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0001 #ifndef FastSimulation_ProtonTaggerFilter_H
0002 #define FastSimulation_ProtonTaggerFilter_H
0003 
0004 /// Fast simulation of near-beam detector acceptance.
0005 
0006 /**
0007  * This class defines an EDFilter which does the following:
0008  * - reads generated data (edm::HepMCProduct) from edm::Event
0009  * - selects forward protons
0010  * - determines (by means of AcceptanceTableHelper) the acceptance
0011  *   of near-beam detectors: FP420 and TOTEM
0012  * - returns a boolean value representing whether the proton(s) were seen
0013  *   with certain detectors, several options are available to choose
0014  *   between FP420/TOTEM detectors and their combinations
0015  *
0016  * Originally this code was meant as the FastTotem module from ORCA-based FAMOS,
0017  * ported to the CMSSW framework. However it was eventually re-written from scratch.
0018  * Nevelrtheless, the physics performace is just the same as one of FastTotem,
0019  * as it (currently) uses the same acceptance tables.
0020  * 
0021  * Author: Dmitry Zaborov
0022  */
0023 
0024 // Version: $Id: ProtonTaggerFilter.h,v 1.1 2008/11/25 17:34:15 beaudett Exp $
0025 
0026 #include "FWCore/Framework/interface/stream/EDFilter.h"
0027 
0028 #include "FastSimulation/ForwardDetectors/plugins/AcceptanceTableHelper.h"
0029 
0030 #include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
0031 #include "HepMC/GenEvent.h"
0032 
0033 #include "TFile.h"
0034 
0035 class ProtonTaggerFilter : public edm::stream::EDFilter<> {
0036 public:
0037   /// default constructor
0038   explicit ProtonTaggerFilter(edm::ParameterSet const& p);
0039 
0040   /// empty destructor
0041   ~ProtonTaggerFilter() override = default;
0042 
0043   /// startup function of the EDFilter
0044   virtual void beginJob();
0045 
0046   /// endjob function of the EDFilter
0047   virtual void endJob() {}
0048 
0049   /// decide if the event is accepted by the proton taggers
0050   bool filter(edm::Event& e, const edm::EventSetup& c) override;
0051 
0052 private:
0053   /// tokens to access the collections
0054   const edm::EDGetTokenT<edm::HepMCProduct> tokGen_;
0055   const edm::EDGetTokenT<edm::HepMCProduct> tokPile_;
0056 
0057   /// choose which of the detectors (FP420/TOTEM/both) will be used for beam 1
0058   const unsigned int beam1mode;
0059 
0060   /// choose which of the detectors (FP420/TOTEM/both) will be used for beam 2
0061   const unsigned int beam2mode;
0062 
0063   /// choose how to combine data from the two beams (ask for 1/2 proton)
0064   const unsigned int beamCombiningMode;
0065 
0066   /// Objects which actually compute the acceptance (one per detector or combination of detectors)
0067   AcceptanceTableHelper helper420beam1;
0068   AcceptanceTableHelper helper420beam2;
0069   AcceptanceTableHelper helper220beam1;
0070   AcceptanceTableHelper helper220beam2;
0071   AcceptanceTableHelper helper420a220beam1;
0072   AcceptanceTableHelper helper420a220beam2;
0073 };
0074 
0075 #endif