1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //*-- Author: Rachid Guernane (LPCCFd)
19 // GLOBAL TRIGGER IMPLEMENTATION
20 // INPUTS ARE REGIONAL RESPONSES
21 // OUTPUT IS A 12-BIT WORD
22 // 4 BITS PER TRIGGER LEVEL
24 #include "AliMUONGlobalTriggerBoard.h"
28 #include <Riostream.h>
30 ClassImp(AliMUONGlobalTriggerBoard)
32 //___________________________________________
33 AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard()
35 for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0;
38 //___________________________________________
39 AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(const char *name, Int_t a) : AliMUONTriggerBoard(name, a)
41 for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0;
44 //___________________________________________
45 void AliMUONGlobalTriggerBoard::Mask(Int_t index, UShort_t mask)
47 // MASK GLOBAL TRIGGER BOARD INPUT index WITH VALUE mask
48 if ( index>=0 && index < 16 )
54 AliError(Form("Index %d out of bounds (max %d)",index,16));
58 //___________________________________________
59 void AliMUONGlobalTriggerBoard::Response()
61 // COMPUTE THE GLOBAL TRIGGER BOARD
62 // RESPONSE ACCORDING TO THE Algo() METHOD
65 for (Int_t i=0;i<16;i++) t[i] = fRegionalResponse[i] & fMask[i];
69 for (Int_t i=0;i<4;i++)
73 for (Int_t j=0;j<rank;j++)
75 UShort_t athres = Algo(t[2*j],t[2*j+1],"APT");
77 UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT"); lthres <<= 4;
79 UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 8;
81 t[ip] = athres | lthres | hthres;
89 fResponse = t[0]; // 12-bit [H4:L4:A4]
92 //___________________________________________
93 UShort_t AliMUONGlobalTriggerBoard::Algo(UShort_t i, UShort_t j, char *thres)
95 // GLOBAL TRIGGER ALGORITHM
96 TBits a(12), b(12); a.Set(12,&i); b.Set(12,&j);
98 TBits trg1(2), trg2(2), trg(2);
100 if (!strcmp(thres,"APT"))
102 trg1[0] = a[2]; trg1[1] = a[3];
103 trg2[0] = b[2]; trg2[1] = b[3];
105 else if (!strcmp(thres,"LPT"))
107 trg1[0] = a[6]; trg1[1] = a[7];
108 trg2[0] = b[6]; trg2[1] = b[7];
112 trg1[0] = a[10]; trg1[1] = a[11];
113 trg2[0] = b[10]; trg2[1] = b[11];
116 TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1);
118 if (!strcmp(thres,"APT"))
120 trgLS1[0] = a[1]; trgUS1[0] = a[0];
121 trgLS2[0] = b[1]; trgUS2[0] = b[0];
123 else if (!strcmp(thres,"LPT"))
125 trgLS1[0] = a[5]; trgUS1[0] = a[4];
126 trgLS2[0] = b[5]; trgUS2[0] = b[4];
130 trgLS1[0] = a[9]; trgUS1[0] = a[8];
131 trgLS2[0] = b[9]; trgUS2[0] = b[8];
134 trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
135 trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0];
137 trg[0] = trg1[0] | trg2[0];
138 trg[1] = trg1[1] | trg2[1];
153 //___________________________________________
154 void AliMUONGlobalTriggerBoard::Scan(Option_t*) const
156 // PRINT GLOBAL TRIGGER OUTPUT
157 TBits w(12); w.Set(12,&fResponse);
165 Int_t iSP[3] = {0,0,0}, iSM[3] = {0,0,0}, iSU[3] = {0,0,0};
167 TBits a(2), n(2), p(2), u(2);
171 val = 1; n.Set(2,&val);
172 val = 2; p.Set(2,&val);
173 val = 3; u.Set(2,&val);
178 if (a==p) iSP[0] = 1;
179 else if (a==n) iSM[0] = 1;
180 else if (a==u) iSU[0] = 1;
185 if (a==p) iSP[1] = 1;
186 else if (a==n) iSM[1] = 1;
187 else if (a==u) iSU[1] = 1;
192 if (a==p) iSP[2] = 1;
193 else if (a==n) iSM[2] = 1;
194 else if (a==u) iSU[2] = 1;
196 Int_t iPU[3] = {w[0],w[4],w[8]};
197 Int_t iPL[3] = {w[1],w[5],w[9]};
199 printf("===================================================\n");
200 printf(" Global Trigger output Low pt High pt All\n");
201 printf(" number of Single Plus :\t");
202 for (Int_t i=0; i<3; i++) printf("%i\t",iSP[i]);
204 printf(" number of Single Minus :\t");
205 for (Int_t i=0; i<3; i++) printf("%i\t",iSM[i]);
207 printf(" number of Single Undefined :\t");
208 for (Int_t i=0; i<3; i++) printf("%i\t",iSU[i]);
210 printf(" number of UnlikeSign pair :\t");
211 for (Int_t i=0; i<3; i++) printf("%i\t",iPU[i]);
213 printf(" number of LikeSign pair :\t");
214 for (Int_t i=0; i<3; i++) printf("%i\t",iPL[i]);
216 printf("===================================================\n");
220 ClassImp(AliMUONGlobalTriggerBoard)