Bubble Chamber Beam Test August 2015

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Emittance Measurements, September 3, 2015

  • We measured (normalized) emittance and Twiss parameters for the horizontal and vertical planes as a function of momentum (6.7, 7.7 and 8.3 MeV/c).
  • The results from a previous measurements is summarized in JLAB-TN-14-004T: Transverse Beam Characterization in the CEBAF 5 MeV Region

media:TN-14-004.pdf media:TN-14-004.docx



Beam Charge

This is a test of 5D line, the chamber is off.


  1. Beam Optics to 5D
  2. Measure beam charge
  3. Maximum 1/4 Cryo-unit gradients
  4. Measure beam energy