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00001 //--------------------------------------------------------------------------
00002 //
00003 // Description:
00004 //      Class Constants; encapsulates static constants
00005 //
00006 //      See header for more info
00007 //
00008 // Environment:
00009 //      Software developed for the BESIII Detector at the BEPCII
00010 //
00011 // Author List:
00012 //      Zhang Yao
00013 //
00014 // Copyright Information:
00015 //      Copyright (C) 2006
00016 // 
00017 // History:
00018 //      Migration for BESIII MDC
00019 //
00020 //------------------------------------------------------------------------
00021 
00022 //-----------------------
00023 // This Class's Header --
00024 //-----------------------
00025 #include "MdcGeom/Constants.h"
00026 #include "CLHEP/Units/PhysicalConstants.h"
00027 
00028 const double Constants::pi           =  CLHEP::pi;
00029 const double Constants::twoPi        =  CLHEP::twopi;
00030 const double Constants::halfPi       =  CLHEP::halfpi;
00031 const double Constants::radToDegrees =  180./pi;
00032  
00033 const double Constants::c            =  2.99792458E10;       // cm/sec
00034 const double Constants::epsilon      =   0.000000001;
00035 const double Constants::vpropInner   =  22.0;//cm/nsec
00036 const double Constants::vpropOuter   =  24.0;//cm/nsec
00037 
00038 const int Constants::nSuperLayer  =  11;
00039 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};
00040 const int Constants::maxCell[43] = { 
00041   40,44,48,56,     64,72,80,80,     76,76,88,88,
00042   100,100,112,112, 128,128,140,140, 160,160,160,160,
00043   176,176,176,176, 208,208,208,208, 240,240,240,240,
00044   256,256,256,256, 288,288,288 };
00045 
00046 const int Constants::viewOfsLayer[11] = {1,-1,0,0,0,1,-1,1,-1,0,0};//FIXME
00047 
00049 const double Constants::firstStLayerRadius = 23.6;
00050 const double Constants::maxMdcRadius = 81.0;
00051 const double Constants::maxMdcZLen   = 150.;

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