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d15ca731 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
c4ee792d | 18 | /// \class AliMUONGlobalTriggerBoard |
19 | /// Global trigger implementation: | |
20 | /// - inputs are regional responses | |
21 | /// - output is a 12-bit word | |
22 | /// - 4 bits per trigger level | |
71a2d3aa | 23 | /// \todo Change member functions comments in capital letters to normal text |
c4ee792d | 24 | /// |
25 | /// \author Rachid Guernane (LPCCFd) | |
d15ca731 | 26 | |
27 | #include "AliMUONGlobalTriggerBoard.h" | |
41922e78 | 28 | #include "AliLog.h" |
d15ca731 | 29 | #include "TBits.h" |
30 | ||
31 | #include <Riostream.h> | |
32 | ||
33 | ClassImp(AliMUONGlobalTriggerBoard) | |
34 | ||
35 | //___________________________________________ | |
36 | AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard() | |
37 | { | |
71a2d3aa | 38 | /// Default constructor |
39 | ||
d15ca731 | 40 | for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0; |
41 | } | |
42 | ||
43 | //___________________________________________ | |
44 | AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(const char *name, Int_t a) : AliMUONTriggerBoard(name, a) | |
45 | { | |
71a2d3aa | 46 | /// Standard constructor |
47 | ||
d15ca731 | 48 | for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0; |
49 | } | |
50 | ||
71a2d3aa | 51 | //___________________________________________ |
52 | AliMUONGlobalTriggerBoard::~AliMUONGlobalTriggerBoard() | |
53 | { | |
54 | /// Destructor | |
55 | } | |
56 | ||
41922e78 | 57 | //___________________________________________ |
58 | void AliMUONGlobalTriggerBoard::Mask(Int_t index, UShort_t mask) | |
59 | { | |
71a2d3aa | 60 | /// MASK GLOBAL TRIGGER BOARD INPUT index WITH VALUE mask |
41922e78 | 61 | if ( index>=0 && index < 16 ) |
62 | { | |
63 | fMask[index]=mask; | |
64 | } | |
65 | else | |
66 | { | |
67 | AliError(Form("Index %d out of bounds (max %d)",index,16)); | |
68 | } | |
69 | } | |
70 | ||
d15ca731 | 71 | //___________________________________________ |
72 | void AliMUONGlobalTriggerBoard::Response() | |
73 | { | |
71a2d3aa | 74 | /// COMPUTE THE GLOBAL TRIGGER BOARD |
75 | /// RESPONSE ACCORDING TO THE Algo() METHOD | |
76 | // output from global trigger algorithm | |
77 | // [+, -, LS, US] * [Hpt, Lpt] | |
78 | // transformed to [usHpt, usLpt, lsHpt, lsLpt, sHpt, sLpt] according | |
79 | // to Global Trigger Unit user manual | |
d15ca731 | 80 | |
8d4fefab | 81 | Int_t t[16]; |
41922e78 | 82 | for (Int_t i=0;i<16;i++) t[i] = fRegionalResponse[i] & fMask[i]; |
d15ca731 | 83 | |
84 | Int_t rank = 8; | |
85 | ||
86 | for (Int_t i=0;i<4;i++) | |
87 | { | |
88 | Int_t ip = 0; | |
89 | ||
90 | for (Int_t j=0;j<rank;j++) | |
91 | { | |
ad705f30 | 92 | UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT"); |
d15ca731 | 93 | |
ad705f30 | 94 | UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 4; |
d15ca731 | 95 | |
ad705f30 | 96 | t[ip] = lthres | hthres; |
d15ca731 | 97 | |
98 | ip++; | |
99 | } | |
100 | ||
101 | rank /= 2; | |
102 | } | |
8d4fefab | 103 | UChar_t sLpt, sHpt, lsLpt, lsHpt, usLpt, usHpt; |
104 | sLpt = ((t[0] & 0xC) != 0); | |
105 | sHpt = ((t[0] & 0xC0) != 0); | |
106 | lsLpt = ((t[0] & 0x2) != 0); | |
107 | lsHpt = ((t[0] & 0x20) != 0); | |
108 | usLpt = ((t[0] & 0x1 ) != 0); | |
109 | usHpt = ((t[0] & 0x10) != 0); | |
110 | ||
111 | sHpt <<= 1; | |
112 | lsLpt <<= 2; | |
113 | lsHpt <<= 3; | |
114 | usLpt <<= 4; | |
115 | usHpt <<= 5; | |
116 | ||
117 | fResponse = sLpt | sHpt | lsLpt | lsHpt | usLpt |usHpt; | |
d15ca731 | 118 | } |
119 | ||
120 | //___________________________________________ | |
121 | UShort_t AliMUONGlobalTriggerBoard::Algo(UShort_t i, UShort_t j, char *thres) | |
122 | { | |
71a2d3aa | 123 | /// GLOBAL TRIGGER ALGORITHM |
ad705f30 | 124 | TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j); |
d15ca731 | 125 | |
126 | TBits trg1(2), trg2(2), trg(2); | |
127 | ||
ad705f30 | 128 | if (!strcmp(thres,"LPT")) |
d15ca731 | 129 | { |
130 | trg1[0] = a[2]; trg1[1] = a[3]; | |
131 | trg2[0] = b[2]; trg2[1] = b[3]; | |
132 | } | |
d15ca731 | 133 | else |
134 | { | |
ad705f30 | 135 | trg1[0] = a[6]; trg1[1] = a[7]; |
136 | trg2[0] = b[6]; trg2[1] = b[7]; | |
d15ca731 | 137 | } |
138 | ||
139 | TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1); | |
140 | ||
ad705f30 | 141 | if (!strcmp(thres,"LPT")) |
d15ca731 | 142 | { |
143 | trgLS1[0] = a[1]; trgUS1[0] = a[0]; | |
144 | trgLS2[0] = b[1]; trgUS2[0] = b[0]; | |
145 | } | |
d15ca731 | 146 | else |
147 | { | |
ad705f30 | 148 | trgLS1[0] = a[5]; trgUS1[0] = a[4]; |
149 | trgLS2[0] = b[5]; trgUS2[0] = b[4]; | |
d15ca731 | 150 | } |
151 | ||
152 | trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0]; | |
153 | trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0]; | |
154 | ||
155 | trg[0] = trg1[0] | trg2[0]; | |
156 | trg[1] = trg1[1] | trg2[1]; | |
157 | ||
158 | TBits v(4); | |
159 | ||
160 | v[0] = trgUS[0]; | |
161 | v[1] = trgLS[0]; | |
162 | v[2] = trg[0]; | |
163 | v[3] = trg[1]; | |
164 | ||
165 | UShort_t rv = 0; | |
166 | v.Get(&rv); | |
167 | ||
168 | return rv; | |
169 | } | |
170 | ||
171 | //___________________________________________ | |
edd00c2d | 172 | void AliMUONGlobalTriggerBoard::Scan(Option_t*) const |
d15ca731 | 173 | { |
71a2d3aa | 174 | /// PRINT GLOBAL TRIGGER OUTPUT |
ad705f30 | 175 | TBits w(8); w.Set(8,&fResponse); |
d15ca731 | 176 | |
177 | // TRG[1:0] | |
178 | // 00 noth | |
179 | // 01 negative track | |
180 | // 10 positive track | |
181 | // 11 undef | |
182 | ||
ad705f30 | 183 | Int_t iSP[2] = {0,0}, iSM[2] = {0,0}, iSU[2] = {0,0}; |
d15ca731 | 184 | |
185 | TBits a(2), n(2), p(2), u(2); | |
186 | ||
187 | UShort_t val; | |
188 | ||
189 | val = 1; n.Set(2,&val); | |
190 | val = 2; p.Set(2,&val); | |
191 | val = 3; u.Set(2,&val); | |
192 | ||
193 | a[0] = w[2]; | |
194 | a[1] = w[3]; | |
195 | ||
196 | if (a==p) iSP[0] = 1; | |
197 | else if (a==n) iSM[0] = 1; | |
198 | else if (a==u) iSU[0] = 1; | |
199 | ||
200 | a[0] = w[6]; | |
201 | a[1] = w[7]; | |
202 | ||
203 | if (a==p) iSP[1] = 1; | |
204 | else if (a==n) iSM[1] = 1; | |
205 | else if (a==u) iSU[1] = 1; | |
206 | ||
ad705f30 | 207 | Int_t iPU[2] = {w[0],w[4]}; |
208 | Int_t iPL[2] = {w[1],w[5]}; | |
d15ca731 | 209 | |
ad705f30 | 210 | printf("============================================\n"); |
211 | printf(" Global Trigger output Low pt High pt\n"); | |
d15ca731 | 212 | printf(" number of Single Plus :\t"); |
ad705f30 | 213 | for (Int_t i=0; i<2; i++) printf("%i\t",iSP[i]); |
d15ca731 | 214 | printf("\n"); |
215 | printf(" number of Single Minus :\t"); | |
ad705f30 | 216 | for (Int_t i=0; i<2; i++) printf("%i\t",iSM[i]); |
d15ca731 | 217 | printf("\n"); |
218 | printf(" number of Single Undefined :\t"); | |
ad705f30 | 219 | for (Int_t i=0; i<2; i++) printf("%i\t",iSU[i]); |
d15ca731 | 220 | printf("\n"); |
221 | printf(" number of UnlikeSign pair :\t"); | |
ad705f30 | 222 | for (Int_t i=0; i<2; i++) printf("%i\t",iPU[i]); |
d15ca731 | 223 | printf("\n"); |
224 | printf(" number of LikeSign pair :\t"); | |
ad705f30 | 225 | for (Int_t i=0; i<2; i++) printf("%i\t",iPL[i]); |
d15ca731 | 226 | printf("\n"); |
227 | printf("===================================================\n"); | |
228 | printf("\n"); | |
229 | } | |
230 | ||
231 | ClassImp(AliMUONGlobalTriggerBoard) |