View source for D2n/Expert Checklist

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">Quick Links:
* [[Analysis resources for transversity]]
* [[Online_Replay#Expert_Info|Expert Hints for Online Replay]]
* [http://hallaweb.jlab.org/experiment/E06-014/ d2n Experiment]
* [http://www.jlab.org/~adaq/halog/html/logdir.html Hall A Log]
* [http://hallaweb.jlab.org/experiment/transversity/rundb/db_halla_wei/ Run Data Base]
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This is the check list for experts on [[D2n]] data checker shift. 

{{Pass|''Notice : Please add items of your specialty field, so every one will do the check''}}

== Beamline, beam charge, beam polarization ==
#  BPM A and B (x,y) positions [[Image:Bcm asym stripchart.jpg|thumb|[[beam charge asymmetry stripchart]]]]
#* Check the front room white board for default value
#  Beam charge asymmetry is small (less than 1000ppm) 
#* Check end-of-run
#* Check [[beam charge asymmetry stripchart]]
#  Check that the beam charge at end-of-run makes sense ? 
#* All BCM charge reading should be consistent
#* Example of Good Run:
<pre>
APPROXIMATE BCM CHARGES (C)
BCM u1 [ 0]:0.03799        BCM u3 [ 0]:0.03798        BCM u10[ 0]:0.0336         
BCM u1 [++]:0.009217       BCM u3 [++]:0.009211       BCM u10[++]:0.008148       
BCM u1 [--]:0.009464       BCM u3 [--]:0.009462       BCM u10[--]:0.008371       
BCM u1 [+-]:0.009214       BCM u3 [+-]:0.009211       BCM u10[+-]:0.008148       
BCM u1 [-+]:0.009466       BCM u3 [-+]:0.009465       BCM u10[-+]:0.008373       

BCM d1 [ 0]:0.03786        BCM d3 [ 0]:0.03787        BCM d10[ 0]:0.03787        
BCM d1 [++]:0.009183       BCM d3 [++]:0.009198       BCM d10[++]:0.009188       
BCM d1 [--]:0.009428       BCM d3 [--]:0.009432       BCM d10[--]:0.009432       
BCM d1 [+-]:0.009182       BCM d3 [+-]:0.009185       BCM d10[+-]:0.009185       
BCM d1 [-+]:0.009431       BCM d3 [-+]:0.009434       BCM d10[-+]:0.009436    
</pre>

== Run information ==
# Check scaler rate screen, pre-scale factors agree with earlier runs. [http://www.jlab.org/~adaq/halog/html/0902_archive/090216091559.html example of normal rate @ 15uA prodction]
# Check online CODA rate and CODA dead time. (Run scaler script, verify deadtime)
# Check start-of-run input. Target type, beam half wave plate, etc.
# Restart Compton and HAPPEX every two hours or so
# Look at shift worker's run-sheet records.
# Confirm CODA not crashed, check DAQ-configuration: 
## LHRS: Lefthrs
## BigBite: bigbite_buf
# Check Halog entries.
# Check target polarization history. [[Image:Hall A Target Polarization.png|thumb|(Old picture. Need a new one since there is no spin flip for D2n) Example plot of a stable target]]
## Go To [http://www.jlab.org/~jinhuang/TargetStatus/ Target Status History]
# Check all HV on. BB chamber HV on before run starts.
#* [http://www.jlab.org/~adaq/halog/html/0811_archive/081129132504.html Example Start Run with All HV On]
#* Check Section
#** Left S2 HV Left/Right PMTs
#** Left S1/Cerenkov/A1 Cerenkov HV
#** Left Pion Rejector Layer 1/2 HV
#** Map  BB_SC_R  Measured Voltage/Current
#** Map  BB_DC  Measured Voltage/Current
#** Map  BB_PS_R  Measured Voltage/Current
#** Map  BB_SC_L  Measured Voltage/Current
#** Map  BB_PS_L  Measured Voltage/Current
#** Map  BB_SH  Measured Voltage/Current
# Halog left arm VDC efficiency plots once a shift
# Do [[Compton monitoring]]

== [[Online_Replay#Expert_Info|Replay]] ==

[[Online_Replay#HowTo_Quick_Check_Root_File_Replayed_by_Shift_Worker|Run show_all(<run number>) script]] after shift worker finish a replay. It will pop up a set of plots for expert, which would take ~10min to check through. 

*If the replay number is less than 20000, the analysis is for BigBite.
*If the replay number is greater than 20000, the analysis is for LHRS.
**Be sure to run show_all(<run number>) for each.

A list of minimum check items : (Item / {{pass|related online plots}})
# Check left-HRS VDC efficiency / {{pass|online("detectorL",run#)}}
# Check left-HRS VDC time / {{pass|online("detectorL",run#)}}
# Check BB chamber wire map / {{pass|online("detectorBB",run#)}}
# Check BB shower vs preshower ADC plot, threshold not changed / {{pass|online("physics",run#)}}
# Check scaler consistency  / {{pass|online("scalar",run#)}}
# Spot++ / {{pass|equavlent plots (raster current, BPMs) are included in online("detectorL",run#)}}

''Hint : You can try to do_all() the golden run to find out what a normal plots should look like''

== A list of known problems / possible bad runs ==
# BB chamber HV not on all the time.
# Left-arm VDC gas problem, low efficiency.
# Left-arm TDC shifts, symptom is current run and golden run shows significant difference in TDC times.

== Helpful Resources ==
* [[Analysis resources for transversity]]
* [[Online_Replay#Expert_Info|Expert Hints for Online Replay]]
* [http://hallaweb.jlab.org/experiment/E06-014/ Experiment D2n]
* [http://www.jlab.org/~adaq/halog/html/logdir.html Hall A Log]
* [http://hallaweb.jlab.org/experiment/transversity/rundb/db_halla_wei/ Run Data Base]