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<big> <font color="" size="+3"> PREX  Wiki </font></big>This page is under construction (Oct 28 2009).
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{| cellpadding=5 style="margin:7px 30px 0 30px; <!--
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  --> float:right; border:1px solid #AA6633"
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|- bgcolor="#fbfeff"
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| [[Contact_Information | PREX Contact Information]]
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| [[Hall A Phone Book | Hall A Phone Book]]
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|[[PREX_wiki_info | PREX Wiki Info]]
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|-
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|[[Main_Page_2010 | Old Main Page]]
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|-
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|[[Documentation]]
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|-
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| [[HOW TOs | HOW TOs for shift crew]]
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|-
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| [[Expert Tools]]
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|}
  
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Welcome to the <big>  PREX/CREX  Wiki </big>!
  
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<p>The Lead Radius Experiment ("PREX"), experiment number E06002, uses the parity violating
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The purpose of this Wiki is to organize information relevant to the running experiment, and to foster communication and collaboration. For more information, see the webpage at [http://hallaweb.jlab.org/parity/prex Lead Radius Experiment ("PREX")] or .
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weak neutral interaction to probe the neutron distribution in a heavy nucleus, namely 208Pb,
 
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thus measuring the RMS neutron radius to 1% accuracy, which has an important impact on nuclear
 
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theory. The experiment is being performed by the HAPPEX collaboration which has recently completed
 
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experiments E99115 & E00114  -- i.e. HAPPEX II and HAPPEX Helium. </p>
 
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<br>
 
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<p>Spokespersons:  Krishna Kumar (U. Mass),    Paul Souder  (Syracuse),  Robert Michaels (JLab),  Guido Urciuoli (INFN). </p>
 
  
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__FORCETOC__
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If you are looking for the March 18-20th Hall A beam tests information please go to: [[190318BeamTests| webpage]]
  
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'''Please find the PREX II Wiki Main page [[Main_Page_PREXII|HERE]]'''
  
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== Proposal and Updates ==
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'''Find the Covid-19 restoration plan [https://physdiv.jlab.org/2020MedConOps/20200529-ResumptionPlan.pdf here (May 29th)]'''
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__NOTOC__
  
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<UL>
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== CREX Shift Information ==
  
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<LI> [http://hallaweb.jlab.org/parity/prex/pbup2005.ps 2005 Proposal Update] (Postscript), and [http://hallaweb.jlab.org/parity/prex/pbup2005.pdf Same, PDF].
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Contact information
  
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<LI> [http://hallaweb.jlab.org/parity/prex/pbup2002.ps 2002 Proposal Update]
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*Direct Counting-House Always-On Bluejeans connection: https://bluejeans.com/779147679. Also by phone dial 18882402560, key in 779147679 ##.
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<LI> [http://hallaweb.jlab.org/parity/prex/pbpro.ps Original Proposal] (Dec 1999).
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*RC phone: 757-876-1787
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</UL>
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*Cordless phone (Target Operator): 757-269-5658
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*Shift leader phone (try not to use this):  757-269-5501
  
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== Related Physics Info ==
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Useful links
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<font color="Black">
 
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<UL>
 
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<LI> Paper on [http://hallaweb.jlab.org/parity/prex/neutron_density.ps Parity Violating Neutron Densities] published in <font color="blue">Phys. Rev. C63, 025501 (2001).</font> Cited 100 times according to SPIRES (Oct 2008).
 
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<LI> 1-Page Experiment Summary for the Public [http://hallaweb.jlab.org/parity/prex/prex_summary.ps Postscript] or [http://hallaweb.jlab.org/parity/prex/prex_summary.pdf PDF]
 
  
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<LI> [http://hallaweb.jlab.org/parity/prex/PREX_EINN05.ppt EINN 2005 Poster] about PREX (powerpoint).
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* [https://docs.google.com/spreadsheets/d/1PmtPS-q1BRj0tm99sO2sphhzQAApJ68pOnop6wm8GQU/edit#gid=0 Restore Crex Checklist] (June-July 2020)
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<LI> [http://cecelia.physics.indiana.edu/Parity/Pb/references.html References from C. Horowitz] (needs to be updated).
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* [https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=PREX/CREX Shift schedule]
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<LI> <font color="blue"> The 2008 PREX workshop </font>
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* [https://docs.google.com/spreadsheets/d/1XL5UY-VVrMkUwjbNzQ7xb6f4rYyqHwUpd034jckEjq0/edit#gid=662941510 Analysis shifts]
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<UL>
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* [[Information for Shift Takers | '''Information for Shift Takers''']]
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<LI> List of [http://conferences.jlab.org/prex/program.html 2008 PREX Workshop talks].
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* [[Run Coordinator Tools]]
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* [[Weekly Analysis Coordinator]]
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* [[RunPlanDaily_CREX | Daily Run Plan (CREX)]]
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* [[CommissioningSummary | PREX2-and-CREX Commissioning Summary]]
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* [[CREXRunPlan-August20 | CREX Summer Global Run Plan ]] and [[CREXAuxiliaryMeasurements-Aug2020 | Auxiliary Run Plan]]
  
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<LI> Here is [http://olivia.iucf.indiana.edu/%7Echuck/prex C. Horowitz's page] on the workshop.
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== Meetings ==
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</UL>
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<LI> The [http://media4.physics.indiana.edu/%7Echarlie/parity/index.html Trento 2000 Workshop] on Parity Violation.
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{| class="wikitable" border="1" style="width:100%; text-align:center;border-collapse:collapse"
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</UL>
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|-
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</font>
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! style="width:8%"|  [[Daily Meetings | Daily ]] || style="width:8%"| [[PREX/CREX Collaboration Meetings  | Collaboration]] || style="width:8%"| [[HRS_Optics_Mtg | Optics ]] || style="width:8%"| [[DAQ_Meeting | DAQ ]] || style="width:8%"| [[Analyzer_Meeting | Analyzer ]] ||  style="width:8%"| [[BMOD | BMOD ]] || style="width:8%"| [[PREX2_Analysis | P2 Analysis ]] ||style="width:8%"| [[PREX/CREX Transverse | Transverse]] || style="width:8%"| [[Other meetings | Other]]  
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|}
  
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== Status and Plans ==
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== Planning for 2020 Summer Run ==
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[[File:mascot_2.jpg|thumb|200px|right| PREX Mascot]]
  
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<font color="Black">
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* Upcoming Schedule  -- <b><span style ="color:red">updated July 1, 2020</span></b> --
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<UL>
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** CREX Run starts Friday July 31
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<li> A [http://hallaweb.jlab.org/parity/prex/worklist.html work list] &nbsp; (updated May, 2009) &nbsp; which supercedes Paul Souder's [http://hallaweb.jlab.org/parity/prex/pb_tasks_0306.pdf old work list] necessary to perform the experiment.  <font color="red">Schedule is March 2010 !</font>
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* [https://docs.google.com/spreadsheets/d/1PmtPS-q1BRj0tm99sO2sphhzQAApJ68pOnop6wm8GQU/edit#gid=0 Restore CREX Checklist] summer 2020
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</li>
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* [[ComingBackJLab|Things to do to come back to JLab after COVID-19]]
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<li> An index of [http://hallaweb.jlab.org/experiment/HAPPEX/minutes.html Meeting Minutes and Talks]
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* [[Task-List-Landing | TaskList]] for 2019 (somewhat obsolete)
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* [https://photos.app.goo.gl/4ju3cTnax3BKFgS98 CREX Installation Photo Album]
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* [https://photos.app.goo.gl/wYxbx9VZjKDarMuUA PREX Installation Photo Album]
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* [[RunPlanDaily_CREX|CREX Daily Run Plan]]
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* [[CREXRunPlan-August20|CREX August 2020 Global Run Plan]]
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* [[CREXRunPlan|CREX Global Run Plan]]
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* [[PostTargetRecoveryRunPlan|Post Target Recovery Run Plan]]
  
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</li>
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== Useful Links ==
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<li> Working on a new [http://hallaweb.jlab.org/parity/prex/hamc Monte Carlo].
 
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</li>
 
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<li>
 
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Here are recent (Dec 5, 2007) [http://hallaweb.jlab.org/parity/prex/adc18 diagrams of the 18-bit ADC] &nbsp; and the somewhat older
 
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[http://hallaweb.jlab.org/parity/prex/ADC_18bit.pdf schematic] from Fernando Barbosa.
 
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</li>
 
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<li>
 
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Here is Paul's [http://hallaweb.jlab.org/parity/prex/paul_transverse.pdf note on slits for transverse] asymmetry systematic (March, 2009). 
 
  
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</li>
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[https://docs.google.com/spreadsheets/d/1SngpqgLLULtcuKD0t9k-A2Cpmxy1jb5bIYnnP8f8zPM/edit?usp=sharing opticsSpreadSheet]
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<li> Info about the <font color="blue">Septum</font>
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[https://prex.jlab.org/wiki/images/f/fc/Shift.pdf Table for offline runlist]
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<ul>
 
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<li> Here is a [http://hallaweb.jlab.org/parity/prex/prex_magnet.pdf Test plan for Septum] magnet to be done in <font color="blue"> Nov 2009 </font>.
 
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</li>
 
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<li> Some [http://www.jlab.org/%7Emhodges drawings of the 5 degree septum] &nbsp; courtesy M. Hodges. &nbsp; See also sept*.pdf in &nbsp;  [http://hallaweb.jlab.org/parity/prex/pics pics]
 
  
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</li>
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[[P2ComptonAnalysis | ComptonAnalysisSummary]]
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</ul>
 
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</li>
 
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<li> Info about the <font color="blue">Collimator</font>
 
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<ul>
 
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<li> Overview of [http://hallaweb.jlab.org/parity/prex/paul_collim.xfig.pdf collimator] to put in the mouth of Q1.
 
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</li>
 
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<li> Some [http://hallaweb.jlab.org/parity/prex/paul_collim_spec.xfig.pdf specs for collimator] to help engineer it.
 
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</li>
 
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<li> Possible way to [http://hallaweb.jlab.org/parity/prex/photon_top.xfig.pdf stop 2-bounce photons]
 
  
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</li>
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{| class="wikitable" border="1" style="width:100%; text-align:center;border-collapse:collapse"
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<li> The specification to [http://hallaweb.jlab.org/parity/prex/paul_collim_taper.xfig.pdf taper the sides] to reduce slit scattering.
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|-
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</li>
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! style="width:10%"| [https://prex.jlab.org/wiki/index.php/Category:HOW_TO HOWTO]
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</ul>
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! style="width:9%"| [https://hallaweb.jlab.org/rcdb/ RCDB]
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</li>
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! style="width:9%"| [https://logbooks.jlab.org/book/halla HALOG]
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<li> Target Info
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| style="width:9%"| [http://ace.phys.virginia.edu/HAPPEX/ HAPLOG]
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<ul>
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| style="width:9%"| [https://prex.jlab.org/cgi-bin/DocDB/private/DocumentDatabase DocDB]
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<li> <font color="blue">Oct 2009</font> &nbsp; Proposed target ladder:
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| style="width:9%"| [https://hallaweb.jlab.org/wiki/index.php/Main_Page Hall A Wiki]
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<ul>
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| style="width:9%"| [https://hallaweb.jlab.org/dvcslog/compton/ compton]
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<li> During the &nbsp; [http://hallaweb.jlab.org/parity/prex/prex_target_optics.xfig.pdf optics and calibration phase]
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| style="width:9%"| [https://hallaweb.jlab.org/equipment/moller/ Moller Main], [https://hallaweb.jlab.org/equipment/moller/data Moller Data]
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| style="width:9%"| [https://logbooks.jlab.org/book/polog POLOG]
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</li>
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| style="width:9%"| [https://hallaweb.jlab.org/halog/screen_snapshots/controls/ Live Status], [https://hallaweb.jlab.org/halog/screen_snapshots/target/ Target]
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<li> During the &nbsp; [http://hallaweb.jlab.org/parity/prex/prex_target.xfig.pdf production mode]  
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| style="width:9%"| [https://hallaweb.jlab.org/parity/prex/onlinePlots/ Online Prompt]
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</li>
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|}
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</ul>
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[[Category:Task List]]
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</li>
 
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<li> [http://hallaweb.jlab.org/parity/prex/prex_tgt.doc Target info] for the Jan 2008 test run.
 
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</li>
 
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<li>Here are
 
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[http://www.jlab.org/%7Emiller/PREX_E06002 Design Drawings from J. Miller]. &nbsp; And here are [http://hallaweb.jlab.org/parity/prex/pics/pbtgt.html assembly pics] (was for the Jan 2008 test run)
 
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</li>
 
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<li> Early tests Pb target.  &nbsp; See [http://hallaweb.jlab.org/parity/prex/lead_target.ps diagram of target] &nbsp; and &nbsp; [http://hallaweb.jlab.org/parity/prex/pbtgt_test.ps writeup about test] (postscript) &nbsp; and [http://hallaweb.jlab.org/parity/prex/pbtgt_test.pdf same, PDF]
 
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</li>
 
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</ul>
 
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</li>
 
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<li> Polarimetry is crucial.
 
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<ul>
 
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<li> Here is a [http://hallaweb.jlab.org/parity/prex/mollfadc.pdf specification for Moller FADC] DAQ.
 
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</li>
 
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<li> In 2003 JLab held a [http://www.jlab.org/polarimetry/program.html Polarimetry Workshop]
 
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</li>
 
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<li> There is an idea to use [http://www.jlab.org/%7Egen/hyd atomic hydrogen polarimetry].
 
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</li>
 
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<li> Here is a [http://hallaweb.jlab.org/parity/prex/compton_upgrade.pdf draft of plans to upgrade] &nbsp; the &nbsp; [http://hallaweb.jlab.org/compton Compton polarimeter].
 
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</li>
 
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</ul>
 
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</li>
 
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<li> In Nov 2005 we had a 2 day run to test all aspects of the experiment at ~850 MeV. &nbsp; Results were explained in the 2005 propsal update (see talks, below).
 
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</li>
 
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</UL>
 
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</font>
 
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== Talks (including seminars and PAC Defenses==
 
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<font color="Black">
 
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<UL>
 
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<li> Here was the recent [http://conferences.jlab.org/prex/program.html PREX workshop 2008] held at [http://www.jlab.org JLAB].
 
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</li>
 
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<li> Here are some [http://hallaweb.jlab.org/parity/prex/prextalks.html talks] about PREX at workshops, etc.
 
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</li>
 
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<li> An index of [http://hallaweb.jlab.org/experiment/HAPPEX/minutes.html Collaboration Meetings and Weekly  Meetings] &nbsp; plus some [http://hallaweb.jlab.org/parity/mtg older stuff].
 
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</li>
 
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</UL>
 
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</font>
 
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== Slides ==
 
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<font color="Black">
 
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<UL>
 
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<LI>
 
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Here are some [http://hallaweb.jlab.org/parity/prex/oldslides.html old transparencies].
 
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</LI>
 
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</UL>
 
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</font>
 
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== External Links ==
 
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<UL>
 
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<LI> [http://hallaweb.jlab.org/parity/prex PREX experiment]
 
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<LI> [http://conferences.jlab.org/prex/program.html 2008 PREX Workshop]
 
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</UL>
 
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== Contributing to the PREX wiki ==
 
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* To get a new account: click login.
 
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* Where the page invites you to obtain an account click "request one" and follow the instructions.
 
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* I'll get an e-mail, will approve you and you'll get a password by e-mail.
 
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Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.
 
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<big>'''MediaWiki has been successfully installed.'''</big>
 
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== General Info about Wiki ==
 
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* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
 
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* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
 
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* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
 

Latest revision as of 14:51, 1 November 2022

PREX Contact Information
Hall A Phone Book
PREX Wiki Info
Old Main Page
Documentation
HOW TOs for shift crew
Expert Tools

Welcome to the PREX/CREX Wiki !

The purpose of this Wiki is to organize information relevant to the running experiment, and to foster communication and collaboration. For more information, see the webpage at Lead Radius Experiment ("PREX") or .

If you are looking for the March 18-20th Hall A beam tests information please go to: webpage

Please find the PREX II Wiki Main page HERE

Find the Covid-19 restoration plan here (May 29th)


CREX Shift Information

Contact information

  • Direct Counting-House Always-On Bluejeans connection: https://bluejeans.com/779147679. Also by phone dial 18882402560, key in 779147679 ##.
  • RC phone: 757-876-1787
  • Cordless phone (Target Operator): 757-269-5658
  • Shift leader phone (try not to use this): 757-269-5501

Useful links

Meetings

Daily Collaboration Optics DAQ Analyzer BMOD P2 Analysis Transverse Other

Planning for 2020 Summer Run

PREX Mascot

Useful Links

opticsSpreadSheet Table for offline runlist

ComptonAnalysisSummary

HOWTO RCDB HALOG HAPLOG DocDB Hall A Wiki compton Moller Main, Moller Data POLOG Live Status, Target Online Prompt
Retrieved from "https://prex.jlab.org/wiki/index.php?title=Main_Page&oldid=12919"