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>
38 ClassImp(AliMUONRegionalTriggerBoard)
41 //___________________________________________
42 AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard()
43 : AliMUONTriggerBoard(),
46 /// Default constructor
47 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
50 //___________________________________________
51 AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard(const char *name, Int_t a)
52 : AliMUONTriggerBoard(name, a),
55 /// Standard constructor
56 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
59 //___________________________________________
60 AliMUONRegionalTriggerBoard::~AliMUONRegionalTriggerBoard()
65 //___________________________________________
66 void AliMUONRegionalTriggerBoard::Response()
68 /// response is given following the regional algorithm
69 // output from local trigger algorithm
70 // [+, -] * [Hpt, Lpt]
71 // transformed to [+, -, US, LS] * [Hpt, Lpt]
73 if ( IsNull() ) return; // Do nothing if all local responses are null
77 for (Int_t i = 0; i < 16; ++i)
79 if ((fMask >> i) & 0x1)
80 t[i] = fLocalResponse[i];
87 for (Int_t i = 0; i < 4; ++i)
91 for (Int_t j = 0; j < rank; ++j)
93 UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT",i);
95 UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT",i); hthres <<= 4;
97 t[ip] = lthres | hthres;
105 fResponse = t[0]; // 8-bit [H4:L4]
108 //___________________________________________
109 UShort_t AliMUONRegionalTriggerBoard::Algo(UShort_t i, UShort_t j, const char *thres, Int_t level)
111 /// implementation of the regional algorithm
112 /// similar to the global algorithm except for the
115 /// level = 0 a ,b = local response = Hpt (+|-) | Lpt (+|-)
116 /// level > 0 a ,b = reg response = Hpt (+|-|us|ls) | Lpt (+|-|us|ls)
118 TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j);
120 TBits trg1(2), trg2(2), trg(2);
122 if (!strcmp(thres,"LPT"))
127 trg1[0] = a[0]; trg1[1] = a[1];
128 trg2[0] = b[0]; trg2[1] = b[1];
132 trg1[0] = a[2]; trg1[1] = a[3];
133 trg2[0] = b[2]; trg2[1] = b[3];
140 trg1[0] = a[2]; trg1[1] = a[3];
141 trg2[0] = b[2]; trg2[1] = b[3];
145 trg1[0] = a[6]; trg1[1] = a[7];
146 trg2[0] = b[6]; trg2[1] = b[7];
150 TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1);
154 trgLS1[0] = trgUS1[0] = trgLS2[0] = trgUS2[0] = 0;
158 if (!strcmp(thres,"LPT"))
160 //trgLS1[0] = a[1]; trgUS1[0] = a[0];
161 //trgLS2[0] = b[1]; trgUS2[0] = b[0];
162 trgLS1[0] = a[0]; trgUS1[0] = a[1];
163 trgLS2[0] = b[0]; trgUS2[0] = b[1];
167 //trgLS1[0] = a[5]; trgUS1[0] = a[4];
168 //trgLS2[0] = b[5]; trgUS2[0] = b[4];
169 trgLS1[0] = a[4]; trgUS1[0] = a[5];
170 trgLS2[0] = b[4]; trgUS2[0] = b[5];
174 trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
175 trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0];
177 trg[0] = trg1[0] | trg2[0];
178 trg[1] = trg1[1] | trg2[1];
193 //___________________________________________
194 void AliMUONRegionalTriggerBoard::Scan(Option_t*) const
196 /// scan local board entries
198 for (Int_t i=0; i<16; i++)
201 b.Set(6,&fLocalResponse[i]);
203 cout << "Entry " << i << " is " << b << endl;
208 //___________________________________________
209 void AliMUONRegionalTriggerBoard::Mask(UShort_t mask)
216 //___________________________________________
217 Bool_t AliMUONRegionalTriggerBoard::IsNull()
219 /// Check if all local response are null
220 for (Int_t i=0; i<16; i++) {
221 if ( fLocalResponse[i] ) return kFALSE;
227 //___________________________________________
228 void AliMUONRegionalTriggerBoard::Reset()
232 for (Int_t i=0; i<16; ++i) fLocalResponse[i] = 0;