- !!- Back up ofadaq cluster />All backupfiles are on ifarm work disk:/w/work3503/e02013/GEn/adaq.bk/adaq
+ Welcometo the Hall AE02-013 GEn experimentwiki page!
- * ~adaq/e02013 (withoutlinks to external filesystemsand rootfiles) />* ~a-onl/crl (trigger configuration)r />* ~a-onl/scaler(scalerdatadumped)r />*~a-onl/scripts(scriptsto put epicsvariables into data stream) />*~adev/slowc (containsHVmaps)
+ Experiment E02-013 ismeasuring the electric form-factorof the neutron(GEn) with a double-polarizationtechnique. Polarized electrons arequasi-elastically scattered off theneutroninpolarizedHelium-3nuclei, and the final stateis exclusively selectedby detectingthe electron and neutron.
- !!+ Documentation !!! ((GEnDocChannelMap|GEn hardware connection scheme)) />!!! ((GEnDocEpics|Epics variables)) />!!! ((GEnDocTrigger|Triggerschemes))<br/>!!!+ GEn Raw Data Structure (by Robert Michaels)r />!!!!- Overview />The raw data structure recorded in the GEn DAQ datastreamwill be described. This includesthe following data: # Event data recorded with each accepted trigger (fastbus and VME data from the two spectrometers and from the BPM and raster) # scalers # EPICS information # "special events" which are insertedonce or infrequently during a run, such as prescale informationand detector map.
+ This site is highlyunorganized, but we are trying to fix that. Please just deal with the clutter for now.
- These data are decoded by the Podd Analyzer classes developed for GEn, see also GEn Analyzer documentation. I won't go into that here, but sufficeit to say you need anup-to-date database with correct crate map and detector maps.
+ !!((AnalysisMeetings|Meetings and minutes))
- Iwill not describethe various other datastreams in HallA,such as Moller polarimeter, e-Penergy measurement,Compton Polarimeter, etc.
+ !!Base Equipment<br/>* The ((NeutronDetector|NeutronDetector known as BigHand)) />*The ((BigBite))Spectrometer />*The ((Target))of polarized Helium-3 and the reference cells
- !!!! ((CodaDataFormat|CODA Data Format)) !!!! ((GEnCreateListing| List ofCreates for GEn)) !!!! ((EventDecoder|Event Decoder)) !!!! ((GEnEventFlags|EventFlags)) !!!! ((GEnDataFormatScalers|Scalers)) !!!! ((GEnDataFormatROC23Scalers|Event ReadoutofScalers in ROC23)) !!!!((GEnDataFormatTS|Trigger Supervisor Create -ROC28)) !!!! ((GEnDataFormatEpics|EPICSInformation)) !!!! ((GEnDataFormatSpecialEvents|Special Events))
+ !! Analysis Categories and Issues * ((BigBite Tracking and Drift Chamber Global Variables)) * ((Neutron Detector Analysis)) />* ((Monte Carlo|Monte CarloReports and Package Documentation)) * ((D.ctimeL1A|What is that D.ctimeL1Avariable?)) * ((Livetime|Howto calculate the different livetimes)) * ((Scalers for GEn)) (in progress) * ((AsymmetryCorrections|Corrections toapply to theraw asymmetry)) * Proposed ((GEnDB|GEn SQL database)) /> !! Theory * ((Theory Topics|Bi-weekly Meeting Theory Topics))
!! Replays of the data: * ((Kin4:Pass1|Kin4's replay with alist of targetsand run numbers)) * ((Pass0|Original Pass0 Online replay of the data))
!! Looking fora run? Brandon's log of theruns taken in thedifferent kinematic settings and conditions is available here:[http:tiki-download_file.php?fileId=14|gen_runlog_brandon.txt(31.33 Kb)]
!!+Running Conditions and DAQ formats * ((AdaqBackup|Back up of adaq cluster)) * [http://hallaweb.jlab.org/experiment/E02-013/wiki/tiki-page.php?pageName=GEnRawDataStructure|GEn Raw Data Structure (by Robert Michaels)]r />* ((GEnDocChannelMap|GEn hardware connectionscheme)) * ((GEnSpecialEvents|Specially inserted events explained)): prescale factors, threshods, epics variables, high Voltages, ((GEnDocEpics|Epicsvariables)) * ((GEnDocDiag|GEn trigger and connection diagrams/schemes)) * [http:../RunPlan06/runplan.ps|Experiment run plan]
!! ((GEnNMRData|GEn Target NMR measurments))
!! Simple tools/scripts (NOT for calibration) * GNUPLOT nucleon Form-factor, cross-section and asymmetry formulas:[http:tiki-download_file.php?fileId=19|nucleonFF.gnuplot (2.83 Kb)]