Changeset 13110 for trunk/FACT++/ScriptsForDimCtrl/FirstDrsCalib

Timestamp:

03/14/12 21:19:38 (13 years ago)

Author:

neise

Message:

complete rework, based on comments of TB

File:

• trunk/FACT++/ScriptsForDimCtrl/FirstDrsCalib (modified) (3 diffs)

trunk/FACT++/ScriptsForDimCtrl/FirstDrsCalib

@@ -1 @@
-# Making sure bias is off
+# dimctrl script
+.! echo `date -u` " " >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+.! echo `date -u` " " >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 .! echo `date -u` "First DRS Calibration Script starting up..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 .! echo `date -u` "-------------------------------------------" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
-.! echo `date -u` "reconnecting to bias crate / switching bias ON / disabling feedback" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
-BIAS_CONTROL/RECONNECT
-.! echo `date -u` "wating for RECONNECT --> voltageOff" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
-.s BIAS_CONTROL 7 5000
-FEEDBACK/START_CURRENT_CONTROL 0.00
-FEEDBACK/ENABLE_OUTPUT 1
-.w 3000
+
+.w 2000
+# As a First step we want to calibrate the current, which are read from the bias crate,
+# and not take a DRS calibration, as it is mentioned in the data taking page...
+# so for this we should get the feedback and biasctrl programs into known states
+# I think it is good to try a RECONNECT to the bias, and make sure the voltage is off
+# Since we do not know, what the feedback program is doing at the moment, we should as well, 
+# tell it to keep its mouth shut ... just to be sure, we know whats going on
+FEEDBACK/STOP
+.w 2000
+# stopping should always be possible, and end in state 'Connected'(6)
+.s FEEDBACK 6
+
+#BIAS_CONTROL/RECONNECT
+# If we were disconnected, and this was the first try of the night, the bias_ctrl should
+# be in state 'VoltageOff'(7) more or less immediately
+#.s BIAS_CONTROL 3
+#.s BIAS_CONTROL 7 5000
+# if these assumptions are all wrong, then we might have been properly connected anyway, 
+# and just have to ramp down... lets do it, but wait forever, in case it does not work
+BIAS_CONTROL/SET_ZERO_VOLTAGE
+.w 2000
+.s BIAS_CONTROL 7
+
+# in case we reach this line, the voltages are all off, and the feedback does not do anything
+# So lets do the current calibration, therefor we tell the bias crate to ramp up just 1 single DAC count(~22mV)
+# the result of this action is, to get bias_ctrl into the state 'VoltageOn'(9), but since we only go one DAC count it shouldn't take long
 BIAS_CONTROL/SET_GLOBAL_DAC 1
+.w 2000
 .s BIAS_CONTROL 9
-FEEDBACK/ENABLE_OUTPUT 0
-FEEDBACK/STOP
-.s FEEDBACK 6
-.w 500
-.! echo `date -u` "calibrating bias crate current readings..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+
+# now we may tell the feedback program to calibrate the currents ... 
+# I do not understand, if I have to explicitely allow the feedback program to generate output,
+# or if it just produces output...
+# As far as I understand, the feedback output enable status is the same, 
+# as it was before I send the STOP command... so it is unknown at this point.
+# and in addition enabling or disabling the output, when STOPed is not possible as far as I know... 
+# I try to enable it anyway.
+FEEDBACK/ENABLE_OUTPUT yes
+.w 2000
+
+.! echo `date -u` "calibrating bias crate current readings..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log 
 FEEDBACK/CALIBRATE_CURRENTS
+.w 5000
+# in order to find out when the calibration ends, we have to wait for the transistion from state
+# 'Calibrating'(13) back to 'Connected'(6)
 .s FEEDBACK 13
 .s FEEDBACK 6
-.w 3000
-FEEDBACK/START_CURRENT_CONTROL 0.00
-.w 500
-FEEDBACK/ENABLE_OUTPUT 1
+
+# Thomas Bretz told me, that the feedback, after this is step has disabled its output
+# and is in the mode, we might call 'temperature control' even there is no temerature beeing controlled.
+# I don't know where the voltage is ... in order to perform the calibration, the feedback had to 
+# ramp up to 2V below the operational voltage, i.e. about 1V below the breakdown voltage
+
+# We want to take a DRS amplitude calibration so we have to ramp down the bias voltage.
+# this 10sec wait is needed in order for the bias not to disconect all the time...
+.! echo `date -u` "current calibration done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log 
+.w 10000
+
 BIAS_CONTROL/SET_ZERO_VOLTAGE
+.w 5000
 .s BIAS_CONTROL 7
-.! echo `date -u` "bias voltage is switched off" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+
+# So now we can take the 3 runs, which are called DRS amplitude calibration:
+# A pedestal run with ROI=1024
+# A gain calibration run with ROI=1024
+# and a second pedestal run, with the same ROI as our next data will be, i.e. ROI=300 in this case
+.! echo `date -u` "taking DRS:Pedestal 1000 ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 FAD_CONTROL/START_DRS_CALIBRATION
-
-.! echo `date -u` "taking DRS:Pedestal 1000 ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+###FAD_CONTROL/SET_FILE_FORMAT 0  
 MCP/START -1 1000 drs-pedestal
 .s FAD_CONTROL 8
@@ -46 +91 @@
 .! echo `date -u` "... done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 
+# okay this is the DRS calibration for the next few runs.
+# we are now asked to take again a pedestal run, which can be used, to 
+# calculate the electronics noise for instance ... since the shutter is closed and the 
+# voltage is off .. there should not be alot of signal in it :-)
 .! echo `date -u` "taking crosscheck Pedestal 1000 ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 FAD_CONTROL/SET_FILE_FORMAT 2
+###FAD_CONTROL/SET_FILE_FORMAT 0
 MCP/START -1 1000 pedestal
 .s FAD_CONTROL 8
@@ -53 +103 @@
 .! echo `date -u` "... done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 
+# now we want to take a run, with dark counts events 
+# so we need to ramp up the voltage
+# we want to use the 'current control' more so we give the commands for this...
 .! echo `date -u` "switching on bias ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+FEEDBACK/STOP
+FEEDBACK/START_CURRENT_CONTROL 0.0
+FEEDBACK/ENABLE_OUTPUT yes
+# the feedback should be in state 'CurrentControl'(12) now
+.s FEEDBACK 12
+
+# now we give the feedback a hint, that it may ramp ... 
 BIAS_CONTROL/SET_GLOBAL_DAC 1
+# after this command the bias_ctrl should be in state 'VoltageOn'(9) after a second or so
 .s BIAS_CONTROL 9
+# then usually it takes some time until the feedback has enough information to really start controlling the voltage
+# when the feedback actually kicks in, the bias is first in state 'Ramping'(5) for some seconds and finally in 'VoltageOn'(9)
+# again
 .s BIAS_CONTROL 5
 .s BIAS_CONTROL 9
 .! echo `date -u` "... done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 
-.! echo `date -u` "taking Pedestal with BIAS on 1000 ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
-MCP/START -1 1000 pedestal
+# so now we can take the dark count run ... 
+# this might be changed in the future ... either the number of events or the the ROI might be changed
+# then the DRS calibration above, and the pedestal run in between have to be changed as well.
+.! echo `date -u` "taking Pedestal with BIAS on 3000 ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+MCP/START -1 3000 pedestal
 .s FAD_CONTROL 8
 .s FAD_CONTROL 4
 .! echo `date -u` "... done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 
+# at the end the bias voltage should be ramped down, since in a few seconds a shifter wit ha flashlight
+# will come out to open the shutter...
 .! echo `date -u` "switching OFF bias ..." >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 BIAS_CONTROL/SET_ZERO_VOLTAGE
 .s BIAS_CONTROL 7
-.! echo `date -u` "... done" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 
+.! echo `date -u` "This is the end of First DRS Calibration" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
 .! echo `date -u` "----------------------------------------------------" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
-.! echo `date -u` "This is the end of First DRS Calibration" >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+.! echo `date -u` " " >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log
+.! echo `date -u` " " >> ~/FACT++/ScriptsForDimCtrl/DataTaking.log