MIPS Campaign Start-up Activities, Si and Ge

Principal: dmkelly
Deputy: cengelbracht
Data Monkey(s): I am monkey enough for this one
Priority: Necessary
Downlink Priority: Normal
Analysis Time: 24h
Last Updated:

Objective

Prepare the MIPS Si and Ge arrays for science operations by executing a standard set of MIPS turn-on tasks.

Description

1) Turn on power to the combined electronics
2) Transition from OFF to MIPS_OBSERVE
3) Perform thermal anneals on all three arrays
4) Perform a Vrst Optimization on the 70um and 160um arrays
5) Point the telescope to the first desired target
6) Before beginning the next IOC task, wait as necessary until
   10 minutes have elapsed since bias was restored to the Ge
   arrays and 30 minutes has elapsed since the CE power-on

Data Collected

Diagnostic data will be collected during the thermal anneals.
For the 24um anneal, 160 samples will be collected on 1s intervals.
The items are:
  1. D24TmpA      2. D24TmpB     3. D160TmpA     4. D24AnnealCur  5. D70TmpA
  6. D160JnctTmp  7. D70BaseTmp  8. D160BaseTmp  9. D160StimTmp  10. CSMMTmp
For the 70um anneal, 60 samples will be collected on 1s intervals.
The items are:
  1. D70TmpA      2. D70TmpB     3. D70JnctTmp   4. D70AnHtrCur   5. D24TmpA
  6. D160TmpA     7. D70BaseTmp  8. D160BaseTmp  9. D160JnctTmp  10. CSMMTmp
For the 160um anneal, 80 samples will be collected on 1s intervals.
The items are:
  1. D160TmpA     2. D160TmpB    3. D160JnctTmp  4. D160AnHtrCur  5. D24TmpA
  6. D70TmpA      7. D70BaseTmp  8. D160BaseTmp  9. D160StimTmp  10. CSMMTmp
For the Vrst optimization, we will collect:
mips_sur_C0F2N13


CE_OFF_BOOT
CE_BOOT_OPR
MIPS_OPR_MRDY
MIPS_MRDY_MOBS
  ColDiag_160TMP_MIPS
    CEGEANNEAL_Heat_GE160_MIPS
  CEDumpDiag
  ColDiag_70TMP_MIPS
    CEGEANNEAL_Heat_GE70_MIPS
  CEDumpDiag
  ColDiag_24TMP_MIPS
    Si_Anneal_Heat_MIPSA_MIPS
  CEDumpDiag
MIPS_MOBS_SCAN
# Set the Ge array bias voltages to 0 mV
sendcmd CELDHTGIF '3,0x80,"MIPS"'
sendcmd CELDHTGIF '20,0x81,"MIPS"'
# Initialize the array in preparation for taking data
sendcmd CEGERSTCON '127,127,4,"MIPS"'
sendcmd CESCANCON '"CHOP","REV",0,2048,2048,0,511,"MIPS"'
# Turn on the Ge flood stims in manual mode
sendcmd CEGESTIM '"MANUAL",8,"BON","BON","BOTHOFF",10,10,"MIPS"'
# Send the 12 CELDHTGIF commands needed to set the 70um and 160um
# voltages appropriately for the first exposure.
# pause 5 sec
# Collect 2 10s exposures in SUR mode
sendcmd CEMIPSUR 'AORID_upper,AORID_lower,0,"NO_COADD",9,2,"MIPS"'
# Repeat the CELDHTGIF and CEMIPSUR sequence for 12 more sets of Vrst values
# Restore 70um bias to 40mV, 160um bias to 30mV
sendcmd CELDHTGIF '3,0x91,"MIPS"'
sendcmd CELDHTGIF '20,0x8E,"MIPS"'
# Restore CEGESTIM to its nominal settings
sendcmd CEGESTIM '"AUTO",63,"BOTHOFF","BOTHOFF","BOTHOFF",10,10,"MIPS"'
# Restore nominal CEGERSTCON parameters
sendcmd CEGERSTCON '10,127,4,"MIPS"'
MIPS_BACKTO_MOBS
# Wait 10m to allow the Ge detectors and CE to settle.
wait 600

Data Reformatting Requirements

Array Data Desired:

CECOLDIAG data from the anneals All Array data for the Vrst optimization

Data Reformatting Option:

NONE

Special Instructions:

Task Dependencies

MIPS-015, first CE power-on.

Calibration Dependencies

None

Output and Deliverable Products

We will generate plots of temperature versus time for each of the thermal anneals. We will record maximum temperatures on each of the arrays and maintain these results in a database. Relevant ancillary data (TBD) will also be entered in the database. We will determine optimal Vrst values for the eight 70um and four 160um modules. These data will be compared with ground data and entered into a database. An assessment will be made after each campaign whether to update the Vrst values.

Data Analysis

Step-by-step analysis:
1) Obtain the diagnostic data.  This seemingly obvious step is called
   out because these data might not be delivered with the usual science data.
   They will not go through tranhead, nor through the SSC pipeline.  
2) Generate plots of temperature versus time for each of the temperatures.
   The tools necessary for this step are listed in the cookbook for mips-015.
3) Determine the maximum temperature reached on each array during its
   anneal and enter these values into a database.  Maintain plots of
   these items versus execution day and time so that long-term trending
   can be performed.
4) Check for changes in the long-term thermal behavior of the arrays 
   during anneals.  If present, assemble ancillary data (TBD) that 
   affects the anneal temperatures and look for trends.  This step
   will likely involve keeping the data from all IOC thermal anneals
   in a master spreadsheet, with coadding to produce master temperature
   plots and with overplotting to compare the most recent anneal with
   the master anneal temperature curves.
5) Reduce the Vrst optimization data using mips_sloper -l -a flight_ce#
7) Determine the optimum Vrst values using a yet-to-be-developed tool 
   for this purpose.  A preliminary (and perhaps sufficient) tool has
   been developed for this purpose by John Stansberry.
8) Enter the optimum Vrst values into a database along with relevant
   ancillary data and plot versus execution day and time.  Look for
   trends and offsets and determine whether different Vrst values 
   would be appropriate for the next campaign.
9) If new Vrst values are needed, take action to get these values
   entered into the CE MIPS/IRS patchblock for the next MIPS campaign.

Software Requirements

IDL script for plotting data from CECOLDIAGs: diagdump24_ioc.pro. This script will need to be modified to allow overplotting.
A spreadsheet for maintaining a record of anneal temperatures during IOC.
mips_sloper
IDL tool for determining optimum Vrst values

Actions Following Analysis

Check for the long-term stability of the anneal temperatures and Vrst values. If there are drifts, determine the cause of the drifts and take action if necessary. Determine whether new Vrst values are needed for the next campaign. If so, get the new values entered in the CE MIPS/IRS patchblock.

Failure Modes and Responses

There are several possible failures. If the anneal failed to happen, we need to determine whether there was a scripting problem and get it fixed. We also need to inspect the subsequent data and see if it is usable. The data might need to be flagged for special handling, but probably not since the offset drifts are pretty minimal. If the heater failed, we need to assess whether a CE side swap is warranted. If the array did not reach the desired temperature, we need to check that the anneal duration and current were as planned, and we need to assess whether thermal conductances have changed since ground testing. If the CECOLDIAG data are corrupted, we need to determine first and foremost whether the anneal happened, and then we can check for scripting errors. If the Vrst optimization does not run properly, the commanding should be checked and corrected. We can proceed using the old Vrst values until evidence is presented that we need new values.

Additional Notes

Once the diagnostic data analysis tools are developed, there will be
pointers here to those tools.  A table will be added here showing
maximum temperatures reached during thermal anneals in ground testing.

The following is a summary of the Vrst data from ground testing.  These
Vrst values were determined by human analysis; the analysis should be
repeated using an automated Vrst optimization tool.

#70um and 160um optimum Vrst values, CE1  
#(Viload=-1.1, CE2 or EMU' connected)
#
#Date   V70_1 70_2  70_3  70_4  70_5  70_6  70_7  70_8  160_1 160_2 160_3 160_4
#Offset 0x900 0x8E0 0x900 0x8D0 0x900 0x900 0x910 0x8F0 0x970 0x910 0x920 0x920
00-060    5     6     1     5     8    -3    -5     5   -99   -99   -99   -99
00-060_2  9    13    11    13    13     5     1     9   -99   -99   -99   -99
00-067   13    13     9    21    13     5     5    13   -99   -99   -99   -99
00-067_2 13    11     7    17    13     7     3    11   -99   -99   -99   -99
00-068    9     9     9    21    17     1     1    13   -99   -99   -99   -99
00-069   13    11     5    17    17     3    -1    11   -99   -99   -99   -99
00-119    7     9     9    13    13     3    -5    13    13    23    15     8
00-123    9     9     8    11    13     5    -2     9    12    22    14     7
00-351   17    22    19    31    25    13    19    27   -99    15    -6   -14
00-353   17    24    20    31    25    15    20    23   -99    17    -1   -13
01-117   11    20     9    19    19     2    15    17    -8     9    -8   -15
01-118    9    18     9    19    25     9    15    21   -12     9    -8   -14
01-120   11    22    15    13    23    10    14    21    -5    12    -2   -15
01-121   12    23    14    20    23    11    15    17    -8     9    -8   -15
01-121_2 11    22    14    19    22    10    15    21   -12     9    -8   -14
01-131   14    24    16    26    22    11    17    20    -4    13    -2   -11
01-220   19    26    24    27    22    13    16    20    -3    12    -1   -13
01-226   18    24    20    28    19    12    14    20    -2    11    -1   -12
01-286   13    20    13    19   -99   -99   -99   -99    -3    11    -2   -12
01-302   17    24    21    25    14     4     5    11    -1    12     1    -9
FltDef   14    23    16    23    22    11    16    21    -7    12    -4   -13

#70um and 160um optimum Vrst values, CE2  
#(Viload=-1.1, CE1 or EMU' connected)
#
#Date   V70_1 70_2  70_3  70_4  70_5  70_6  70_7  70_8  160_1 160_2 160_3 160_4
#Offset 0x900 0x8E0 0x900 0x8D0 0x900 0x900 0x910 0x8F0 0x970 0x910 0x920 0x920
00-075    5     1    -9     5     9     1   -13     1   -99   -99   -99   -99
00-076    5     1    -7     5     9     1    -9     1   -99   -99   -99   -99
00-077   10     1    -6     9    12     3   -11    -1   -99   -99   -99   -99   
00-124    5     6     4    10     9    -3    -5     5     0    -3    -5     1
00-126   -2     0    -3     7    -1   -12   -15    -4     2    -3    -4     3
00-356   11     9    10    25    26    14     7    18   -15    -8   -18   -14
01-116   12    10     1    17    26    14     7    16   -15    -8   -18   -11
01-116_2  5     9    -4    12    22    12     4    18   -17    -8   -18   -12
01-124    5     9    -6    14    17     5     3     8   -21   -12   -22   -13
01-129   11    11    -1    15    24    13     7    16   -13    -8   -17   -11
01-130   10     9    -2    12    23    11     4    12   -17   -10   -20   -12
01-222   11    13     6    20    21    12     5    11    -9    -3    -8   -12
01-230   13    12     0    23    20    11     1     9    -6    -3   -10   -12
01-265    4     5    -8    12    20     8     3    10   -22   -13   -22   -16
01-302   11    11    -2    16    14     4    -5    15    -9    -5   -12   -13
02-108   13    13     5    16    21    10     5    14   -14    -9   -16    -8
FltDef   10    10     0    17    23    11     5    13   -14    -8   -16   -12