1 cdaq 1.1 SUBROUTINE H_SCIN_EFF(ABORT,errmsg)
2 *--------------------------------------------------------
3 *-
4 *- Purpose and Methods : Analyze scintillator information for each track
5 *-
6 *- Required Input BANKS HMS_SCIN_TOF
7 *- GEN_DATA_STRUCTURES
8 *-
9 *- Output: ABORT - success or failure
10 *- : err - reason for failure, if any
11 *-
12 * author: John Arrington
13 * created: 2/13/95
14 *
15 * h_scin_eff calculates efficiencies for the hodoscope.
16 *
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17 cdaq 1.2 * $Log: h_scin_eff.f,v $
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18 cdaq 1.7.2.1 * Revision 1.7 2002/10/02 13:42:43 saw
19 * Check that user hists are defined before filling
20 *
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21 saw 1.7 * Revision 1.6 1996/01/16 21:56:40 cdaq
22 * (JRA) Fix typos
23 *
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24 cdaq 1.6 * Revision 1.5 1995/08/31 14:44:42 cdaq
25 * (JRA) Fill dpos (pos. track - pos. hit) histograms
26 *
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27 cdaq 1.5 * Revision 1.4 1995/07/19 19:03:27 cdaq
28 * (SAW) Put nint around some things for Ultrix compat. Put h in front of
29 * various *good variables.
30 *
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31 cdaq 1.4 * Revision 1.3 1995/05/22 19:39:26 cdaq
32 * (SAW) Split gen_data_data_structures into gen, hms, sos, and coin parts"
33 *
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34 cdaq 1.3 * Revision 1.2 1995/05/11 20:27:21 cdaq
35 * (JRA) Add position calibration variables
36 *
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37 cdaq 1.2 * Revision 1.1 1995/02/23 13:31:41 cdaq
38 * Initial revision
39 *
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40 cdaq 1.1 *--------------------------------------------------------
41 IMPLICIT NONE
42 *
43 character*50 here
44 parameter (here= 'H_SCIN_EFF')
45 *
46 logical ABORT
47 character*(*) errmsg
48 *
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49 cdaq 1.3 INCLUDE 'hms_data_structures.cmn'
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50 cdaq 1.1 INCLUDE 'gen_constants.par'
51 INCLUDE 'gen_units.par'
52 include 'hms_scin_parms.cmn'
53 include 'hms_scin_tof.cmn'
54 include 'hms_statistics.cmn'
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55 cdaq 1.5 include 'hms_id_histid.cmn'
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56 cdaq 1.1
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57 cdaq 1.7.2.1 integer pln,cnt,pln2
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58 cdaq 1.1 integer hit_cnt(hnum_scin_planes)
59 integer nhit
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60 cdaq 1.5 real dist, histval
61 real hit_pos(hnum_scin_planes),hit_dist(hnum_scin_planes)
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62 cdaq 1.7.2.1 real xatback,yatback
63
64 logical good_tdc_oneside(hnum_scin_planes)
65 logical good_tdc_bothsides(hnum_scin_planes)
66 logical otherthreehit
67
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68 cdaq 1.1 save
69
70 * find counters on track, and distance from center.
71
72 if (hschi2perdeg.le.hstat_maxchisq) hstat_numevents=hstat_numevents+1
73
74 hit_pos(1)=hsx_fp + hsxp_fp*(hscin_1x_zpos+0.5*hscin_1x_dzpos)
75 hit_cnt(1)=nint((hit_pos(1)-hhodo_center(1,1))/hscin_1x_spacing)+1
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76 cdaq 1.4 hit_cnt(1)=max(min(hit_cnt(1),nint(hnum_scin_counters(1))),1)
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77 cdaq 1.1 hit_dist(1)=hit_pos(1)-(hscin_1x_spacing*(hit_cnt(1)-1)+hhodo_center(1,1))
78
79 hit_pos(2)=hsy_fp + hsyp_fp*(hscin_1y_zpos+0.5*hscin_1y_dzpos)
80 hit_cnt(2)=nint((hhodo_center(2,1)-hit_pos(2))/hscin_1y_spacing)+1
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81 cdaq 1.6 hit_cnt(2)=max(min(hit_cnt(2),nint(hnum_scin_counters(2))),1)
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82 cdaq 1.1 hit_dist(2)=hit_pos(2)-(hhodo_center(2,1)-hscin_1y_spacing*(hit_cnt(2)-1))
83
84 hit_pos(3)=hsx_fp + hsxp_fp*(hscin_2x_zpos+0.5*hscin_2x_dzpos)
85 hit_cnt(3)=nint((hit_pos(3)-hhodo_center(3,1))/hscin_2x_spacing)+1
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86 cdaq 1.6 hit_cnt(3)=max(min(hit_cnt(3),nint(hnum_scin_counters(3))),1)
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87 cdaq 1.1 hit_dist(3)=hit_pos(3)-(hscin_2x_spacing*(hit_cnt(3)-1)+hhodo_center(3,1))
88
89 hit_pos(4)=hsy_fp + hsyp_fp*(hscin_2y_zpos+0.5*hscin_2y_dzpos)
90 hit_cnt(4)=nint((hhodo_center(4,1)-hit_pos(4))/hscin_2y_spacing)+1
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91 cdaq 1.6 hit_cnt(4)=max(min(hit_cnt(4),nint(hnum_scin_counters(4))),1)
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92 cdaq 1.1 hit_dist(4)=hit_pos(4)-(hhodo_center(4,1)-hscin_2y_spacing*(hit_cnt(4)-1))
93
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94 cdaq 1.7.2.1 do pln=1,hnum_scin_planes
95 good_tdc_oneside(pln) = .false.
96 good_tdc_bothsides(pln) = .false.
97 enddo
98
99
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100 cdaq 1.5 * Fill dpos (pos. track - pos. hit) histograms
101 do nhit=1,hscin_tot_hits
102 pln=hscin_plane_num(nhit)
103 histval = hhodo_center(pln,hscin_counter_num(nhit))-hit_pos(pln)
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104 saw 1.7 if(hidscindpos(pln).gt.0) call hf1(hidscindpos(pln),histval,1.)
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105 cdaq 1.5 enddo
106
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107 cdaq 1.2 * Record position differences between track and center of scin. and
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108 cdaq 1.1 * increment 'should have hit' counters
109 do pln=1,hnum_scin_planes
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110 cdaq 1.2 cnt=hit_cnt(pln)
111 dist=hit_dist(pln)
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112 cdaq 1.5 if(abs(dist).le.hstat_slop .and. !hit in middle of scin.
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113 cdaq 1.1 & hschi2perdeg.le.hstat_maxchisq) then
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114 cdaq 1.2 hstat_trk(pln,cnt)=hstat_trk(pln,cnt)+1
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115 cdaq 1.1 endif
116 enddo
117
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118 cdaq 1.2 do nhit=1,hscin_tot_hits
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119 cdaq 1.1 cnt=hscin_counter_num(nhit)
120 pln=hscin_plane_num(nhit)
121
122 * Record the hits if track is near center of track and the chisquared of the
123 * track is good.
124 if(abs(hit_dist(pln)).le.hstat_slop .and. cnt.eq.hit_cnt(pln) .and.
125 & hschi2perdeg.le.hstat_maxchisq) then
126
127 if (hgood_tdc_pos(hsnum_fptrack,nhit)) then
128 if (hgood_tdc_neg(hsnum_fptrack,nhit)) then !both fired
129 hstat_poshit(pln,hit_cnt(pln))=hstat_poshit(pln,hit_cnt(pln))+1
130 hstat_neghit(pln,hit_cnt(pln))=hstat_neghit(pln,hit_cnt(pln))+1
131 hstat_andhit(pln,hit_cnt(pln))=hstat_andhit(pln,hit_cnt(pln))+1
132 hstat_orhit(pln,hit_cnt(pln))=hstat_orhit(pln,hit_cnt(pln))+1
133 else !pos fired
134 hstat_poshit(pln,hit_cnt(pln))=hstat_poshit(pln,hit_cnt(pln))+1
135 hstat_orhit(pln,hit_cnt(pln))=hstat_orhit(pln,hit_cnt(pln))+1
136 endif
137 else !no pos tdc
138 if (hgood_tdc_neg(hsnum_fptrack,nhit)) then !neg fired
139 hstat_neghit(pln,hit_cnt(pln))=hstat_neghit(pln,hit_cnt(pln))+1
140 cdaq 1.1 hstat_orhit(pln,hit_cnt(pln))=hstat_orhit(pln,hit_cnt(pln))+1
141 endif !if neg tdc fired.
142 endif !if pos tdc fired.
143
144 endif !if hit was on good track.
145
146
147 * Increment pos/neg/both fired. Track indepenant, so no chisquared cut (but
148 * note that only scintillators on the track are examined.
149
150 if (hgood_tdc_pos(hsnum_fptrack,nhit)) then
151 if (hgood_tdc_neg(hsnum_fptrack,nhit)) then !both fired
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152 cdaq 1.4 hbothgood(pln,cnt)=hbothgood(pln,cnt)+1
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153 cdaq 1.1 else !pos fired
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154 cdaq 1.4 hposgood(pln,cnt)=hposgood(pln,cnt)+1
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155 cdaq 1.1 endif
156 else
157 if (hgood_tdc_neg(hsnum_fptrack,nhit)) then !neg fired
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158 cdaq 1.4 hneggood(pln,cnt)=hneggood(pln,cnt)+1
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159 cdaq 1.1 endif
160 endif
161
162 enddo !loop over hsnum_pmt_hit
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163 cdaq 1.7.2.1
164 * Determine if one or both PMTs had a good tdc.
165 if (hgood_tdc_pos(hsnum_fptrack,nhit) .and.
166 & hgood_tdc_neg(hsnum_fptrack,nhit) ) good_tdc_bothsides(pln)=.true.
167 if (hgood_tdc_pos(hsnum_fptrack,nhit) .or.
168 & hgood_tdc_neg(hsnum_fptrack,nhit) ) good_tdc_oneside(pln)=.true.
169
170 enddo !loop over hsnum_pmt_hit
171
172 * For each plane, see of other 3 fired. This means that they were enough
173 * to form a 3/4 trigger, and so the fraction of times this plane fired is
174 * the plane trigger efficiency. NOTE: we only require a TDC hit, not a
175 * TDC hit within the SCIN 3/4 trigger window, so high rates will make
176 * this seem better than it is. Also, make sure we're not near the edge
177 * of the hodoscope (at the last plane), using the same hhodo_slop param. as for h_tof.f
178 * NOTE ALSO: to make this check simpler, we are assuming that all planes
179 * have identical active areas. y_scin = y_cent + y_offset, so shift track
180 * position by offset for comparing to edges.
181
182 xatback = hsx_fp+hsxp_fp*hscin_2y_zpos - hscin_2x_offset
183 yatback = hsy_fp+hsyp_fp*hscin_2y_zpos - hscin_2y_offset
184 cdaq 1.7.2.1
185 if ( xatback.lt.(hscin_2y_bot -2.*hhodo_slop(3)) .and.
186 & xatback.gt.(hscin_2y_top +2.*hhodo_slop(3)) .and.
187 & yatback.lt.(hscin_2x_left -2.*hhodo_slop(3)) .and.
188 & yatback.gt.(hscin_2x_right+2.*hhodo_slop(3))) then
189
190 do pln = 1,hnum_scin_planes
191 otherthreehit = .true.
192 do pln2 = 1,hnum_scin_planes !see of one of the others missed or pln2=pln
193 if (.not.(good_tdc_bothsides(pln2) .or. pln2.eq.pln)) then
194 otherthreehit = .false.
195 endif
196 enddo
197 if (otherthreehit) then
198 htrig_hodoshouldflag(pln) = .true.
199 if (good_tdc_bothsides(pln)) then
200 htrig_hododidflag(pln) = .true.
201 else
202 htrig_hododidflag(pln) = .false.
203 endif
204 else
205 cdaq 1.7.2.1 htrig_hodoshouldflag(pln) = .false.
206 htrig_hododidflag(pln) = .false.
207 endif
208 enddo
209
210 else !outside of fiducial region
211 do pln=1,hnum_scin_planes
212 htrig_hodoshouldflag(pln) = .false.
213 htrig_hododidflag(pln) = .false.
214 enddo
215 endif
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216 cdaq 1.1
217 return
218 end
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