The second installment of EG1 has completed the experimental program for the electron part of EG1. The run lasted from September 8, 2000, through April 20, 2001. About 23 Billion events were recorded on tape. Beam energies of 1.6-1.7 GeV, 2.3-2.6 GeV, 3.3 GeV, 4.2 GeV and 5.7 GeV were used. Data for the following experiments have been collected:

• Experiment E91-023 to measure polarized structure functions of the proton at low to moderate Q², in the resonance region and at higher W.
• Experiment E93-009 to measure polarized structure functions of the deuteron in the same kinematic region as E91-023. These two experiments together will explore the Q ²-dependence of the Gerasimov-Drell-Hearn sum rule for protons and neutrons.
• Experiment E93-036 to measure the helicity structure of single pion electroproduction, which is one of the dominant channels contributing to the inclusive polarized structure functions measured in E91-023.

Analysis links (partially restricted to collaboration members only)

• EG1 secure Website
• Shifeng's online run data base
• Run page (with links to documentation etc.)
• List of all runs
  
• Additional (offline) analysis links

Other useful (?) links

• From raw data to final Physics results (note written by S. Kuhn for EG1a inclusive analysis)
• Write-up of S. Kuhn's HUGS97 lecture series on DIS structure functions (Read me file)
• NEW: Some transparencies shown by S. Kuhn at the UVa QCD spin workshop 2002 (.pdf file)
• your link here
  

EG1 run group mailer list

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Send message to all EG1 collaborators.

Important note: To avoid excessive unwanted email traffic ("spam"), this list (like most JLab email lists) is only open to posting by subscribers. You have to send your post from the same computer (i.e., your "From:" address must be the same) as the one with which you subscribed (the list server is too "dumb" to recognize "similar" addresses or names). To find out under which account/email address you are subscribed, send email to majordomo@jlab.org with a single line in the message body (not the subject): "who eg1_run". This lists all subscribers with their actual email addresses used to subscribe. If you want to change your subscription information, click on the link "Subscribe" above for instructions. You might want to remove your old address (to avoid multiple messages each time someone posts to the list) as well as subscribe with a new one. Alternatively, leave the subscription information as it is, but make sure you use the same computer you originally subscribed from to send your post. If you use a pop-mail server etc. like Outlook or Netscape or Pegasys etc., you can specify in your "preferences" what your "From: " (= "email") address should be. Again, make it the same as your subscription address.
If you submit a message to the list with the wrong originating email/" From:" address, it will BOUNCE. Only the list owner ( Sebastian Kuhn ) but not you will be notified if an email bounces (this is maybe a flaw of the present system). I will try to inform you right away if this happens, but you will have to resubmit the message properly (I will only do this for you in cases of great urgency). Also, to be sure, it is always good to check whether you received your own posting within a few minutes - if not, it likely bounced.

Important Runtime information

Technical drawings

Target Pictures

Upcoming Meeting(s):

• EG1b analysis meetings are held every week, Wednesdays at 10:00 a.m., in room B101 CEBAF Center. They alternate between "cooking and calibration"-centered meetings and "Physics analysis" meetings..

Minutes of previous meetings

• EG2000 collaboration meeting January 24, 2000

Return to the "old" EG1a Website
Return to the Hall B Website .