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update EPICS conditions for GlueX 2026 #129

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Merged
DraTeots merged 2 commits into from
Jun 24, 2026
Merged

update EPICS conditions for GlueX 2026 #129

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ed5e67c
Add CDC P/T for Naomi
sdobbs Jun 18, 2026
9569313
fix typo
sdobbs Jun 18, 2026
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42 changes: 40 additions & 2 deletions python/daq/update_epics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -197,7 +197,14 @@ def update_beam_conditions(run, log=log):

try:
# also, get the average CDC gas pressure
cmds = ["myStats", "-b", begin_time_str, "-e", end_time_str, "-l", "RESET:i:GasPanelBarPress1"]
cmds = ["myStats", "-b", begin_time_str, "-e", end_time_str, "-l", "RESET:i:GasPanelBarPress1,GAS:i::CDC_Temps-CDC_D1_Temp,GAS:i::CDC_Temps-CDC_D2_Temp,GAS:i::CDC_Temps-CDC_D3_Temp,GAS:i::CDC_Temps-CDC_D4_Temp,GAS:i::CDC_Temps-CDC_D5_Temp"]

cdc_temp_1 = -10.
cdc_temp_2 = -10.
cdc_temp_3 = -10.
cdc_temp_4 = -10.
cdc_temp_5 = -10.

log.debug(Lf("Requesting cdc_gas_pressure subprocess flags: '{}'", cmds))
# execute external command
p = subprocess.Popen(cmds, stdout=subprocess.PIPE)
Expand All @@ -216,11 +223,42 @@ def update_beam_conditions(run, log=log):
if key == b"RESET:i:GasPanelBarPress1":
log.debug(Lf("Saving cdc_gas_pressure = '{}'", float(value)))
conditions["cdc_gas_pressure"] = float(value)
log.debug("Done with cdc_gas_pressure")
if key == "GAS:i::CDC_Temps-CDC_D1_Temp":
cdc_temp_1 = float(value)
if key == "GAS:i::CDC_Temps-CDC_D2_Temp":
cdc_temp_2 = float(value)
if key == "GAS:i::CDC_Temps-CDC_D3_Temp":
cdc_temp_3 = float(value)
if key == "GAS:i::CDC_Temps-CDC_D4_Temp":
cdc_temp_4 = float(value)
if key == "GAS:i::CDC_Temps-CDC_D5_Temp":
cdc_temp_5 = float(value)
log.debug("Done with cdc_gas_pressure")
except Exception as e:
log.warn(Lf("Error in a cdc_gas_pressure request : '{}'", e))
conditions["cdc_gas_pressure"] = -1.

## calculate P/T for CDC
if(conditions["cdc_gas_pressure"] > 0.):
# average and check ranges
ntemps = 0
temp_avg = 0.
temps = [cdc_temp_1, cdc_temp_2, cdc_temp_3, cdc_temp_4, cdc_temp_5]
for temp in temps:
if(temp > 20. and temp < 30.):
ntemps += 1
temp_avg += (temp+273.) # don't forget to convert deg C -> deg K

if ntemps > 0:
temp_avg /= float(ntemps)

# do calc
conditions["cdc_povert"] = conditions["cdc_gas_pressure"] / temp_avg
else:
conditions["cdc_povert"] = -1.
else:
conditions["cdc_povert"] = -1.

return conditions


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