Compton Transmission Polarimeter

This R&D project is a collaboration between Brookheaven National Lab and Jefferson Lab to develop a Compton Transmission Polarimeter to be used with BNL Polarized SRF Gun.

Compton Transmission Polarimeter Meetings

• Meeting 1/27/22 - COMTRA - Updates on schedule, layout, radiator, DAQ, polarized target and simulation
• Meeting 1/20/22: organizational meeting for 2022 media:220120_COMTRA.pptx
• Meeting 7/16/21: media:Benjamin-71621.pdf

Project Documents

• (1/27/22) Added link describing the copper radiator built/installed at CEBAF for Bubble experiment, that we'd like to re-use at UITF
• Proposal: media:Proposal_Superconducting_RF_electron_gun.pdf
• Design of a Compton transmission polarimeter, Fernandes Neres Benjamin: media:CompPol_Optimization_B.Fernandes-Neres.pdf
• NP Accelerator R&D PI Exchange meeting on November 30, 2021, "Development of Beam Polarimeter for BNL SRF Gun": media:Accelerator_PI_Meeting_Nov2021_Electron_CompPol_BNL_SRF_Gun.pdf media:Accelerator_PI_Meeting_Nov2021_Electron_CompPol_BNL_SRF_Gun.pptx
• Quarterly Reports
  • FY 21:
    • Q1: media:NP Qtrly Report - Superconducting RF Electron Gun - Q1 2021 - Appendix A JLab Report.docx
    • Q2: media:NP Qtrly Report - Superconducting RF Electron Gun - Q2 2021 - Appendix A JLab Report.docx
    • Q3: media:NP Qtrly Report - Superconducting RF Electron Gun - Q3 2021 - Appendix A JLab Report.docx
    • Q4: media:NP Qtrly Report - Superconducting RF Electron Gun - Q4 2021.docx
  • FY 22:
    • Q1: media:NP Qtrly Report - Superconducting RF Electron Gun - Q1 2022.docx

References

• R Barday et al 2011 J. Phys.: Conf. Ser. 298 012022, Compton transmission polarimeter for a very precise polarization measurement within a wide range of electron currents media:Barday_2011.pdf

• H. Hoogduin, Electron, Positron and Photon Polarimetry, PhD Thesis 1997 media:Hoogduin1997.pdf (see chapter 2 and section on Geant)

• A. Adeyemi and E. Voutier, The Calibration of the PEPPo polarimeter for electrons and positrons, IPAC 2013 media:Adeyemi-IPAC2013-Proc.pdf

• E. Fanchini, The PEPPo e- & e+ polarization measurements, POSIPOL 2012 media:Fanchini_Posipol.pdf

• Townsend Zwart, Electron Polarimetry at MIT Bates (2000): [1]

BNL SRF Gun Beamline and Low Power Beam Dump

• From: Jean Clifford Brutus. In Dropbox [2]:

   Step file of the diagnostics beamline only (0021m0004) including a dwg drawing.
   Step file of the entire CeC beamline (0021m0003) including a dwg drawing.
   Pictures of the area.