Status Report of Electronics 9 th Collaboration meeting

Status Report of Electronics 9 th Collaboration meeting 오영도, 백승록, 장지승

FADC DAQ System 특성 Ø notice(주) 의 nfadc 400 모듈 사용 - 4 channel / board - Sampling time : 2. 5 ns - Threshold, digital gain 설정가능 - 10 bit resolution for 0 ~ 1 V - positive/negative - VME 기반 - USB 통신 ( 5 MB/sec ) Ø 총 8개 nfadc 400사용 총 2개 VME crate 사용 (4개 보드/crate) Ø 31채널에 대한 multiplicity 트리거 사용 - reno version firmware 작성 nfadc 400에 다운로드 (각 nfadc 400 보드의 multiplicity를 trigger box에 보냄) - trigger box에서 8개보드에서 받은 multiplicity를 합산하여 설정된 threshold multiplicity를 넘을 경우, 트리거 신호와 트리거 넘버 생성 Ø 현재 max 78 Hz rate. FADC interface개선 후 ~500 Hz 예상

HV Split box internet FADC 1 FADC 2 renodaq 01 Disk array Internal network FADC 3 FADC 4 VME 1 HV Split box CAEN HV supply TRIGGER BOX TTL pulse FADC 5 FADC 6 FADC 7 External trigger Calibration system FADC 8 VME 2 renodaq 02

Data flow & structure DAQ PCs Reno 00 VME 1 Merger VME 2 <Header> Run_number Pedestal Gain HV tag THR tag <Event> event_number Wave[31][128] Area[31] time[31] ……. . event builder < objects from off line reconstruction > …. …. <31 channel> - Raw data branch Short Wave[128] Float Area Float time - on-line analysis branch Software version Pedestal – average, rms Cluster – number , P. E number , width

Data management for mockup detector MC and Data with reconstructed values MC and Data in the same data structure MC (Mock. Sim) user 1 Production Reconstruction user 2 Ntuples user 3 Raw DATA step 1 … step 2 step 3 step 4 Analysis codes Calibration On line -DAQ+merger Off line -event building Run. Configuration Database From Dr. E. J. Jeon

Mockup DAQ – control and monitoring 시뮬레이션 데이터임 512 event 마다 갱신함

WAVE form Crate 1 Crate 2 320 ns FADC 1 FADC 2 FADC 3 FADC 4 FADC 5 FADC 6 FADC 7 FADC 8

Charge distribution/channel

WAVE form Charge distribution/channel Crate 1 Crate 2 FADC 8 FADC 7 FADC 6 FADC 5 FADC 4 FADC 3 FADC 2 FADC 1 PMT response : avg + rms Charge 2 D display (old version) Hit Time Pulse generator 사용하여 획득한 실제 데이터 X Y Z Source Position

Next Things to do Ø Calbration running 구성 - pulse generator run digital gain calibration timing calibration linearity calibration - LED run : external trigger 사용 trigger box에 TTL 직접 입력 single photoelectron 측정 - source run : Multiplicity trigger 사용 에너지 calibration position reconstruction - pedestal external TTL generator 사용 Ø Running Mode - Pedestal run , LED run , Source Run , Pulse Run , Cosmic run