[u/mrichter/AliRoot.git] / EMCAL / AliEMCALDigitizer.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 performs digitization of Summable digits 
//  
// In addition it performs mixing of summable digits from different events.
//
// For each event two branches are created in TreeD:
//   "EMCAL" - list of digits
//   "AliEMCALDigitizer" - AliEMCALDigitizer with all parameters used in digitization
//
// Note, that one cset title for new digits branch, and repeat digitization with
// another set of parameters.
//
// Examples of use:
// root[0] AliEMCALDigitizer * d = new AliEMCALDigitizer() ;
// root[1] d->ExecuteTask()             
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
//                       //Digitizes SDigitis in all events found in file galice.root 
//
// root[2] AliEMCALDigitizer * d1 = new AliEMCALDigitizer("galice1.root") ;  
//                       // Will read sdigits from galice1.root
// root[3] d1->MixWith("galice2.root")       
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
//                       // Reads another portion of sdigits from galice2.root
// root[3] d1->MixWith("galice3.root")       
//                       // Reads another portion of sdigits from galice3.root
// root[4] d->ExecuteTask("deb timing")    
//                       // Reads SDigits from files galice1.root, galice2.root ....
//                       // mixes them and stores produced Digits in file galice1.root          
//                       // deb - prints number of produced digits
//                       // deb all - prints list of produced digits
//                       // timing  - prints time used for digitization
////////////////////////////////////////////////////////////////////////////////////
//
//*-- Author: Sahal Yacoob (LBL)
// based on : AliEMCALDigitizer
// Modif: 
//  August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
Commit	Line	Data
61e0abb5	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
	18	//_________________________________________________________________________
ffa6d63b	19	//
61e0abb5	20	//////////////////////////////////////////////////////////////////////////////
ffa6d63b	21	// Class performs digitization of Summable digits
ffa6d63b	22	//
61e0abb5	23	// In addition it performs mixing of summable digits from different events.
	24	//
	25	// For each event two branches are created in TreeD:
	26	// "EMCAL" - list of digits
	27	// "AliEMCALDigitizer" - AliEMCALDigitizer with all parameters used in digitization
	28	//
	29	// Note, that one cset title for new digits branch, and repeat digitization with
	30	// another set of parameters.
	31	//
	32	// Examples of use:
	33	// root[0] AliEMCALDigitizer * d = new AliEMCALDigitizer() ;
	34	// root[1] d->ExecuteTask()
	35	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	36	// //Digitizes SDigitis in all events found in file galice.root
	37	//
	38	// root[2] AliEMCALDigitizer * d1 = new AliEMCALDigitizer("galice1.root") ;
	39	// // Will read sdigits from galice1.root
	40	// root[3] d1->MixWith("galice2.root")
	41	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	42	// // Reads another portion of sdigits from galice2.root
	43	// root[3] d1->MixWith("galice3.root")
	44	// // Reads another portion of sdigits from galice3.root
	45	// root[4] d->ExecuteTask("deb timing")
	46	// // Reads SDigits from files galice1.root, galice2.root ....
	47	// // mixes them and stores produced Digits in file galice1.root
	48	// // deb - prints number of produced digits
	49	// // deb all - prints list of produced digits
	50	// // timing - prints time used for digitization
ffa6d63b	51	////////////////////////////////////////////////////////////////////////////////////
61e0abb5	52	//
ffa6d63b	53	//*-- Author: Sahal Yacoob (LBL)
814ad4bf	54	// based on : AliEMCALDigitizer
05a92d59	55	// Modif:
	56	// August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
	57