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daq:decomp_calibrations [2017/02/27 12:38] peter_bender |
daq:decomp_calibrations [2017/02/27 13:49] weisshaa |
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| == detmap files == | == detmap files == | ||
| - | The calibration procedure starts with a detmap file. Such a file exists for each quad. Each file is a plain text list of the offset and gain of each channel of the quad respectively. The channels are seperated by new lines. The order of the channels is in the the daq order (i.e the order they arrive at the digitizer, remember Q1 is different). The naming scheme of the files is important for the rest of the scripts to work; current convention is **detmap_Q1.txt**, where the 1 could be replaced by any quad number. | + | The calibration procedure starts with a detmap file. Such a file exists for each quad. Each file is a plain text list of the offset and gain of each channel of the quad respectively. The channels are separated by new lines. The order of the channels is in the the daq order (i.e the order they arrive at the digitizer, remember Q1 is different). The naming scheme of the files is important for the rest of the scripts to work; current convention is **detmap_Q1.txt**, where the 1 could be replaced by any quad number. |
| A truncated example of a detmap file: | A truncated example of a detmap file: | ||
| Line 22: | Line 22: | ||
| Above are the first ten channels of the one detmap file. The first column is the offset, the second column is the gain. The channel is indicted by the row number. | Above are the first ten channels of the one detmap file. The first column is the offset, the second column is the gain. The channel is indicted by the row number. | ||
| + | |||
| + | detmap files live in gretina account as ~/DecompParam/detmap_YYMMDD | ||
| == Splitting the detmap files == | == Splitting the detmap files == | ||
| - | After the creation of the detmap files, they must be split into the corresponding cores and segments. Assuming the above formatted file and standard file convention; this can be done with the script: | + | After the creation of the detmap files, they must be split into the corresponding cores and segments. Assuming the above formatted file and standard file convention; this can be done with the script run in same directory where the detmap files live. |
| - | + | ||
| - | <code> | + | |
| - | ~analysis/packages/Calibrations/split_cal.py | + | |
| - | </code> | + | |
| This is script is run by passing it the detmap file to be split: | This is script is run by passing it the detmap file to be split: | ||
| Line 234: | Line 231: | ||
| </code> | </code> | ||
| + | Once the new setfile is edited to point to the newly created Decomp files, we must tell the gretina daq to load use this new setfile. This is done by editing the file **~gretina/grdecomp.sh** In the file, the parameter FILECONF should be edited to point to the newly created setfile. This parameter is at the top of the file in the first uncommented line. The convention is to copy the line, comment out the old definition, and change the setfile name in the new line. | ||
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| + | == Loading new Decomp Parameters == | ||
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| + | Once all the above is done, we must tell the daq to load the new decomp values. This can be done either using the buttons, **GRETINA Stand Alone** of **GRETINA + S800**, or by running the script **~gretina/grdecomp.sh** directly. | ||
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| + | After the above load - the daq should be started and left to run for a few minutes. If there is some mistake in the loading of the above files, this will cause the buffers for the bad channels to fill up and the daq will stall. | ||
