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pamelats |
1.1 |
#include "Digitizer.h" |
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pamelats |
1.3 |
void Digitizer::DigitizeAC() { |
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pamelats |
1.1 |
// created: J. Conrad, KTH |
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// modified: S. Orsi, INFN Roma2 |
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// fDataAC[0-63]: main AC board |
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// fDataAC[64-127]: extra AC board (identical to main board, for now) |
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// We activate all branches. Once the digitization algorithm is determined |
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// only the branches that involve needed information will be activated |
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pamelats |
1.3 |
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// Threshold: thr=0.8 MeV. |
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Float_t thr = 8e-4; |
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Int_t nReg=6,i; |
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pamelats |
1.1 |
fDataAC[0] = 0xACAC; |
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fDataAC[64]= 0xACAC; |
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fDataAC[1] = 0xAC11; |
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fDataAC[65] = 0xAC22; |
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pamelats |
1.3 |
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pamelats |
1.1 |
// the third word is a status word (dummy: "no errors are present in the AC boards") |
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fDataAC[2] = 0xFFFF; //FFEF? |
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fDataAC[66] = 0xFFFF; |
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// FPGA Registers (dummy) |
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pamelats |
1.3 |
for (i=0; i<=nReg; i++){ |
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pamelats |
1.1 |
fDataAC[i+4] = 0xFFFF; |
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fDataAC[i+68] = 0xFFFF; |
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} |
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// shift registers (moved to the end of the routine) |
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Int_t evntLSB=(UShort_t)Ievnt; |
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Int_t evntMSB=Ievnt >> 16; |
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// singles counters are dummy |
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pamelats |
1.3 |
for(i=0; i<=15; i++){ //SO Oct '07: |
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pamelats |
1.1 |
fDataAC[i+26] = evntLSB; |
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fDataAC[i+90] = evntLSB; |
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pamelats |
1.3 |
} |
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for(i=0; i<=7; i++){ |
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pamelats |
1.1 |
fDataAC[i+42] = evntLSB; |
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fDataAC[i+106] = evntLSB; |
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pamelats |
1.3 |
} |
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pamelats |
1.1 |
// increments for every trigger might be needed at some point. |
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// dummy for now |
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fDataAC[50] = 0x0000; |
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fDataAC[114] = 0x0000; |
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// dummy FPGA clock (increment by 1 at each event) |
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pamelats |
1.3 |
if(Ievnt<=0xFFFF){ |
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pamelats |
1.1 |
fDataAC[51] = 0x0000; |
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fDataAC[52] = Ievnt; |
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fDataAC[115] = 0x0000; |
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fDataAC[116] = Ievnt; |
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pamelats |
1.3 |
} |
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else{ |
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pamelats |
1.1 |
fDataAC[51] = evntMSB; |
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fDataAC[52] = evntLSB; |
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fDataAC[115] = fDataAC[51]; |
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fDataAC[116] = fDataAC[52]; |
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} |
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// dummy temperatures |
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fDataAC[53] = 0x0000; |
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fDataAC[54] = 0x0000; |
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fDataAC[117] = 0x0000; |
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fDataAC[118] = 0x0000; |
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// dummy DAC thresholds |
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pamelats |
1.3 |
for(i=0; i<=7; i++){ |
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pamelats |
1.1 |
fDataAC[i+55] = 0x1A13; |
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fDataAC[i+119] = 0x1A13; |
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} |
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pamelats |
1.3 |
// In this simpliefied approach we will assume that once a particle releases > 0.5 mip in one of the 12 AC detectors it will fire. We will furthermore assume that both cards read out identical data. |
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pamelats |
1.1 |
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pamelats |
1.3 |
// If you develop your digitization algorithm, you should start by identifying the information present in level2 (post-darth-vader) data. |
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pamelats |
1.1 |
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pamelats |
1.3 |
Float_t SumEcat[4],SumEcas[4],SumEcard[4]; |
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for(i=0;i<4;i++){ |
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SumEcat[i]=0.; |
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SumEcas[i]=0.; |
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SumEcard[i]=0.; |
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} |
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pamelats |
1.1 |
// energy dependence on position (see file AcFitOutputDistancePmt.C by S.Orsi) |
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// based on J.Lundquist's calculations (PhD thesis, page 94) |
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// function: [0]+[1]*atan([2]/(x+1)), where the 3 parameters are: |
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// 8.25470e-01 +- 1.79489e-02 |
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// 6.41609e-01 +- 2.65846e-02 |
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// 9.81177e+00 +- 1.21284e+00 |
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// hp: 1 minimum ionising particle at 35cm from the PMT releases 1mip |
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// PMT positions: x,y,z: (average position of the 2 PMTs) |
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Float_t posCasPmt[4][3]={{28.308, -17.168, 63.644}, // 1 - CAS CPU: x,y,z |
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{18.893, 24.913, 63.644}, // 2 - CAS DCDC |
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{-24.307, 17.162, 63.644}, // 3 - CAS VME |
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{-17.765, -28.300, 63.644}}; // 4 - CAS IPM |
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Float_t dAC=0.; // distance from PMT |
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pamelats |
1.3 |
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if(Nthcat>*ncat){ |
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cout<<"*** ERROR AC! Nthcat= "<<Nthcat<<" out of range! "<<endl; |
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for(i=0;i<4;i++)SumEcat[i]=2*thr; |
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} |
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else{ |
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for(i=0;i<Nthcat;i++){ |
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if(Icat[i]>0 && Icat[i]<5)SumEcat[Icat[i]-1]+=Erelcat[i]; |
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} |
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} |
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if(Nthcas>*ncas){ |
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cout<<"*** ERROR AC! Nthcas= "<<Nthcas<<" out of range!"<<endl; |
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for(i=0;i<4;i++)SumEcas[i]=2*thr; |
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} |
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else{ |
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for (i=0;i<Nthcas;i++){ |
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if(Icas[i]>0 && Icas[i]<5){ |
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dAC=sqrt(pow((Xincas[i]+Xoutcas[i])/2 - posCasPmt[Icas[i]-1][0],2) + pow((Yincas[i]+Youtcas[i])/2 - posCasPmt[Icas[i]-1][1],2) + pow((Zincas[i]+Zoutcas[i])/2 - posCasPmt[Icas[i]-1][2],2)); |
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SumEcas[Icas[i]-1] += Erelcas[i]*attenAC->Eval(dAC); |
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} |
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} |
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} |
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if(Nthcard>*ncar){ |
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cout<<"*** ERROR AC! Nthcard= "<<Nthcard<<" out of range!"<<endl; |
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for(i=0;i<4;i++)SumEcard[i]=2*thr; |
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} |
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else{ |
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for(Int_t k= 0;k<Nthcard;k++){ |
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if(Icard[i]>0 && Icard[i]<5)SumEcard[Icard[k]-1] += Erelcard[k]; |
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pamelats |
1.1 |
} |
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pamelats |
1.3 |
} |
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pamelats |
1.1 |
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// channel mapping Hit Map |
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// 1 CARD4 0 LSB |
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// 2 CAT2 0 |
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// 3 CAS1 0 |
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// 4 NC 0 |
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// 5 CARD2 0 |
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// 6 CAT4 1 |
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// 7 CAS4 0 |
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// 8 NC 0 |
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// 9 CARD3 0 |
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// 10 CAT3 0 |
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// 11 CAS3 0 |
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// 12 NC 0 |
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// 13 CARD1 0 |
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// 14 CAT1 0 |
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// 15 CAS2 0 |
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// 16 NC 0 MSB |
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// In the first version only the hit-map is filled, not the SR. |
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fDataAC[3] = 0x0000; |
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if (SumEcas[0] > thr) fDataAC[3] = 0x0004; |
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if (SumEcas[1] > thr) fDataAC[3] += 0x4000; |
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if (SumEcas[2] > thr) fDataAC[3] += 0x0400; |
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if (SumEcas[3] > thr) fDataAC[3] += 0x0040; |
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if (SumEcat[0] > thr) fDataAC[3] += 0x2000; |
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if (SumEcat[1] > thr) fDataAC[3] += 0x0002; |
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if (SumEcat[2] > thr) fDataAC[3] += 0x0200; |
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if (SumEcat[3] > thr) fDataAC[3] += 0x0020; |
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if (SumEcard[0] > thr) fDataAC[3] += 0x1000; |
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if (SumEcard[1] > thr) fDataAC[3] += 0x0010; |
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if (SumEcard[2] > thr) fDataAC[3] += 0x0100; |
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if (SumEcard[3] > thr) fDataAC[3] += 0x0001; |
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fDataAC[67] = fDataAC[3]; |
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// shift registers |
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// the central bin is equal to the hitmap, all other bins in the shift register are 0 |
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for (UInt_t i=0; i<=15; i++){ |
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fDataAC[i+11] = 0x0000; |
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fDataAC[i+75] = 0x0000; |
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} |
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fDataAC[18] = fDataAC[3]; |
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fDataAC[82] = fDataAC[3]; |
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// for (Int_t i=0; i<fACbuffer; i++){ |
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// printf("%0x ",fDataAC[i]); |
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// if ((i+1)%8 ==0) cout << endl; |
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// } |
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pizzolot |
1.4 |
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// the last word is a CRC |
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fDataAC[63] = EvaluateCrcAC (fDataAC, 0); |
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fDataAC[127]= EvaluateCrcAC (fDataAC, 1); |
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}; |
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UShort_t Digitizer::EvaluateCrcAC( UShort_t *pAC , Bool_t flag ) |
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{ |
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// Flag=0for AC1 ; flag=1 for AC2 |
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UShort_t check=0; |
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UInt_t l=0; |
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for (UInt_t i=0; i<63; i++) |
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{ |
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l = 64*flag + i ; |
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//printf("ACAC i=%d l=%d chech=%d \n",i,l,check); |
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check = crcAC(check, pAC[l]); |
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} |
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return check; |
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}; |
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UShort_t Digitizer::crcAC( UShort_t old , UShort_t neww ) |
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{ |
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union crc_data { |
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short word; |
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struct bit_field { |
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unsigned b0:1; |
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unsigned b1:1; |
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unsigned b2:1; |
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unsigned b3:1; |
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unsigned b4:1; |
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unsigned b5:1; |
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unsigned b6:1; |
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unsigned b7:1; |
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unsigned b8:1; |
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unsigned b9:1; |
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unsigned b10:1; |
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unsigned b11:1; |
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unsigned b12:1; |
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unsigned b13:1; |
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unsigned b14:1; |
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unsigned b15:1; |
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} bit; |
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} c,d,r; |
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| 229 |
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c.word = old; |
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d.word = neww; |
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r.word = 0; |
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| 233 |
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r.bit.b0 = c.bit.b0 ^ c.bit.b4 ^ c.bit.b8 ^ c.bit.b11 ^ c.bit.b12 ^ |
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d.bit.b0 ^ d.bit.b4 ^ d.bit.b8 ^ d.bit.b11 ^ d.bit.b12; |
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r.bit.b1 = c.bit.b1 ^ c.bit.b5 ^ c.bit.b9 ^ c.bit.b12 ^ c.bit.b13 ^ |
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d.bit.b1 ^ d.bit.b5 ^ d.bit.b9 ^ d.bit.b12 ^ d.bit.b13; |
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| 239 |
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r.bit.b2 = c.bit.b2 ^ c.bit.b6 ^ c.bit.b10 ^ c.bit.b13 ^ c.bit.b14 ^ |
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d.bit.b2 ^ d.bit.b6 ^ d.bit.b10 ^ d.bit.b13 ^ d.bit.b14; |
| 241 |
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| 242 |
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r.bit.b3 = c.bit.b3 ^ c.bit.b7 ^ c.bit.b11 ^ c.bit.b14 ^ c.bit.b15 ^ |
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d.bit.b3 ^ d.bit.b7 ^ d.bit.b11 ^ d.bit.b14 ^ d.bit.b15; |
| 244 |
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| 245 |
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r.bit.b4 = c.bit.b4 ^ c.bit.b8 ^ c.bit.b12 ^ c.bit.b15 ^ |
| 246 |
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d.bit.b4 ^ d.bit.b8 ^ d.bit.b12 ^ d.bit.b15; |
| 247 |
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| 248 |
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r.bit.b5 = c.bit.b0 ^ c.bit.b4 ^ c.bit.b5 ^ c.bit.b8 ^ c.bit.b9 ^ |
| 249 |
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c.bit.b11 ^ c.bit.b12 ^ c.bit.b13 ^ |
| 250 |
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d.bit.b0 ^ d.bit.b4 ^ d.bit.b5 ^ d.bit.b8 ^ d.bit.b9 ^ |
| 251 |
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d.bit.b11 ^ d.bit.b12 ^ d.bit.b13; |
| 252 |
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| 253 |
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r.bit.b6 = c.bit.b1 ^ c.bit.b5 ^ c.bit.b6 ^ c.bit.b9 ^ c.bit.b10 ^ |
| 254 |
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c.bit.b12 ^ c.bit.b13 ^ c.bit.b14 ^ |
| 255 |
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d.bit.b1 ^ d.bit.b5 ^ d.bit.b6 ^ d.bit.b9 ^ d.bit.b10 ^ |
| 256 |
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d.bit.b12 ^ d.bit.b13 ^ d.bit.b14; |
| 257 |
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| 258 |
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r.bit.b7 = c.bit.b2 ^ c.bit.b6 ^ c.bit.b7 ^ c.bit.b10 ^ c.bit.b11 ^ |
| 259 |
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c.bit.b13 ^ c.bit.b14 ^ c.bit.b15 ^ |
| 260 |
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d.bit.b2 ^ d.bit.b6 ^ d.bit.b7 ^ d.bit.b10 ^ d.bit.b11 ^ |
| 261 |
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d.bit.b13 ^ d.bit.b14 ^ d.bit.b15; |
| 262 |
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| 263 |
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r.bit.b8 = c.bit.b3 ^ c.bit.b7 ^ c.bit.b8 ^ c.bit.b11 ^ c.bit.b12 ^ |
| 264 |
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c.bit.b14 ^ c.bit.b15 ^ |
| 265 |
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d.bit.b3 ^ d.bit.b7 ^ d.bit.b8 ^ d.bit.b11 ^ d.bit.b12 ^ |
| 266 |
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d.bit.b14 ^ d.bit.b15; |
| 267 |
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| 268 |
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r.bit.b9 = c.bit.b4 ^ c.bit.b8 ^ c.bit.b9 ^ c.bit.b12 ^ c.bit.b13 ^ |
| 269 |
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c.bit.b15 ^ |
| 270 |
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d.bit.b4 ^ d.bit.b8 ^ d.bit.b9 ^ d.bit.b12 ^ d.bit.b13 ^ |
| 271 |
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d.bit.b15; |
| 272 |
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| 273 |
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r.bit.b10 = c.bit.b5 ^ c.bit.b9 ^ c.bit.b10 ^ c.bit.b13 ^ c.bit.b14 ^ |
| 274 |
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d.bit.b5 ^ d.bit.b9 ^ d.bit.b10 ^ d.bit.b13 ^ d.bit.b14; |
| 275 |
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| 276 |
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r.bit.b11 = c.bit.b6 ^ c.bit.b10 ^ c.bit.b11 ^ c.bit.b14 ^ c.bit.b15 ^ |
| 277 |
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d.bit.b6 ^ d.bit.b10 ^ d.bit.b11 ^ d.bit.b14 ^ d.bit.b15; |
| 278 |
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| 279 |
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r.bit.b12 = c.bit.b0 ^ c.bit.b4 ^ c.bit.b7 ^ c.bit.b8 ^ c.bit.b15 ^ |
| 280 |
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d.bit.b0 ^ d.bit.b4 ^ d.bit.b7 ^ d.bit.b8 ^ d.bit.b15; |
| 281 |
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| 282 |
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r.bit.b13 = c.bit.b1 ^ c.bit.b5 ^ c.bit.b8 ^ c.bit.b9 ^ |
| 283 |
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d.bit.b1 ^ d.bit.b5 ^ d.bit.b8 ^ d.bit.b9; |
| 284 |
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| 285 |
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r.bit.b14 = c.bit.b2 ^ c.bit.b6 ^ c.bit.b9 ^ c.bit.b10 ^ |
| 286 |
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d.bit.b2 ^ d.bit.b6 ^ d.bit.b9 ^ d.bit.b10; |
| 287 |
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| 288 |
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r.bit.b15 = c.bit.b3 ^ c.bit.b7 ^ c.bit.b10 ^ c.bit.b11 ^ |
| 289 |
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d.bit.b3 ^ d.bit.b7 ^ d.bit.b10 ^ d.bit.b11; |
| 290 |
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| 291 |
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return r.word; |
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| 293 |
pamelats |
1.1 |
}; |
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