; BPM calibration constants ; ========================= guse_bpm_in_recon = 0 ; if 1 use bpm information for reconstruction guse_bpmc = 1 ; if 1 use bpm c information for reconstruction gbpm_sample = 500 ; number of events, which are used for average ; beam position ( <5000 ). Optimal value dep. on rate ; These are from CSA's initial bpm cal 4/5/99, runs 24950, 51, ; 54, 57, and 59. ; gbpm_kappa = 1.500,1.302,1.330 ; sensitivity in cm ; gbpm_alpha_x = 1.00, 1.00, 1.00 ; calibration gain: we may get them from the ; gbpm_alpha_y = 1.00, 1.00, 1.00 ; EPICS events, right now that's according to Paul's note ; According to Accel (from Paul G): ; gbpm_kappa = 1.889,1.889,1.889 ; sensitivity in cm gbpm_kappa = 1.85,1.85,1.85 ; sensitivity in cm gbpm_alpha_x = 0.929157, 1.08666, 1.01899 gbpm_alpha_y = 1.065, 1.03812, 0.956884 ; The following offsets get added to the calculated positions ; These are from CSA's initial bpm cal 4/5/99, runs as above. ; gbpm_x_off = 0.069,-0.045,-0.045 ; gbpm_y_off = 0.038,-0.097,0.022 gbpm_x_off = 0.,0.,0. gbpm_y_off = 0.,0.,0. ; average beam positions: only used if 'guse_bpm=0' ; gbeam_xoff = +0.18 gbeam_xoff = +0.00 gbeam_xpoff = +0.00 gbeam_yoff = +0.00 gbeam_ypoff = +0.00 ; spectrometers would like to see these positions (from optics studies) ; we treat SOS and HMS the same, however, we may change this if necessary ; gspec_xoff = +0.18 gspec_xoff = +0.00 gspec_xpoff = +0.00 gspec_yoff = +0.00 gspec_ypoff = +0.00 ; Pedestals for BPM ADCs: from cosmic runs 24941 and 42, ; 4/5/99 (look at histos for X+, etc.; the peds file may ; include high-adc events). CSA. gbpm_xp_ped = 952., 1041., 954. gbpm_xm_ped = 1012., 1043., 954. gbpm_yp_ped = 964., 1013., 887. gbpm_ym_ped = 1110., 969., 954. ; positions of BPMs relative to target gbpm_zpos = 327.,231.,136. ; Fast Raster calibration constants ; ================================= ; Various fast raster quantities: gUse* are flags gusefr = 1 ; if 1 correct for FRY in reconstruction guse_frdefault = 1 ; if 1 do no phase correction (default) gfr_cal_mom = 3.245 ; = beam momnetum during calibration run ; gfrx_adcpercm = 11328. ; = FR channels per cm deflection on target ; gfry_adcpercm = 10708. ; from run 9981, August 25, 1996, book X-22 ; the 1.4125 and 1.5811 come from modified attenuation ; the 2.2/3.0 came from a recalibration against the cryotarget ladder motion. ; 7/28/99 -- Now change x gain from 0.02 to 0.06 and y gain from ; 0.04 to 1.0 gfrx_adcpercm = (11328./1.4125*2.2/3.0*0.06/0.02) ; -3 db attenuator added gfry_adcpercm = (10708./1.5811*2.2/3.0*0.1/0.04) ; -10 db AND double gain on module. ;if 0 apply phase correction gfrx_dphase = 0.0 ; phase shift (never measured for x so far) gFrx_synccut = 0. ; should be zero if applied on centered distr. gfrx_adcmax = 1000 ; ADC amplitude in channels. gfrx_maxsize = 0.1 ; fast raster amplitude in centimeter. gfry_dphase = 5.8 ; phase shift gFry_synccut = 0. ; should be zero if applied on centered distr. gfry_adcmax = 1000 ; ADC amplitude in channels. gfry_maxsize = 0.1 ; fast raster amplitude in centimeter. ; The latest FR phase analysis from spring '96 showed, that there is no ; measurable phase shift. During early running (E91-13, E89-12) the FRY-phase ; was determined to be 5.8 degree. ; positions of FR magnets relative to target gfrx_dist = 2111 ; cm gfry_dist = 2071 ; cm