#include <DTDigiSyncTOFCorr.h>

Inheritance diagram for DTDigiSyncTOFCorr:

Public Member Functions
double	digitizerOffset (const DTWireId id, const DTLayer layer=nullptr) const override
	Delays to be added to digi times during digitization, in ns. More...

	DTDigiSyncTOFCorr (const edm::ParameterSet &)
	Constructor. More...

double	emulatorOffset (const DTWireId *id) const override
	Offset to obtain "raw" TDCs for the L1 emulator from digis. More...

	~DTDigiSyncTOFCorr () override
	Destructor. More...

Public Member Functions inherited from DTDigiSyncBase
	DTDigiSyncBase ()
	Constructor. More...

virtual	~DTDigiSyncBase ()
	Destructor. More...

Private Attributes
int	corrType

double	theOffset

Detailed Description

Digi offset computed as:
t0 = Tcommon - aTOF

where Tcommon is a fixed offset defined in
DTDigiSyncTOFCorr:offset (in ORCA the default was = 500 ns)

and aTOF is set according to MuBarDigiSyncTOFCorr:TOFCorrection:
0: no TOF correction (aTOF=0)
1: aTOF = the TOF of an infinite-momentum particle travelling from the nominal IP to the 3D center of the chamber
2: ditto, but for a particle travelling to the 3D center of the wire. (This mode is avaliable for comparison with older data which were produced in this way) 3: aTOF = the TOF of an infinite-momentum particle travelling from the nominal IP to the 3D center of the SL. Use this, unless you really know what you are doing.

Author: N. Amapane, R. Bellan - INFN Torino

Definition at line 33 of file DTDigiSyncTOFCorr.h.

Constructor & Destructor Documentation

DTDigiSyncTOFCorr::DTDigiSyncTOFCorr ( const edm::ParameterSet & pSet )

Constructor.

Definition at line 18 of file DTDigiSyncTOFCorr.cc.

References edm::ParameterSet::getParameter().

                                                                 {
   theOffset = pSet.getParameter<double>("offset");     // 500ns
   corrType = pSet.getParameter<int>("TOFCorrection");  // 1
 }

DTDigiSyncTOFCorr::~DTDigiSyncTOFCorr ( )

override

Destructor.

Definition at line 23 of file DTDigiSyncTOFCorr.cc.

23 {}

Member Function Documentation

double DTDigiSyncTOFCorr::digitizerOffset	(	const DTWireId *	id,
		const DTLayer *	layer = `nullptr`
	)		const

overridevirtual

Delays to be added to digi times during digitization, in ns.

Implements DTDigiSyncBase.

Definition at line 26 of file DTDigiSyncTOFCorr.cc.

References DTLayer::chamber(), gather_cfg::cout, PV3DBase< T, PVType, FrameType >::mag(), hltrates_dqm_sourceclient-live_cfg::offset, GloballyPositioned< T >::position(), DTLayer::specificTopology(), DTLayer::superLayer(), GeomDet::surface(), Surface::toGlobal(), DTWireId::wire(), and DTTopology::wirePosition().

                                                                                         {
   double offset = theOffset;
   const double cSpeed = 29.9792458;  // cm/ns
 
   if (corrType == 1) {
     // Subtraction of assumed TOF, per CHAMBER
     double flightL = layer->chamber()->surface().position().mag();
     offset -= flightL / cSpeed;
   } else if (corrType == 2) {
     // Subtraction of assumed TOF, per WIRE
 
     // Position of the wire in the Layer's reference frame
     float localXPos = layer->specificTopology().wirePosition(id->wire());
     LocalPoint localPos(localXPos, 0, 0);
 
     // Distance of the wire to the CMS's I.P.
     double flightL = layer->surface().toGlobal(localPos).mag();
 
     offset -= flightL / cSpeed;
 
   } else if (corrType == 3) {
     // Subtraction of assumed TOF, per SUPERLAYER
     double flightL = layer->superLayer()->surface().position().mag();
     offset -= flightL / cSpeed;
   } else if (corrType != 0) {
     cout << "ERROR: SimMuon:DTDigitizer:DTDigiSyncTOFCorr:TOFCorrection = " << corrType << "is not defined " << endl;
   }
   return offset;
 }