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 //-----------------------------------------------------------------------------
19 /// \class AliMUONRegionalTriggerBoard
20 /// Dimuon regional trigger implementation:
21 /// - entry are local board responses
22 /// - output is 12-bit word
23 /// - algorithm is similar to the global one
25 /// \author Rachid Guernane (LPCCFd)
26 /// Corrected by Christian Finck (Subatech)
27 //-----------------------------------------------------------------------------
29 #include "AliMUONRegionalTriggerBoard.h"
35 #include <Riostream.h>
40 ClassImp(AliMUONRegionalTriggerBoard)
43 //___________________________________________
44 AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard()
45 : AliMUONTriggerBoard(),
48 /// Default constructor
49 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
52 //___________________________________________
53 AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard(const char *name, Int_t a)
54 : AliMUONTriggerBoard(name, a),
57 /// Standard constructor
58 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
61 //___________________________________________
62 AliMUONRegionalTriggerBoard::~AliMUONRegionalTriggerBoard()
67 //___________________________________________
68 void AliMUONRegionalTriggerBoard::Response()
70 /// response is given following the regional algorithm
71 // output from local trigger algorithm
72 // [+, -] * [Hpt, Lpt]
73 // transformed to [+, -, US, LS] * [Hpt, Lpt]
75 if ( IsNull() ) return; // Do nothing if all local responses are null
79 for (Int_t i = 0; i < 16; ++i)
81 if ((fMask >> i) & 0x1)
82 t[i] = fLocalResponse[i];
89 for (Int_t i = 0; i < 4; ++i)
93 for (Int_t j = 0; j < rank; ++j)
95 UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT",i);
97 UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT",i); hthres <<= 4;
99 t[ip] = lthres | hthres;
107 fResponse = t[0]; // 8-bit [H4:L4]
110 //___________________________________________
111 UShort_t AliMUONRegionalTriggerBoard::Algo(UShort_t i, UShort_t j, const char *thres, Int_t level)
113 /// implementation of the regional algorithm
114 /// similar to the global algorithm except for the
117 /// level = 0 a ,b = local response = Hpt (+|-) | Lpt (+|-)
118 /// level > 0 a ,b = reg response = Hpt (+|-|us|ls) | Lpt (+|-|us|ls)
120 TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j);
122 TBits trg1(2), trg2(2), trg(2);
124 if (!strcmp(thres,"LPT"))
129 trg1[0] = a[0]; trg1[1] = a[1];
130 trg2[0] = b[0]; trg2[1] = b[1];
134 trg1[0] = a[2]; trg1[1] = a[3];
135 trg2[0] = b[2]; trg2[1] = b[3];
142 trg1[0] = a[2]; trg1[1] = a[3];
143 trg2[0] = b[2]; trg2[1] = b[3];
147 trg1[0] = a[6]; trg1[1] = a[7];
148 trg2[0] = b[6]; trg2[1] = b[7];
152 TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1);
156 trgLS1[0] = trgUS1[0] = trgLS2[0] = trgUS2[0] = 0;
160 if (!strcmp(thres,"LPT"))
162 //trgLS1[0] = a[1]; trgUS1[0] = a[0];
163 //trgLS2[0] = b[1]; trgUS2[0] = b[0];
164 trgLS1[0] = a[0]; trgUS1[0] = a[1];
165 trgLS2[0] = b[0]; trgUS2[0] = b[1];
169 //trgLS1[0] = a[5]; trgUS1[0] = a[4];
170 //trgLS2[0] = b[5]; trgUS2[0] = b[4];
171 trgLS1[0] = a[4]; trgUS1[0] = a[5];
172 trgLS2[0] = b[4]; trgUS2[0] = b[5];
176 trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
177 trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0];
179 trg[0] = trg1[0] | trg2[0];
180 trg[1] = trg1[1] | trg2[1];
195 //___________________________________________
196 void AliMUONRegionalTriggerBoard::Scan(Option_t*) const
198 /// scan local board entries
200 for (Int_t i=0; i<16; i++)
203 b.Set(6,&fLocalResponse[i]);
205 cout << "Entry " << i << " is " << b << endl;
210 //___________________________________________
211 void AliMUONRegionalTriggerBoard::Mask(UShort_t mask)
218 //___________________________________________
219 Bool_t AliMUONRegionalTriggerBoard::IsNull()
221 /// Check if all local response are null
222 for (Int_t i=0; i<16; i++) {
223 if ( fLocalResponse[i] ) return kFALSE;
229 //___________________________________________
230 void AliMUONRegionalTriggerBoard::Reset()
234 for (Int_t i=0; i<16; ++i) fLocalResponse[i] = 0;