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    Beam Polarization and Polarimetry at EIC

    26 June 2020 to 1 July 2020
    online
    US/Eastern timezone

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    Contribution List

    39 out of 39 displayed
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    1. 11. Welcome
      Abhay Deshpande (Stony Brook University)
      26/06/2020, 08:00
    2. 12. Physics drivers for polarized beam
      Andrea Bressan
      26/06/2020, 08:15
    3. 13. EIC accelerator design
      Christoph Montag (BNL), Christoph Montag (BNL)
      26/06/2020, 08:45
    4. 15. Physics with polarized positrons
      Dr Eric Voutier
      26/06/2020, 09:15
    5. 20. Possibilities of polarized positrons
      Joe Grames (Jefferson Lab)
      26/06/2020, 09:45
    6. 18. What is planned at ILC
      Jenny List (DESY)
      26/06/2020, 10:35
    7. 2. Polarization Upgrade and Polarimetry at the SuperKEKB Facility
      Wouter Deconinck
      26/06/2020, 11:05
      Talk

      SuperKEKB is an unpolarized electron-positron collider designed for a luminosity of 8 × 1035 cm−2s−1 with a 4 GeV positron beam (Low Energy Ring - LER) and 7 GeV electron beam (High Energy Ring - HER). To enable precision measurements of the weak neutral couplings in the Belle II experiment, an upgrade is under consideration to polarize the HER to 70% by...

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    8. 9. Transparent Spin Mode for Polarized Beams in the EIC
      Yuri Filatov (MIPT)
      26/06/2020, 11:35
      Talk

      The transparent spin (TS) technique has been proposed as an efficient high-flexible method to control the beam polarization, from acceleration to long-term maintenance and real-time spin manipulation during an experimental run of a collider. Attractiveness of the TS method is that it allows for manipulation of the polarization using small insertions of weak magnetic fields (stationary or...

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    9. 16. Physics with polarized Deuterons
      Ellie Long (University of New Hempshire)
      26/06/2020, 13:00
    10. 19. Feasibility of Polarized Deuteron Beam
      Haixin Huang (Brookhaven National Lab)
      26/06/2020, 13:30
    11. 14. Polarised beams in particle colliders
      Mei Bai, Mei Bai (BNL)
      26/06/2020, 14:00
    12. 21. Discussion
      26/06/2020, 14:30
    13. 22. Experience from RHIC leading the way to EIC
      William Schmidke (BNL)
      29/06/2020, 08:00
    14. 23. Experience from COSY
      Frank Rathmann (Forschungszentrum Jülich)
      29/06/2020, 08:30
    15. 24. Elastic e-D scattering for deuteron polarimetry
      Barak Schmookler (Stony Brook University)
      29/06/2020, 09:00
    16. 25. He-3 polarimetry / polarised targets
      Gordon Cates (University of Virginia)
      29/06/2020, 09:30
    17. 4. Absolute polarization measurement of the 200 MeV proton beam at Linac.
      Andrei Poblaguev (BNL)
      29/06/2020, 10:30
      Talk

      The $200\,\mathrm{MeV}$ polarimeter at Linac is based on the elastic proton-carbon scattering at $16.2^\circ$ angle, where the analyzing power reaches almost absolute maximum which was experimentally established with high accuracy of $99.35\pm0.15\,\%$ . The elastically and inelastically scattered protons are clearly separated by the difference in the propagation through adjustable thickness...

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    18. 3. Development of absolute polarimeter for the low energy $\bf^3\mathrm{He}^{++}$ ion beam
      Mr Grigor Atoian (Brookhaven National Lab)
      29/06/2020, 11:00
      Talk

      For the Electron-Ion Collider, a polarized ${}^3\mathrm{He}^{++}$ ion source is being constructed at the Electron Beam Ionization Source (EBIS) of the Brookhaven National Laboratory. For precision determination of the ${}^3\mathrm{He}$ polarization, the ${}^3\mathrm{He}$ beam, after acceleration to 6 MeV at EBIS, will be elastically scattered off a gas ${}^4\mathrm{He}$ target. For such a...

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    19. 6. Can absolute polarization of the $^3\mathrm{He}$ beams at EIC be precisely measured by HJET?
      Andrei Poblaguev (BNL)
      29/06/2020, 11:30
      Talk

      A possibility to precisely measure absolute vertical polarization of the EIC ${}^3\mathrm{He}$ beams using the polarized hydrogen gas jet target (HJET) is discussed. By concurrent measurement of $a_h$ and $a_p$, the beam $h^\uparrow p$ and jet $p^\uparrow h$ spin asymmetries for the detected recoil protons, the He3 beam polarization can be approximated by $P_\mathrm{beam}=P_\mathrm{jet}\times...

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    20. 10. Light Ion Polarimetry at the EIC
      Ana Sofia Nunes (Brookhaven National Laboratory)
      29/06/2020, 13:00
      Talk

      Polarization of high energy proton beams has successfully been measured at RHIC with elastic proton-proton and proton-Carbon scattering. The analyzing power is not known from first principles and has to be measured.

      The observed background to the elastic scattering events needs to be much better understood because of the much shorter bunch spacing at EIC. This background can cause a simple...

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    21. 7. Light ion polarimetry at high energy
      Nigel Buttimore (Trinity College Dublin)
      29/06/2020, 13:15
      Talk

      Peripheral scattering of polarized proton, deuteron, and Helium-3 ions on light nuclei, and other nuclei, provides a method of evaluating the level of polarization of high energy beams. The asymmetry of recoils resulting from elastic collision can indicate the analyzing power required for polarimetry provided a number of quantities are known with sufficient accuracy.

      Among the items needed...

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    22. 8. Polarimetry based on forward neutrons in pA scattering
      William Schmidke (BNL)
      29/06/2020, 13:45
      Talk

      The PHENIX collaboration has observed a large azimuthal asymmetry
      of forward neutrons produced in polarized pA collisions. The data
      are well described by a model incorporating photons from the high Z
      nucleus photoproducing low mass baryonic states from the polarized
      proton. The model is based on well known electromagnetic effects and
      well measured photoproduction processes.

      We will...

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    23. 26. Improvement of proton polarization for EIC
      Vincent Schoefer (CAD)
      29/06/2020, 14:00
    24. 27. Polarized He3 in EIC
      francois meot (bnl)
      29/06/2020, 14:30
    25. 41. Bmad and PTC spin simulations
      David Sagan (Cornell)
      29/06/2020, 15:00
    26. 28. Discussion
      29/06/2020, 15:30
    27. 29. HERA Polarimetry (FP cavity in collider)
      Stefan Schmitt (DESY)
      01/07/2020, 08:00
    28. 30. Lepton polarimetry at JLab
      Kent Paschke (University of Virginia)
      01/07/2020, 08:30
    29. 31. Compton Polarimeter laser options
      Ciprian Gal (Stony Brook University)
      01/07/2020, 09:00
    30. 33. Precision Mott Polarimetry
      Tim Gay (University of Nebraska)
      01/07/2020, 09:30

      High-Precision 5 MeV Mott Polarimetry at CEBAF+
      T.J.Gay*
      University of Nebraska - Lincoln
      We report on the design and performance of a Mott polarimeter optimized for a nominal 5-MeV electron beam from the CEBAF injector. The rf time structure of this beam allows the use of time-of-flight in the electron detection, making it possible to isolate those detected electrons that originate from...

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    31. 32. Low-energy polarimetry
      Kurt Aulenbacher (Johannes Gutenberg Universitaet Mainz)
      01/07/2020, 10:15
    32. 34. Spin rotator design and spin matching
      Vadim Ptitsyn (C-AD, BNL)
      01/07/2020, 10:45
    33. 35. Compact spin rotator design
      Fanglei Lin (Thomas Jefferson National Accelerator Facility)
      01/07/2020, 11:15
    34. 36. EIC electron polarization studies
      Eliana Gianfelice (FNAL)
      01/07/2020, 11:45
    35. 39. Acceleration of electrons in RCS
      Vahid Ranjbar (BNL)
      01/07/2020, 13:15
    36. 38. Fast spin tracking and spin matching with stochastic one turn maps
      Oleksii Beznosov (University of New Mexico)
      01/07/2020, 13:45
    37. 37. IR related effects
      Vasiliy Morozov (Thomas Jefferson National Accelerator Facility)
      01/07/2020, 14:15
    38. 40. Discussion
      01/07/2020, 14:45
    39. 17. Spin transparent configuration
      Yuri Filatov (MIPT)