Changes between Initial Version and Version 1 of DatatakingProcedures

Timestamp:

08/08/13 11:02:56 (11 years ago)

Author:

ftemme

Comment:

--

DatatakingProcedures

@@ +1 @@
+= Datataking Procedures
+
+== First Drs Calibration
+
+**Notice:** dimscript for this procedure: ScriptsForDimCtrl/FirstDrsCalibration.dim
+
+**Remote-datataking:** In case of remote data-taking this section can be skiped. In this case you can directly open the lid, and start with the data-taking including the DRS calibration.
+
+0. Do _Start_ (DRS Calibration) in the fad-tab
+0. Take *DRS: Pedestal* (1000 events)
+0. Take *DRS: Gain* (1000 events)
+0. Take *Pedestal* (1000 events)
+0. Switch to FITS file format in the fad-tab
+0. Take *Pedestal* (1000 events)
+0. Switch on the temperature control (Feedback-tab: *Start*, *Enable output*)
+0. Switch on the BIAS voltage (Set the global offset to one DAC count in the Bias tab and wait until the temperature feedback has ramped the voltages properly)
+0. Take *Pedestal* (1000 events)
+0. Switch off the bias voltage (*Set all to 0*)
+0. Open the lid
+
+== Normal Datataking
+
+0. Move the telescope to wobble position 1
+0. Make sure Bias voltage is off
+0. Do _START_ (DRS Calibration) in the fad-tab
+0. Take *DRS: Pedestal* (1000 events, MCP *Start Run* on GUIs left side)
+0. Take *DRS: Gain* (1000 events)
+0. Take *DRS: Pedestal* (1000 events)
+0. Switch to FITS file format in the fad-tab
+0. Take *DRS: Pedestal* (1000 events)
+0. Take *DRS: Time* (1000 events)
+0. Do _RESET_ (DRS Calibration) to reset the secondary baseline in the fad-tab
+0. Take *Pedestal* (1000 events)
+0. Switch to FITS file format in the fad-tab
+0. Send somebody out at the backdoor to measure the the sky-brightness with the sky-meter at the rough direction the telescope is pointing and write it down in the logbook
+0. Take *Pedestal* (1000 events)
+0. Switch Bias on (set to one DAC count and wait for the feedback)
+0. Take *Pedestal* (1000 events)
+0. Take *External light pulser* (1000 events)
+0. Take data with full trigger area (four times 5 minutes)
+0. Move the telescope to wobble position 2
+0. Send somebody out at the backdoor to measure the the sky-brightness with the sky-meter at the rough direction the telescope is pointing and write it down in the logbook
+0. Take *Pedestal* (1000 events)
+0. Take *External light pulser* (1000 events)
+0. Take data with full trigger area (four times 5 minutes)
+0. Go on with the beginning of the data taking procedure
+
+== ratescan
+
+0. Track a dark region
+ - low zenith (<30°)
+ - no bright star
+ - no direct moonlight in the camera
+ - examples
+  - around 0:00 UTC: ra = 13.46667, dec = 27.12833
+  - around 4:00 UTC: ra = 21.45, dec = 14.9
+0. Take a run with type ratescan with unlimited event and unlimited duration (for configuring all programms)
+0. Ratescan/START_THRESHOLD_SCAN x y c
+
+variables:
+
+- x: start threshold
+- y: end threshold
+- c: stepsize (if negativ ratescan starts with |c| and handle it dynamically, if the ratescan needs too much time)
+
+Configuring manually:
+
+- Stop ratecontrol (I'm not sure if this is necessary)
+- ftmctrl/SET_DEAD_TIME 0 (in fact thats the minimum equal to 8ns (you can also set this value in the GUI)
+- GUI: no interleaved pedestal, no interleaved extLP, only physic triggers
+
+== Ampl. vs Bias measurement
+
+1. Track a dark region (same requirements as for the ratescan, see above)
+1. Do a DRS calibration
+1. Feedback/Start_Current_Control -1.0 (maybe Enable_Output yes)
+1. wait for 2 - 3 feedback voltage corrections
+1. switch to fits format
+1. Now take an external lp run with 1000 events
+ - be aware that for x = -1.0, -0.9, its possible to trigger 0 events. Than you can go on with the next overvoltage
+1. Increase voltage offset by 0.1 V go on with the next light-pulser run
+1. do this until +0.5 V offset
+
+Write down following in the logbook:
+
+- Offset
+- median Voltage
+- median Current
+- runnumber
+
+== Dim Scripts
+
+In FACT++/ScriptsForDimCtrl you will find the following scripts that could do parts of aboves procedures automatically.
+
+script_name | function
+:- | :- 
+ __FirstDrsCalib.dim__ | taking a first DRS calibration as described above
+ __DataTaking1.dim__ | procedure from step 2 to step 18
+ __DataTaking2.dim__  | procedure from step 21 to step 23 (which btw. is the same as step 16 to step 18)
+ __ResumeDataTaking.dim__  | can be used if DataTaking crashes during the first of a 4x5min run set to take 4 runs of  5 mins in a row
+ __Take<source_name>.dim__  | procedure from step 1 to 23 with for Source <source_name> (2 Wobble positions)
+ __AmplVsOv.dim__  | do steps 2 to 5 of the Amplitude vs Bias measurement with an overvoltage of x
+
+Scripts can be started in the dimctrl screen on data by typing:  __.x ScriptsForDimCtrl/<script_name>__
+
+Scripts can be stopped via dimctrl --stop in a bash
+
+- this command starts a client of the dimctrl-server (which runs the script) and sends a STOP command to the server
+- its only possible when the first dimctrl was started as a server (dimctrl --server)
+
+if you want to only take the second wobble position the script can be started by: __.x ScriptsForDimCtrl/Take<source_name>:2__
+
+scripts available for the following sources:
+source | <script_name>
+:- | :- 
+ __Crab__ | TakeCrab.dim
+ __Mrk421__ | TakeMrk421.dim
+ __Mrk501__ | TakeMrk501.dim
+ __1ES1218+304__ | Take1218.dim