[u/mrichter/AliRoot.git] / MUON / AliMUONGlobalTriggerBoard.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//-----------------------------------------------------------------------------
/// \class AliMUONGlobalTriggerBoard
/// Global trigger implementation:
/// - inputs are regional responses
/// - output is a 12-bit word
/// - 4 bits per trigger level
///
/// \author Rachid Guernane (LPCCFd), 
/// Corrected by Christian Finck (Subatech)
//-----------------------------------------------------------------------------

#include "AliMUONGlobalTriggerBoard.h"
#include "AliLog.h"
#include "TBits.h"

#include <Riostream.h>

/// \cond CLASSIMP
ClassImp(AliMUONGlobalTriggerBoard)
/// \endcond

//___________________________________________
AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(): AliMUONTriggerBoard()
{
/// Default constructor

   for (Int_t i=0;i<16;i++) fRegionalResponse[i] = 0;
   for (Int_t i=0;i< 4;i++) fGlobalInput[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;
   for (Int_t i=0;i< 4;i++) fGlobalInput[i] = 0;
}

//___________________________________________
AliMUONGlobalTriggerBoard::~AliMUONGlobalTriggerBoard()
{
/// Destructor
}

//___________________________________________
void AliMUONGlobalTriggerBoard::Mask(Int_t index, UInt_t mask)
{
  /// mask global trigger board input index with value mask
  if ( index >= 0 && index < 4 ) 
  {
    fMask[index]=mask;
  }
  else
  {
    AliError(Form("Index %d out of bounds (max %d)",index,3));
  }  
}

//___________________________________________
void AliMUONGlobalTriggerBoard::Response()
{
   /// compute the global trigger board
   /// response according to the algo() method
// output from global trigger algorithm
// [+, -, US, LS] * [Hpt, Lpt]
// transformed to [usHpt, usLpt, lsHpt, lsLpt, sHpt, sLpt] according
// to Global Trigger Unit user manual

   Int_t t[16];

   BuildGlobalInput();
   MaskGlobalInput();

   for (Int_t i = 0; i < 16; ++i) 
   {
     t[i] = fRegionalResponse[i];
   }
   
   
   Int_t rank = 8;

   for (Int_t i=0;i<4;i++)
   {
      Int_t ip = 0;
      
      for (Int_t j=0;j<rank;j++)
      {
         UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT");

         UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT"); hthres <<= 4;

         t[ip] = lthres | hthres;

         ip++;
      }
      
      rank /= 2; 
   }
   UChar_t sLpt, sHpt, lsLpt, lsHpt, usLpt, usHpt;
   sLpt  = ((t[0] & 0xC)  != 0);
   sHpt  = ((t[0] & 0xC0) != 0);
   lsLpt = ((t[0] & 0x1)  != 0);
   lsHpt = ((t[0] & 0x10) != 0);
   usLpt = ((t[0] & 0x2 ) != 0);
   usHpt = ((t[0] & 0x20) != 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, const char *thres)
{
/// global trigger algorithm
///   a ,b = reg  response  =  Hpt (+|-|us|ls) |  Lpt (+|-|us|ls)  
                           
   TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j);

   TBits trg1(2), trg2(2), trg(2);

   if (!strcmp(thres,"LPT"))
   {
      trg1[0] = a[2]; trg1[1] = a[3]; 
      trg2[0] = b[2]; trg2[1] = b[3];
   }
   else
   {
      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,"LPT"))
   {
      trgLS1[0] = a[0]; trgUS1[0] = a[1]; 
      trgLS2[0] = b[0]; trgUS2[0] = b[1];
   }
   else
   {
      trgLS1[0] = a[4]; trgUS1[0] = a[5]; 
      trgLS2[0] = b[4]; trgUS2[0] = b[5];         
   }

   trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
   trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0];
   
   trg[0] = trg1[0] | trg2[0];
   trg[1] = trg1[1] | trg2[1];
   
   TBits v(4);
   
   v[0] = trgLS[0];
   v[1] = trgUS[0];
   v[2] = trg[0];
   v[3] = trg[1];

   UShort_t rv = 0;
   v.Get(&rv);
   
   return rv;
}

//___________________________________________
void AliMUONGlobalTriggerBoard::BuildGlobalInput()
{
  /// build the 4 words (32bits) global input from the regional responses
  /// the order of regional responses is:
  /// 1R, 2R, 2-3R, 3R, 4R, 5R, 6R, 7R, 1L, 2L, 2-3L, 3L, 4L, 5L, 6L, 7L

  for (Int_t i=0;i< 4;i++) fGlobalInput[i] = 0;

  UShort_t regRespInv;
  TBits rs(8), rsi(8);
  for (Int_t iReg = 0; iReg < 16; iReg++) {

    // invert bit in regional response
    rs.Set(8,&fRegionalResponse[iReg]);
    for (Int_t i = 0; i < 4; i++) {
      rsi[2*i]   = rs[2*i+1];
      rsi[2*i+1] = rs[2*i];
    }
    regRespInv = 0;
    rsi.Get(&regRespInv);

    if (iReg < 8) {    // right
      // Lpt word
      fGlobalInput[0] |=  (regRespInv & 0x0F)       << (4*iReg);
      // Hpt word
      fGlobalInput[2] |= ((regRespInv & 0xF0) >> 4) << (4*iReg);
    } else {           // left
      // Lpt word
      fGlobalInput[1] |=  (regRespInv & 0x0F)       << (4*(iReg-8));
      // Hpt word
      fGlobalInput[3] |= ((regRespInv & 0xF0) >> 4) << (4*(iReg-8));
    }

  }

}

//___________________________________________
void AliMUONGlobalTriggerBoard::MaskGlobalInput()
{
  /// Apply masks to global input and recalculate regional inputs before
  /// applying the global response

  UShort_t regRespInv;
  TBits rs(8), rsi(8);

  // global input with masks applied
  UInt_t gitmp[4];

  for (Int_t i = 0; i < 4; i++) {
    gitmp[i] = fGlobalInput[i];
    gitmp[i] &= fMask[i];
  }

  for (Int_t iReg = 0; iReg < 16; iReg++) {
    fRegionalResponse[iReg] = 0;
    if (iReg < 8) {    // right
      // Lpt
      fRegionalResponse[iReg] |=  (gitmp[0] >> (4*iReg))     & 0xF;
      // Hpt
      fRegionalResponse[iReg] |= ((gitmp[2] >> (4*iReg))     & 0xF) << 4;
    } else {           // left
      // Lpt
      fRegionalResponse[iReg] |=  (gitmp[1] >> (4*(iReg-8))) & 0xF;
      // Hpt
      fRegionalResponse[iReg] |= ((gitmp[3] >> (4*(iReg-8))) & 0xF) << 4;
    }
    // invert bit in regional response
    rs.Set(8,&fRegionalResponse[iReg]);
    for (Int_t i = 0; i < 4; i++) {
      rsi[2*i]   = rs[2*i+1];
      rsi[2*i+1] = rs[2*i];
    }
    regRespInv = 0;
    rsi.Get(&regRespInv);
    fRegionalResponse[iReg] = regRespInv;
  }

}

//___________________________________________
void AliMUONGlobalTriggerBoard::Scan(Option_t*) const
{
  /// print global trigger output 
  TBits w(6); w.Set(6,&fResponse);

// TRG[1:0]
// 00 noth
// 01 negative track
// 10 positive track
// 11 undef

   Int_t iS[2] = {0,0};

   iS[0] = (Int_t)w.TestBitNumber(0);
   iS[1] = (Int_t)w.TestBitNumber(1);

   Int_t iPU[2] = {w[4],w[5]};
   Int_t iPL[2] = {w[2],w[3]};

   printf("============================================\n");
   printf(" Global Trigger output       Low pt  High pt\n");
   printf(" number of Single           :\t");
   for (Int_t i=0; i<2; i++) printf("%i\t",iS[i]);
   printf("\n");
   printf(" number of UnlikeSign pair  :\t"); 
   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<2; i++) printf("%i\t",iPL[i]);
   printf("\n");
   printf("===================================================\n");
   printf("\n");
}
Commit	Line	Data
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),
c05673c9	26	/// Corrected by Christian Finck (Subatech)
3d1463c8	27	//-----------------------------------------------------------------------------
d15ca731	28
d15ca731	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
d15ca731	39	//___________________________________________
c05673c9	40	AliMUONGlobalTriggerBoard::AliMUONGlobalTriggerBoard(): AliMUONTriggerBoard()
d15ca731	41	{
71a2d3aa	42	/// Default constructor
71a2d3aa	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
71a2d3aa	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	}
d15ca731	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
c05673c9	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
71a2d3aa	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)
c05673c9	93	{
41a38dec	94	t[i] = fRegionalResponse[i];
c05673c9	95	}
c05673c9	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[2j],t[2j+1],"LPT");
d15ca731	107
ad705f30	108	UShort_t hthres = Algo(t[2j],t[2j+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
254985cb	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
d15ca731	152	{
ad705f30	153	trg1[0] = a[6]; trg1[1] = a[7];
ad705f30	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];
254985cb	162	trgLS2[0] = b[0]; trgUS2[0] = b[1];
d15ca731	163	}
d15ca731	164	else
d15ca731	165	{
254985cb	166	trgLS1[0] = a[4]; trgUS1[0] = a[5];
254985cb	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];
254985cb	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;
f4e2cda2	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[2i] = rs[2i+1];
	206	rsi[2i+1] = rs[2i];
	207	}
	208	regRespInv = 0;
	209	rsi.Get(&regRespInv);
	210
41a38dec	211	if (iReg < 8) { // right
41a38dec	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
41a38dec	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[2i] = rs[2i+1];
	261	rsi[2i+1] = rs[2i];
	262	}
	263	regRespInv = 0;
	264	rsi.Get(&regRespInv);
	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);
bf309e6d	285	iS[1] = (Int_t)w.TestBitNumber(1);
d15ca731	286
bf309e6d	287	Int_t iPU[2] = {w[4],w[5]};
bf309e6d	288	Int_t iPL[2] = {w[2],w[3]};
d15ca731	289
ad705f30	290	printf("============================================\n");
ad705f30	291	printf(" Global Trigger output Low pt High pt\n");
bf309e6d	292	printf(" number of Single :\t");
bf309e6d	293	for (Int_t i=0; i<2; i++) printf("%i\t",iS[i]);
d15ca731	294	printf("\n");
d15ca731	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");
d15ca731	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