PACS bolometer operation from the commanding point of view
T. Mueller, D. Cesarsky; 08-Nov-2006
= SFT Warm: Sorption Cooler and Bolometer detector chain=
- PACS_Phot_SFT_Cooler_Warm_OBS, calling PACS_Phot_SFT_Cooler_WarmBR
- PACS_Phot_DPU_DMC_Setup_OBS, calling PACS_Phot_DPU_DMC_SetupBR - PACS_Phot_Switchon_OBS, calling PACS_Phot_SwitchonBR - PACS_Phot_Sequencer_Setup_OBS, calling PACS_Phot_Sequencer_SetupBR - PACS_Phot_SPU_Setup_OBS, calling PACS_Phot_SPU_SetupBR - PACS_Phot_Warm_Startinputsignal_OBS, calling PACS_Phot_Warm_Startinputsignal (Duration: 637 sec)BR - PACS_Phot_SPU_Reset_OBS, calling PACS_Phot_SPU_ResetBR - PACS_Phot_Switchoff_OBS, calling PACS_Phot_SwitchoffBR
= SFT at HeI: Sorption Cooler and Bolometer detector chain=
- PACS_Phot_SFT_Cooler_OBS, calling PACS_Phot_SFT_CoolerBR
- PACS_Phot_DPU_DMC_Setup_OBS, calling PACS_Phot_DPU_DMC_SetupBR - PACS_Phot_Switchon_OBS, calling PACS_Phot_SwitchonBR - PACS_Phot_Sequencer_Setup_OBS, calling PACS_Phot_Sequencer_SetupBR - PACS_Phot_SPU_Setup_OBS, calling PACS_Phot_SPU_SetupBR - PACS_Phot_Cold_Startinputsignal_OBS, calling PACS_Phot_Cold_Startinputsignal (Duration: 637 sec)BR - PACS_Phot_SPU_Reset_OBS, calling PACS_Phot_SPU_ResetBR - PACS_Phot_Switchoff_OBS, calling PACS_Phot_SwitchoffBR
= SFT at HeII (cooler not recycled): Sorption Cooler and Bolometer detector chain=
- PACS_Phot_SFT_Cooler_OBS, calling PACS_Phot_SFT_CoolerBR
- PACS_Phot_DPU_DMC_Setup_OBS, calling PACS_Phot_DPU_DMC_SetupBR - PACS_Phot_Switchon_OBS, calling PACS_Phot_SwitchonBR - PACS_Phot_Sequencer_Setup_OBS, calling PACS_Phot_Sequencer_SetupBR - PACS_Phot_SPU_Setup_OBS, calling PACS_Phot_SPU_SetupBR - PACS_Phot_Cold_Startinputsignal_OBS, calling PACS_Phot_Cold_Startinputsignal (Duration: 637 sec)BR - PACS_Phot_SPU_Reset_OBS, calling PACS_Phot_SPU_ResetBR - PACS_Phot_Switchoff_OBS, calling PACS_Phot_SwitchoffBR
1. Instrument switch-on and connection of the warm electronic boxes
- currently done with tcl-script PACS_Switch_On.tcl (maintained by FGB)BR - after execution: PACS is in SAFE mode
2. Cooler recycling (only at HeII temperatures)
- starting out of SAFE modeBR - CUS script: BOLO_cool_recycle (no sub-procedures are called)BR - ending up in SAFE modeBR
3. General Setup for Photometer Operation (at warm, HeI, HeII temperatures and after cooler recycling)
- starting out of SAFE modeBR - CUS script:BR
block PHOT_setup calling the following CUS procedures (will be renamed to PHOT_orbit_prologue):
(*) certain parameter values depend on the temperature environment!BR
- ending up in PHOTOMETRY mode, but SPU processing has not yet startedBR - Note: filter is in position "A", chopper at position "0"BR - calibration sources are set to default values, but need 30-40 min stabilisation time!!!BR
4. Operation of the bolometers (starting out of PHOTOMETRY mode)
4.1. start/stop of bolometer data flow
CUS scripts:BR
4.2. Change of the bolometer data/sequence mode and gain
CUS scripts:BR
4.3. Take data with manual chopper & filter movements
CUS scripts:BR
4.4. Take data with pre-defined OBCPs
CUS scripts:BR
- procedure PHOT_spu_setup ---> bolometer data flow runningBR
- block OBCP_chopped_photometryBR - block OBCP_chopped_photometry_ditherBR - block OBCP_phot_freezeframeBR - block OBCP_phot_cal_IBR - block OBCP_phot_cal_IIBR - block OBCP_phot_cal_IIIBR - block OBCP_phot_staringBR - block OBCP_phot_chopper_scanBR
- block PHOT_all_aots_OBSBR
- procedure PHOT_spu_resetBR
4.5. Execute AOT observations
CUS scripts (to be finalised):BR
PHOT_AOTBR
- PacsPhotDefaultsBR - PacsPhotEstimatorOBCPnBR
Logic chooses and issues a pointing mode out of:BR
- WriteOBSIDBR - PacsPhotSlewCalBR
- PacsPhotCommandOBCP7BR
- OBCP_staring_photometryBR
- PacsPhotCommandOBCP5BR
- OBCP_chopped_photometry_ditherBR
- PHOT_aot_epilogueBR - WriteEndIDBR - PacsPhotNoiseRMSBR - PacsMessageCenterBR
5. Reset after photometer operation
- PACS is in PHOTOMETRY or any other modeBR - going into SAFE mode:BR
- after execution: PACS is in SAFE modeBR
6. Instrument switch-off
- currently done with the tcl-script PACS_Switch_Off.tcl (maintained by FGB)BR - after execution: PACS is switched offBR
7. NOTES
- there are more CUS scripts related to the SFT warm, HeI and HeII which are not mentioned here (see PACS-ME-TP-007)BR - some specific photometer tests, like the thermal behaviour measurements, start directly out of SAFE mode, while most of the tests will be executed after the PHOT_setup - the above mentioned CUS scripts (with a few exceptions) have been tested and are available in the CUS database and from the CVS libraryBR - the AOT related CUS-scripts are still under testing