/* $Id$ */
-//*-- Author: Rachid Guernane (LPCCFd)
+/// \class AliMUONGlobalTriggerBoard
+/// Global trigger implementation:
+/// - inputs are regional responses
+/// - output is a 12-bit word
+/// - 4 bits per trigger level
+/// \todo Change member functions comments in capital letters to normal text
+///
+/// \author Rachid Guernane (LPCCFd)
#include "AliMUONGlobalTriggerBoard.h"
-
+#include "AliLog.h"
#include "TBits.h"
#include <Riostream.h>
//___________________________________________
AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard()
{
+/// Default constructor
+
for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0;
}
//___________________________________________
AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(const char *name, Int_t a) : AliMUONTriggerBoard(name, a)
{
+/// Standard constructor
+
for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0;
}
+//___________________________________________
+AliMUONGlobalTriggerBoard::~AliMUONGlobalTriggerBoard()
+{
+/// Destructor
+}
+
+//___________________________________________
+void AliMUONGlobalTriggerBoard::Mask(Int_t index, UShort_t mask)
+{
+ /// MASK GLOBAL TRIGGER BOARD INPUT index WITH VALUE mask
+ if ( index>=0 && index < 16 )
+ {
+ fMask[index]=mask;
+ }
+ else
+ {
+ AliError(Form("Index %d out of bounds (max %d)",index,16));
+ }
+}
+
//___________________________________________
void AliMUONGlobalTriggerBoard::Response()
{
- Int_t t[16];
+ /// COMPUTE THE GLOBAL TRIGGER BOARD
+ /// RESPONSE ACCORDING TO THE Algo() METHOD
+// output from global trigger algorithm
+// [+, -, LS, US] * [Hpt, Lpt]
+// transformed to [usHpt, usLpt, lsHpt, lsLpt, sHpt, sLpt] according
+// to Global Trigger Unit user manual
- for (Int_t i=0;i<16;i++) t[i] = fRegionalResponse[i];
+ Int_t t[16];
+ for (Int_t i=0;i<16;i++) t[i] = fRegionalResponse[i] & fMask[i];
Int_t rank = 8;
for (Int_t j=0;j<rank;j++)
{
- UShort_t athres = Algo(t[2*j],t[2*j+1],"APT");
+ UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT");
- UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT"); lthres <<= 4;
+ UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 4;
- UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 8;
-
- t[ip] = athres | lthres | hthres;
+ t[ip] = lthres | hthres;
ip++;
}
rank /= 2;
}
-
- fResponse = t[0]; // 12-bit [H4:L4:A4]
+ UChar_t sLpt, sHpt, lsLpt, lsHpt, usLpt, usHpt;
+ sLpt = ((t[0] & 0xC) != 0);
+ sHpt = ((t[0] & 0xC0) != 0);
+ lsLpt = ((t[0] & 0x2) != 0);
+ lsHpt = ((t[0] & 0x20) != 0);
+ usLpt = ((t[0] & 0x1 ) != 0);
+ usHpt = ((t[0] & 0x10) != 0);
+
+ sHpt <<= 1;
+ lsLpt <<= 2;
+ lsHpt <<= 3;
+ usLpt <<= 4;
+ usHpt <<= 5;
+
+ fResponse = sLpt | sHpt | lsLpt | lsHpt | usLpt |usHpt;
}
//___________________________________________
UShort_t AliMUONGlobalTriggerBoard::Algo(UShort_t i, UShort_t j, char *thres)
{
- TBits a(12), b(12); a.Set(12,&i); b.Set(12,&j);
+ /// GLOBAL TRIGGER ALGORITHM
+ TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j);
TBits trg1(2), trg2(2), trg(2);
- if (!strcmp(thres,"APT"))
+ if (!strcmp(thres,"LPT"))
{
trg1[0] = a[2]; trg1[1] = a[3];
trg2[0] = b[2]; trg2[1] = b[3];
}
- else if (!strcmp(thres,"LPT"))
- {
- trg1[0] = a[6]; trg1[1] = a[7];
- trg2[0] = b[6]; trg2[1] = b[7];
- }
else
{
- trg1[0] = a[10]; trg1[1] = a[11];
- trg2[0] = b[10]; trg2[1] = b[11];
+ trg1[0] = a[6]; trg1[1] = a[7];
+ trg2[0] = b[6]; trg2[1] = b[7];
}
TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1);
- if (!strcmp(thres,"APT"))
+ if (!strcmp(thres,"LPT"))
{
trgLS1[0] = a[1]; trgUS1[0] = a[0];
trgLS2[0] = b[1]; trgUS2[0] = b[0];
}
- else if (!strcmp(thres,"LPT"))
- {
- trgLS1[0] = a[5]; trgUS1[0] = a[4];
- trgLS2[0] = b[5]; trgUS2[0] = b[4];
- }
else
{
- trgLS1[0] = a[9]; trgUS1[0] = a[8];
- trgLS2[0] = b[9]; trgUS2[0] = b[8];
+ trgLS1[0] = a[5]; trgUS1[0] = a[4];
+ trgLS2[0] = b[5]; trgUS2[0] = b[4];
}
trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
}
//___________________________________________
-void AliMUONGlobalTriggerBoard::Scan(Option_t*)
+void AliMUONGlobalTriggerBoard::Scan(Option_t*) const
{
- TBits w(12); w.Set(12,&fResponse);
+ /// PRINT GLOBAL TRIGGER OUTPUT
+ TBits w(8); w.Set(8,&fResponse);
// TRG[1:0]
// 00 noth
// 10 positive track
// 11 undef
- Int_t iSP[3] = {0,0,0}, iSM[3] = {0,0,0}, iSU[3] = {0,0,0};
+ Int_t iSP[2] = {0,0}, iSM[2] = {0,0}, iSU[2] = {0,0};
TBits a(2), n(2), p(2), u(2);
else if (a==n) iSM[1] = 1;
else if (a==u) iSU[1] = 1;
- a[0] = w[10];
- a[1] = w[11];
+ Int_t iPU[2] = {w[0],w[4]};
+ Int_t iPL[2] = {w[1],w[5]};
- if (a==p) iSP[2] = 1;
- else if (a==n) iSM[2] = 1;
- else if (a==u) iSU[2] = 1;
-
- Int_t iPU[3] = {w[0],w[4],w[8]};
- Int_t iPL[3] = {w[1],w[5],w[9]};
-
- printf("===================================================\n");
- printf(" Global Trigger output Low pt High pt All\n");
+ printf("============================================\n");
+ printf(" Global Trigger output Low pt High pt\n");
printf(" number of Single Plus :\t");
- for (Int_t i=0; i<3; i++) printf("%i\t",iSP[i]);
+ for (Int_t i=0; i<2; i++) printf("%i\t",iSP[i]);
printf("\n");
printf(" number of Single Minus :\t");
- for (Int_t i=0; i<3; i++) printf("%i\t",iSM[i]);
+ for (Int_t i=0; i<2; i++) printf("%i\t",iSM[i]);
printf("\n");
printf(" number of Single Undefined :\t");
- for (Int_t i=0; i<3; i++) printf("%i\t",iSU[i]);
+ for (Int_t i=0; i<2; i++) printf("%i\t",iSU[i]);
printf("\n");
printf(" number of UnlikeSign pair :\t");
- for (Int_t i=0; i<3; i++) printf("%i\t",iPU[i]);
+ for (Int_t i=0; i<2; i++) printf("%i\t",iPU[i]);
printf("\n");
printf(" number of LikeSign pair :\t");
- for (Int_t i=0; i<3; i++) printf("%i\t",iPL[i]);
+ for (Int_t i=0; i<2; i++) printf("%i\t",iPL[i]);
printf("\n");
printf("===================================================\n");
printf("\n");
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