Constants.cxx

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//--------------------------------------------------------------------------
//
// Description:
//  Class Constants; encapsulates static constants
//
//      See header for more info
//
// Environment:
//  Software developed for the BESIII Detector at the BEPCII
//
// Author List:
//  Zhang Yao
//
// Copyright Information:
//  Copyright (C) 2006
//
// History:
//  Migration for BESIII MDC
//
//------------------------------------------------------------------------
 
//-----------------------
// This Class's Header --
//-----------------------
#include "MdcGeom/Constants.h"
#include "CLHEP/Units/PhysicalConstants.h"
 
const double Constants::pi           = CLHEP::pi;
const double Constants::twoPi        = CLHEP::twopi;
const double Constants::halfPi       = CLHEP::halfpi;
const double Constants::radToDegrees = 180. / pi;
 
const double Constants::c          = 2.99792458E10; // cm/sec
const double Constants::epsilon    = 0.000000001;
const double Constants::vpropInner = 22.0; // cm/nsec
const double Constants::vpropOuter = 24.0; // cm/nsec
 
const int Constants::nSuperLayer          = 11;
const int Constants::nWireBeforeLayer[43] = {
    0,    40,   84,   132,  188,  252,  324,  404,  484,  560,  636,  724,  812,  912,  1012,
    1124, 1236, 1364, 1492, 1632, 1772, 1932, 2092, 2252, 2412, 2588, 2764, 2940, 3116, 3324,
    3532, 3740, 3948, 4188, 4428, 4668, 4908, 5164, 5420, 5676, 5932, 6220, 6508 };
const int Constants::maxCell[43] = { 40,  44,  48,  56,  64,  72,  80,  80,  76,  76,  88,
                                     88,  100, 100, 112, 112, 128, 128, 140, 140, 160, 160,
                                     160, 160, 176, 176, 176, 176, 208, 208, 208, 208, 240,
                                     240, 240, 240, 256, 256, 256, 256, 288, 288, 288 };
 
const int Constants::viewOfsLayer[11] = { 1, -1, 0, 0, 0, 1, -1, 1, -1, 0, 0 }; // FIXME
 
/// MDC Geometry
const double Constants::firstStLayerRadius = 23.6;
const double Constants::maxMdcRadius       = 81.0;
const double Constants::maxMdcZLen         = 150.;