Start CODA

Date: 02 December, 2010
File: start_coda.html

FADC CODA is running on 'hamoller' computer under 'moller' account.
To start CODA one can type command:
'start_coda_brad' - that fires up the usual set of windows for ET, ER, EB, etc.
For FADC DAQ 'fadc_moller' configuration 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/