FADC DAQ
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Original_Moller_FADC_page(fadc)
Contents
Documentation
DAQ
- VME Crate Diagram
- VME Crate Modules
- FlexIO Board
- Scaler Module V560 (pdf)
- CAEN QDC V792 (pdf)
- Connection Diagram
- Signal Connections
FADC Documentation
- Hardware Architecture (pdf presentation)
- Firmware Architecture part1 (pdf)
- Firmware Architecture part2 (pdf)
- Data Format (pdf)
CODA Startup
- FADC CODA is running on hamoller computer under moller account.
To start CODA one can type command: start_coda_fadc - that fires up the usual set of windows for ET, ER, EB, etc. For FADC DAQ fadc_moller configuration in CODA RunControl is used.
- FADC parameters.
There is configuration file with settable parameters for FADC. File is located in directory: ~moller/crl/FADC/fadc_params.cnf Parameters from file are loaded to FADC in Prestart state of CODA.
There is self explained list of FADC parameters from configuration file:
# Wed Apr 21 16:22:20 EDT 2010 # FADC settable parameters
# Threshold on calorimeter sums (define triggers and SW scaler logic) FA_SUM_THRESH_CR 8500 FA_SUM_THRESH_CL 8500
# Threshold on individual channels # Define SW scaler logic for Scintillators only # Controls digitized data output for all channels (ie. 'zero-suppression') FA_CHN_THRESH_SR 500 FA_CHN_THRESH_SL 500 FA_CHN_THRESH_CR 500 FA_CHN_THRESH_CL 500
## Prescale range: 1--2047 FADC_PRESCALE_CL 1000 FADC_PRESCALE_CR 1000 FADC_PRESCALE_CRL 200 ## These many DATA trigger are grouped into each DATA interrupt FADC_EVENTS_PER_BLOCK 20
## PULSE_WIDTH range is from 3--255 (3 is default) FADC_PULSE_WIDTH 3
## COIN_WIDTH range is from 1--255 (2 is default) FADC_COIN_WINDOW 2
## Delays range: 1--255 FADC_DELAY_CL 0 FADC_DELAY_CR 0 FADC_DELAY_SL_0 1 FADC_DELAY_SL_1 1 FADC_DELAY_SL_2 1 FADC_DELAY_SL_3 1 FADC_DELAY_SR_0 1 FADC_DELAY_SR_1 1 FADC_DELAY_SR_2 1 FADC_DELAY_SR_3 1 ## This delay is for the _delay counts (random background measure) FADC_DELAY_SRL 25
- Data stored on hamoller computer to directory: /data1/raw/
Analysis
- Start ROOT-based analizer
- Data Trigger Analysis
Useful tips
- Signal photos: MPS(blue) vs Helicity(yellow) signal, zoomed , as on Oct 07 2012
