JEFFERSON LAB SEARCH
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Online Documentation for Running Hall-C
(username/password are available from Hall C Counting Room) -
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The Hall-C Moller Polarimeter measures the polarization of the electron beam arriving in Hall-C. It does so by observing the rate of production of Moller electrons at 90 degrees in the center of mass when the beam strikes a thin iron target. The outer shell electrons in the iron are polarized parallel (or anti-parallel) to the beam direction by a 4 Tesla magnetic field. The Moller electron production rate differs when the beam and target electron spins are aligned parallel or anti-parallel to one-another. Measurement of this rate difference provides a measure of the beam polarization.
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Posted on behalf of Brian Hanlon, Security and Services Manager
Security Incident Concern
At 7:18 p.m. on Wednesday, Oct. 7, 2020, a Jefferson Lab security officer conducting routine door checks found the front entrance door of the Radiation Calibration building was unlocked with the strike plate covered by a piece of tape. -
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Posted on behalf of the Finance Department
New 2020 Form W-4 for Federal Income Tax Withholding
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Posted on behalf of the Human Resources Benefits Consultant
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Posted on behalf of the Chief Operating Officer
Dear Colleagues,
It is my pleasure to announce some significant changes to the Environmental, Safety, Health and Quality Division for the coming year.
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Chip Starnes and Dolan Falconer, Co-Founders of Scantech Sciences, to Speak to Inventor Academy December 9