parameter's using tcl-script CONF_chopper_OBS.tcl with parameters fileU=CONFChopper and calUcol=ZEISSoffset2

• switch-on chopper and check if it is stable
• enable chopper and check if it it is stable
• switch-on and enable grating
• heater to 1.5mA

• use SPEC_detector_fmilt121_part1_OBS for red array (1648 sec)

• after end of test which lasts about 1648 sec perhaps switch-off chopper wheel
• put FW to Pos B
• set OGSE BBs to new temp (BB1=32.45K;BB2=31.55K)

• use SPEC_detector_fmilt121_part2_OBS for blue array (8035 sec)

• switch-off OGSE BBs and Chopper wheel