CBM-CCNU-electronics.pptVIP

Activities on the MRPC test setup at CCNU Dong Wang CCNU ?Current TOF readout chain at CCNU -Data Signal link -System building situation ?Conclusion Plan Outline The MRPC test setup at ccnu PADI GET4 ROC CLOSY MRPC gas cell Current readout system DAQ ROC ETH MRPC PADI GET4 CLOSY data clkSync ?PADI threshold setting ?GET4 message validity ?CLOSY clkSync provider ?ROC -Monitor Control -Data pre-processing -Data readout -Watch dog ETH CLOSY ? CLOSY is used to provide the system clock and Sync pulse signal ?Three types of clock are generated ： -156.25MHz phase-coupled clock -250MHz phase-coupled clock -synchronized pulse signal ?156.25MHz phase-coupled clock and synchronized pulse signal are used by GET4 ?250MHz phase-coupled clock and synchronized pulse signal are used by ROC CLOSY 156.25MHz 250MHz Sync pulse ROC GET4 Introduction of MRPC ?The MRPC(Six channels Pad MRPC)is made by Tsinghua university HV power in Gas out Gas in Signal output NO.TM3064 Introduction of MRPC m R P C gas cell gas input gas output SY-9506 N570 signal-output R23( Freon) SF6(sulfur hexafluoride) ?Three kinds of gas are used as operating gas：R23、SF6、 SY-9506 is used to control the flow of gas (isobutane) SF6 C4H10 R23 5 ： 5 ： 95 N570：HV power supply ?N570 is used to provide voltage for MRPC Wide Voltage-Current Capability 0 to 10kV/1mA 10kV to 15kV/0.5mA ?LEMO_00 is used as HV output connector ?PCI-card is used to set the parameter of N570 from PC Cosmic rays test setup DISCR (CF8000) AND Oscilloscope (CO4020) NIM NIM S2 S1 Trig MRPC scintillator 1 scintillator 2 V1 V2 PMT2 PMT1 PMT1 PMT2 S3 diff Cosmic rays test setup ?s1:PMT1 signal output s2:PMT2 signal output s3: s1 s2 (logic AND) s2 s1 s3(Trig) Signal output of MRPC ?After all preparations were been made ,the signal ouput of RPC is below (differential output)