Difference between revisions of "Data Analysis - General Parameters"
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==General Parameters== | ==General Parameters== | ||
− | Common | + | General parameters are broken into two categories; parameters that are not spectrometer specific, and those that are spectrometer specific. The general parameters are included in the general.param files located at <code>DBASE/<spec></code> Common general parameters used for the hall C beamline and debug mode are stored in the <code>PARAM/GEN/</code> directory. Spectrometer specific general parameters are included at:<br> |
+ | <code>PARAM/SHMS/GEN/</code><br> | ||
+ | <code>PARAM/HMS/GEN/</code><br> | ||
+ | |||
+ | ==Non-Spectrometer Specific General Parameters== | ||
+ | There used to be energy loss parameters included in this directory for the old Fortran analyzer. The C++ analyzer no longer calculates energy loss, so the variables associated with energy loss have been removed. <br> | ||
The main parameters of this section are the BCM scalers and the BPM positions from HARP scans and the raster conversions. These aspects have their own devoted analysis section. | The main parameters of this section are the BCM scalers and the BPM positions from HARP scans and the raster conversions. These aspects have their own devoted analysis section. | ||
− | === | + | ===Global GEN Files=== |
* PARAM/GEN/genflags.param - Only includes the gen_run_starting_event parameter. | * PARAM/GEN/genflags.param - Only includes the gen_run_starting_event parameter. | ||
* PARAM/GEN/gdebug.param - No used parameters | * PARAM/GEN/gdebug.param - No used parameters | ||
Line 100: | Line 105: | ||
gfry_dist = 1337 ; cm | gfry_dist = 1337 ; cm | ||
− | + | ==Non-Spectrometer Specific General Parameters== | |
− | + | ===Spectrometer GEN Files=== | |
− | |||
− |
Revision as of 11:57, 27 September 2021
General Parameters
General parameters are broken into two categories; parameters that are not spectrometer specific, and those that are spectrometer specific. The general parameters are included in the general.param files located at DBASE/<spec>
Common general parameters used for the hall C beamline and debug mode are stored in the PARAM/GEN/
directory. Spectrometer specific general parameters are included at:
PARAM/SHMS/GEN/
PARAM/HMS/GEN/
Non-Spectrometer Specific General Parameters
There used to be energy loss parameters included in this directory for the old Fortran analyzer. The C++ analyzer no longer calculates energy loss, so the variables associated with energy loss have been removed.
The main parameters of this section are the BCM scalers and the BPM positions from HARP scans and the raster conversions. These aspects have their own devoted analysis section.
Global GEN Files
- PARAM/GEN/genflags.param - Only includes the gen_run_starting_event parameter.
- PARAM/GEN/gdebug.param - No used parameters
- PARAM/GEN/gtarget.param - No used parameters, Eloss not included in hcana. Eloss handeled in rc-externals
- PARAM/GEN/gbeam.param - Calibration of beam position on target and raster settings.
- PARAM/GEN/gscalers.param - Calibration of scaler BCM branches. Must be set before running the BCM calibration procedure.
gscalers
gscalers.param gNumBCMs = 6 gBCM_Names = " BCM1 BCM2 Unser BCM4A BCM4B BCM4C" gBCM_Gain = 4795.0, 4092.0, 4000.0, 13020.0, 2042.0, 6238.0 gBCM_Offset = 250300.0, 250200.0, 393000.0, 432.4, 204.9, 127.8 gBCM_Current_threshold = 5.0
- index = 0 to gNumBCMs-1
gBCM_Current_threshold_index = 3
gbeam
gbeam_sp18.param
- BPM calibration constants
- =========================
- average beam positions
- Use the Hall C EPICS BPM values in units of cm
- gbeam_x = +0.00
- gbeam_xp = +0.00
- gbeam_y = +0.00
- gbeam_yp = +0.00
- Add new variables for Hall C BPM A, B, and C, based on HARP calibration
- Updated by Dave Gaskell
gbpmxa_slope = -0.98 gbpmxa_off = -0.05 gbpmxb_slope = -1.12 gbpmxb_off = +0.08 gbpmxc_slope = -0.96 gbpmxc_off = -0.89 gbpmya_slope = 0.97 gbpmya_off = -0.20 gbpmyb_slope = 1.17 gbpmyb_off = 0.38 gbpmyc_slope = 0.87 gbpmyc_off = 0.47
- positions of BPMs relative to target (from DIMAD)
- gbpma_zpos = 370.82 ; cm
- gbpmb_zpos = 224.96 ; cm
- gbpmc_zpos = 129.30 ; cm
- positions of BPMs relative to target (from Fall 2017 survey)
gbpma_zpos = 320.42 ; cm gbpmb_zpos = 224.86 ; cm gbpmc_zpos = 129.44 ; cm
- positions of BPMs relative to target (from Fall 2018 survey)
- gbpma_zpos = 320.17 ; cm
- gbpmb_zpos = 224.81 ; cm
- gbpmc_zpos = 129.38 ; cm
- Fast Raster calibration constants
- =================================
gusefr = 1
- flag if 1 fast raster data used with average beam pos and angles in
- calculating beam position
- if 0 then only use average beam pos and angles in calculating beam position
- Various fast raster quantities
- gUse* are flags
- Raster constants determined from coin run 4556 on Aug 20, 2018
- gfr_cal_mom = 8.518
- gfrxa_adc_zero_offset = 64150
- gfrxb_adc_zero_offset = 66250
- gfrya_adc_zero_offset = 67700
- gfryb_adc_zero_offset = 64100
- gfrxa_adcpercm = 158000
- gfrxb_adcpercm = 147000
- gfrya_adcpercm = 155500
- gfryb_adcpercm = 157500
gfr_cal_mom = 6.4 ; = beam momentum during jan 2018 3 pass gfrya_adcpercm = (77755.-57411.)/.2; gfryb_adcpercm = (71093.-52056.)/.2; gfrxa_adcpercm = (75733.-51938.)/.2; gfrxb_adcpercm = (79778.-57293.)/.2;
gfrya_adc_zero_offset = (77755.+57411.)/2.; gfryb_adc_zero_offset = (71093.+52056.)/2.; gfrxa_adc_zero_offset = (75733.+51938.)/2.; gfrxb_adc_zero_offset = (79778.+57293.)/2. ;
- positions of FR magnets relative to target
gfrx_dist = 1375 ; cm gfry_dist = 1337 ; cm