Difference between revisions of "Main Page"

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<li> [http://hallaweb.jlab.org/parity/prex/#PREXStatus more details on status]
 
<li> [http://hallaweb.jlab.org/parity/prex/#PREXStatus more details on status]
  
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<li> Working on a new [http://hallaweb.jlab.org/parity/prex/hamc Monte Carlo].
 
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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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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><font color="green">SEPTUM</font>
 
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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> 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><font color="green">COLLIMATOR</font>
 
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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> Some [http://hallaweb.jlab.org/parity/prex/paul_collim_spec.xfig.pdf specs for collimator] to help engineer it.
 
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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> 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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<li><font color="green">TARGET</font>
 
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<li> <font color="blue">Oct 2009</font> &nbsp; Proposed target ladder:
 
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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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<li> During the &nbsp; [http://hallaweb.jlab.org/parity/prex/prex_target.xfig.pdf production mode]
 
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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>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> 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> Polarimetry is crucial.
 
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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> In 2003 JLab held a [http://www.jlab.org/polarimetry/program.html Polarimetry Workshop]
 
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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> 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> 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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== Talks (including seminars and PAC Defenses)==
 
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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> Here are some [http://hallaweb.jlab.org/parity/prex/prextalks.html talks] about PREX at workshops, etc.
 
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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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== Slides ==
 
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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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== External Links ==
 
== External Links ==
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<UL>
 
<UL>
 
<LI> [http://hallaweb.jlab.org/parity/prex PREX experiment web site]
 
<LI> [http://hallaweb.jlab.org/parity/prex PREX experiment web site]
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<LI> [http://hallaweb.jlab.org/parity Parity in Hall A]
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<li> [http://hallaweb.jlab.org Hall A]
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<li> [http://www.jlab.org/~adaq/halog/html/logdir.html Hall A Logbook]
 
<LI> [http://conferences.jlab.org/prex/program.html 2008 PREX Workshop]
 
<LI> [http://conferences.jlab.org/prex/program.html 2008 PREX Workshop]
 
</UL>
 
</UL>
  
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== Contributing to this PREX wiki ==
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== How to Contribute to this PREX Wiki ==
  
 
* To get a new account:  click login.
 
* To get a new account:  click login.
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Revision as of 14:57, 28 December 2009

PREX Wiki

The Lead Radius Experiment ("PREX"), experiment number E06002, uses the parity violating weak neutral interaction to probe the neutron distribution in a heavy nucleus, namely 208Pb, thus measuring the RMS neutron radius to 1% accuracy, which has an important impact on nuclear theory.


Spokespersons: Krishna Kumar (U. Mass), Paul Souder (Syracuse), Robert Michaels (JLab), Guido Urciuoli (INFN).


Physics Info


Status and Plans

Retrieved from "https://prex.jlab.org/wiki/index.php?title=Main_Page&oldid=54"