1) Add tree variables for the three BPMs and projections to target
in the EPICs coordinate system (+X beam right, +Y up)
rb.raster.fr_xbpm_tar
rb.raster.fr_ybpm_tar
rb.raster.fr_xbpmA
rb.raster.fr_ybpmA
rb.raster.fr_xbpmB
rb.raster.fr_ybpmB
rb.raster.fr_xbpmC
rb.raster.fr_ybpmC
2) Modified code so that it only modifies the BPM variables if they
are all !=0 ( beam on) . Otherwise it sets them to the previous EPICS
read. This gets rid of all zero EPICS reads,except if the first EPICs
read the beam is off.
3) Removed the reading of gpbeam from the global parameter list in the Process
method and just have it in ReadDatabase.
4) Change the calculation of beam at target to use the projection of
BPM_A and BPM_C instead of BPM_A and BPM_B.
5) Remove setting the raster position to the hcana beam coordinate system
with (+X beam left). The raster is in the EPICS coordinate system.
This makes it easier to interpret the carbon hole runs.
Update THcHallCSpectrometer.cxx
Added setting of spectrometer mispointing according the the input
spectrometer angle if the mispointing is not set by a parameter.
The formulas for deteriming the mispointing comes from fits to sureys.
If one wants to use different spectrometer mispointings then
it is best to set hmispointing_x,hmispointing_y for HMS
and pmispointing_x,pmispointing_y for SHMS in the kinematics setting file
such as standard.kinematics .
Modified THcRaster.cxx and THcRaster.h
1) Add tree variables for the three BPMs and projections to target in the EPICs coordinate system (+X beam right, +Y up) rb.raster.fr_xbpm_tar rb.raster.fr_ybpm_tar rb.raster.fr_xbpmA rb.raster.fr_ybpmA rb.raster.fr_xbpmB rb.raster.fr_ybpmB rb.raster.fr_xbpmC rb.raster.fr_ybpmC
2) Modified code so that it only modifies the BPM variables if they are all !=0 ( beam on) . Otherwise it sets them to the previous EPICS read. This gets rid of all zero EPICS reads,except if the first EPICs read the beam is off.
3) Removed the reading of gpbeam from the global parameter list in the Process method and just have it in ReadDatabase.
4) Change the calculation of beam at target to use the projection of BPM_A and BPM_C instead of BPM_A and BPM_B.
5) Remove setting the raster position to the hcana beam coordinate system with (+X beam left). The raster is in the EPICS coordinate system. This makes it easier to interpret the carbon hole runs.
Update THcHallCSpectrometer.cxx
Added setting of spectrometer mispointing according the the input spectrometer angle if the mispointing is not set by a parameter.
The formulas for deteriming the mispointing comes from fits to sureys.
If one wants to use different spectrometer mispointings then it is best to set hmispointing_x,hmispointing_y for HMS and pmispointing_x,pmispointing_y for SHMS in the kinematics setting file such as standard.kinematics .