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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 | ||
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
c4ee792d | 19 | /// \class AliMUONGlobalTriggerBoard |
20 | /// Global trigger implementation: | |
21 | /// - inputs are regional responses | |
22 | /// - output is a 12-bit word | |
23 | /// - 4 bits per trigger level | |
24 | /// | |
c05673c9 | 25 | /// \author Rachid Guernane (LPCCFd), |
26 | /// Corrected by Christian Finck (Subatech) | |
3d1463c8 | 27 | //----------------------------------------------------------------------------- |
d15ca731 | 28 | |
29 | #include "AliMUONGlobalTriggerBoard.h" | |
41922e78 | 30 | #include "AliLog.h" |
d15ca731 | 31 | #include "TBits.h" |
32 | ||
33 | #include <Riostream.h> | |
34 | ||
c05673c9 | 35 | /// \cond CLASSIMP |
d15ca731 | 36 | ClassImp(AliMUONGlobalTriggerBoard) |
c05673c9 | 37 | /// \endcond |
d15ca731 | 38 | |
39 | //___________________________________________ | |
c05673c9 | 40 | AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(): AliMUONTriggerBoard() |
d15ca731 | 41 | { |
71a2d3aa | 42 | /// Default constructor |
43 | ||
d15ca731 | 44 | for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0; |
41a38dec | 45 | for (Int_t i=0;i< 4;i++) fGlobalInput[i] = 0; |
d15ca731 | 46 | } |
47 | ||
48 | //___________________________________________ | |
49 | AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(const char *name, Int_t a) : AliMUONTriggerBoard(name, a) | |
50 | { | |
71a2d3aa | 51 | /// Standard constructor |
52 | ||
d15ca731 | 53 | for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0; |
41a38dec | 54 | for (Int_t i=0;i< 4;i++) fGlobalInput[i] = 0; |
d15ca731 | 55 | } |
56 | ||
71a2d3aa | 57 | //___________________________________________ |
58 | AliMUONGlobalTriggerBoard::~AliMUONGlobalTriggerBoard() | |
59 | { | |
60 | /// Destructor | |
61 | } | |
62 | ||
41922e78 | 63 | //___________________________________________ |
41a38dec | 64 | void AliMUONGlobalTriggerBoard::Mask(Int_t index, UInt_t mask) |
41922e78 | 65 | { |
c05673c9 | 66 | /// mask global trigger board input index with value mask |
41a38dec | 67 | if ( index >= 0 && index < 4 ) |
41922e78 | 68 | { |
69 | fMask[index]=mask; | |
70 | } | |
71 | else | |
72 | { | |
41a38dec | 73 | AliError(Form("Index %d out of bounds (max %d)",index,3)); |
41922e78 | 74 | } |
75 | } | |
76 | ||
d15ca731 | 77 | //___________________________________________ |
78 | void AliMUONGlobalTriggerBoard::Response() | |
79 | { | |
c05673c9 | 80 | /// compute the global trigger board |
81 | /// response according to the algo() method | |
71a2d3aa | 82 | // output from global trigger algorithm |
254985cb | 83 | // [+, -, US, LS] * [Hpt, Lpt] |
71a2d3aa | 84 | // transformed to [usHpt, usLpt, lsHpt, lsLpt, sHpt, sLpt] according |
85 | // to Global Trigger Unit user manual | |
d15ca731 | 86 | |
8d4fefab | 87 | Int_t t[16]; |
d15ca731 | 88 | |
41a38dec | 89 | BuildGlobalInput(); |
f4e2cda2 | 90 | MaskGlobalInput(); |
41a38dec | 91 | |
c05673c9 | 92 | for (Int_t i = 0; i < 16; ++i) |
93 | { | |
41a38dec | 94 | t[i] = fRegionalResponse[i]; |
c05673c9 | 95 | } |
96 | ||
254985cb | 97 | |
d15ca731 | 98 | Int_t rank = 8; |
99 | ||
100 | for (Int_t i=0;i<4;i++) | |
101 | { | |
102 | Int_t ip = 0; | |
103 | ||
104 | for (Int_t j=0;j<rank;j++) | |
105 | { | |
ad705f30 | 106 | UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT"); |
d15ca731 | 107 | |
ad705f30 | 108 | UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 4; |
d15ca731 | 109 | |
ad705f30 | 110 | t[ip] = lthres | hthres; |
d15ca731 | 111 | |
112 | ip++; | |
113 | } | |
114 | ||
115 | rank /= 2; | |
116 | } | |
8d4fefab | 117 | UChar_t sLpt, sHpt, lsLpt, lsHpt, usLpt, usHpt; |
118 | sLpt = ((t[0] & 0xC) != 0); | |
119 | sHpt = ((t[0] & 0xC0) != 0); | |
254985cb | 120 | lsLpt = ((t[0] & 0x1) != 0); |
254985cb | 121 | lsHpt = ((t[0] & 0x10) != 0); |
254985cb | 122 | usLpt = ((t[0] & 0x2 ) != 0); |
254985cb | 123 | usHpt = ((t[0] & 0x20) != 0); |
8d4fefab | 124 | |
125 | sHpt <<= 1; | |
126 | lsLpt <<= 2; | |
127 | lsHpt <<= 3; | |
128 | usLpt <<= 4; | |
129 | usHpt <<= 5; | |
130 | ||
131 | fResponse = sLpt | sHpt | lsLpt | lsHpt | usLpt |usHpt; | |
254985cb | 132 | |
133 | ||
d15ca731 | 134 | } |
135 | ||
136 | //___________________________________________ | |
a6e0ebfe | 137 | UShort_t AliMUONGlobalTriggerBoard::Algo(UShort_t i, UShort_t j, const char *thres) |
d15ca731 | 138 | { |
254985cb | 139 | /// global trigger algorithm |
140 | /// a ,b = reg response = Hpt (+|-|us|ls) | Lpt (+|-|us|ls) | |
141 | ||
ad705f30 | 142 | TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j); |
d15ca731 | 143 | |
144 | TBits trg1(2), trg2(2), trg(2); | |
145 | ||
ad705f30 | 146 | if (!strcmp(thres,"LPT")) |
d15ca731 | 147 | { |
148 | trg1[0] = a[2]; trg1[1] = a[3]; | |
149 | trg2[0] = b[2]; trg2[1] = b[3]; | |
150 | } | |
d15ca731 | 151 | else |
152 | { | |
ad705f30 | 153 | trg1[0] = a[6]; trg1[1] = a[7]; |
154 | trg2[0] = b[6]; trg2[1] = b[7]; | |
d15ca731 | 155 | } |
156 | ||
157 | TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1); | |
158 | ||
ad705f30 | 159 | if (!strcmp(thres,"LPT")) |
d15ca731 | 160 | { |
254985cb | 161 | trgLS1[0] = a[0]; trgUS1[0] = a[1]; |
162 | trgLS2[0] = b[0]; trgUS2[0] = b[1]; | |
d15ca731 | 163 | } |
d15ca731 | 164 | else |
165 | { | |
254985cb | 166 | trgLS1[0] = a[4]; trgUS1[0] = a[5]; |
167 | trgLS2[0] = b[4]; trgUS2[0] = b[5]; | |
d15ca731 | 168 | } |
169 | ||
170 | trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0]; | |
171 | trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0]; | |
172 | ||
173 | trg[0] = trg1[0] | trg2[0]; | |
174 | trg[1] = trg1[1] | trg2[1]; | |
175 | ||
176 | TBits v(4); | |
177 | ||
254985cb | 178 | v[0] = trgLS[0]; |
179 | v[1] = trgUS[0]; | |
d15ca731 | 180 | v[2] = trg[0]; |
181 | v[3] = trg[1]; | |
182 | ||
183 | UShort_t rv = 0; | |
184 | v.Get(&rv); | |
185 | ||
186 | return rv; | |
187 | } | |
188 | ||
41a38dec | 189 | //___________________________________________ |
190 | void AliMUONGlobalTriggerBoard::BuildGlobalInput() | |
191 | { | |
192 | /// build the 4 words (32bits) global input from the regional responses | |
193 | /// the order of regional responses is: | |
194 | /// 1R, 2R, 2-3R, 3R, 4R, 5R, 6R, 7R, 1L, 2L, 2-3L, 3L, 4L, 5L, 6L, 7L | |
195 | ||
196 | for (Int_t i=0;i< 4;i++) fGlobalInput[i] = 0; | |
197 | ||
f4e2cda2 | 198 | UShort_t regRespInv; |
199 | TBits rs(8), rsi(8); | |
41a38dec | 200 | for (Int_t iReg = 0; iReg < 16; iReg++) { |
f4e2cda2 | 201 | |
202 | // invert bit in regional response | |
203 | rs.Set(8,&fRegionalResponse[iReg]); | |
204 | for (Int_t i = 0; i < 4; i++) { | |
205 | rsi[2*i] = rs[2*i+1]; | |
206 | rsi[2*i+1] = rs[2*i]; | |
207 | } | |
208 | regRespInv = 0; | |
209 | rsi.Get(®RespInv); | |
210 | ||
41a38dec | 211 | if (iReg < 8) { // right |
212 | // Lpt word | |
f4e2cda2 | 213 | fGlobalInput[0] |= (regRespInv & 0x0F) << (4*iReg); |
41a38dec | 214 | // Hpt word |
f4e2cda2 | 215 | fGlobalInput[2] |= ((regRespInv & 0xF0) >> 4) << (4*iReg); |
41a38dec | 216 | } else { // left |
217 | // Lpt word | |
f4e2cda2 | 218 | fGlobalInput[1] |= (regRespInv & 0x0F) << (4*(iReg-8)); |
41a38dec | 219 | // Hpt word |
f4e2cda2 | 220 | fGlobalInput[3] |= ((regRespInv & 0xF0) >> 4) << (4*(iReg-8)); |
41a38dec | 221 | } |
222 | ||
223 | } | |
224 | ||
225 | } | |
226 | ||
227 | //___________________________________________ | |
f4e2cda2 | 228 | void AliMUONGlobalTriggerBoard::MaskGlobalInput() |
41a38dec | 229 | { |
230 | /// Apply masks to global input and recalculate regional inputs before | |
231 | /// applying the global response | |
232 | ||
f4e2cda2 | 233 | UShort_t regRespInv; |
234 | TBits rs(8), rsi(8); | |
235 | ||
236 | // global input with masks applied | |
41a38dec | 237 | UInt_t gitmp[4]; |
238 | ||
239 | for (Int_t i = 0; i < 4; i++) { | |
240 | gitmp[i] = fGlobalInput[i]; | |
241 | gitmp[i] &= fMask[i]; | |
242 | } | |
243 | ||
244 | for (Int_t iReg = 0; iReg < 16; iReg++) { | |
245 | fRegionalResponse[iReg] = 0; | |
246 | if (iReg < 8) { // right | |
247 | // Lpt | |
248 | fRegionalResponse[iReg] |= (gitmp[0] >> (4*iReg)) & 0xF; | |
249 | // Hpt | |
250 | fRegionalResponse[iReg] |= ((gitmp[2] >> (4*iReg)) & 0xF) << 4; | |
251 | } else { // left | |
252 | // Lpt | |
253 | fRegionalResponse[iReg] |= (gitmp[1] >> (4*(iReg-8))) & 0xF; | |
254 | // Hpt | |
255 | fRegionalResponse[iReg] |= ((gitmp[3] >> (4*(iReg-8))) & 0xF) << 4; | |
256 | } | |
f4e2cda2 | 257 | // invert bit in regional response |
258 | rs.Set(8,&fRegionalResponse[iReg]); | |
259 | for (Int_t i = 0; i < 4; i++) { | |
260 | rsi[2*i] = rs[2*i+1]; | |
261 | rsi[2*i+1] = rs[2*i]; | |
262 | } | |
263 | regRespInv = 0; | |
264 | rsi.Get(®RespInv); | |
265 | fRegionalResponse[iReg] = regRespInv; | |
41a38dec | 266 | } |
267 | ||
268 | } | |
269 | ||
d15ca731 | 270 | //___________________________________________ |
edd00c2d | 271 | void AliMUONGlobalTriggerBoard::Scan(Option_t*) const |
d15ca731 | 272 | { |
c05673c9 | 273 | /// print global trigger output |
bf309e6d | 274 | TBits w(6); w.Set(6,&fResponse); |
d15ca731 | 275 | |
276 | // TRG[1:0] | |
277 | // 00 noth | |
278 | // 01 negative track | |
279 | // 10 positive track | |
280 | // 11 undef | |
281 | ||
bf309e6d | 282 | Int_t iS[2] = {0,0}; |
d15ca731 | 283 | |
bf309e6d | 284 | iS[0] = (Int_t)w.TestBitNumber(0); |
285 | iS[1] = (Int_t)w.TestBitNumber(1); | |
d15ca731 | 286 | |
bf309e6d | 287 | Int_t iPU[2] = {w[4],w[5]}; |
288 | Int_t iPL[2] = {w[2],w[3]}; | |
d15ca731 | 289 | |
ad705f30 | 290 | printf("============================================\n"); |
291 | printf(" Global Trigger output Low pt High pt\n"); | |
bf309e6d | 292 | printf(" number of Single :\t"); |
293 | for (Int_t i=0; i<2; i++) printf("%i\t",iS[i]); | |
d15ca731 | 294 | printf("\n"); |
295 | printf(" number of UnlikeSign pair :\t"); | |
ad705f30 | 296 | for (Int_t i=0; i<2; i++) printf("%i\t",iPU[i]); |
d15ca731 | 297 | printf("\n"); |
298 | printf(" number of LikeSign pair :\t"); | |
ad705f30 | 299 | for (Int_t i=0; i<2; i++) printf("%i\t",iPL[i]); |
d15ca731 | 300 | printf("\n"); |
301 | printf("===================================================\n"); | |
302 | printf("\n"); | |
303 | } | |
304 |