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Title: High intensity polarized H(-) ion source for the RHIC SPIN physics

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1326754
Report Number(s):
BNL-112648-2016-CP
R&D Project: KBCH139; 18033; KB0202011
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 5th International Symposium on Negative Ions, Beams and Sources (NBIS16); St. Anne s College, Oxford, UK; 20160912 through 20160916
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Zelenski A., Atoian, G., Raparia, D., Ritter, J., Kolmogorov, A., and Davydenko, V. High intensity polarized H(-) ion source for the RHIC SPIN physics. United States: N. p., 2016. Web.
Zelenski A., Atoian, G., Raparia, D., Ritter, J., Kolmogorov, A., & Davydenko, V. High intensity polarized H(-) ion source for the RHIC SPIN physics. United States.
Zelenski A., Atoian, G., Raparia, D., Ritter, J., Kolmogorov, A., and Davydenko, V. 2016. "High intensity polarized H(-) ion source for the RHIC SPIN physics". United States. doi:. https://www.osti.gov/servlets/purl/1326754.
@article{osti_1326754,
title = {High intensity polarized H(-) ion source for the RHIC SPIN physics},
author = {Zelenski A. and Atoian, G. and Raparia, D. and Ritter, J. and Kolmogorov, A. and Davydenko, V.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 9
}

Conference:
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  • In collaboration with the Max-Planck-Institut (MPI) fuer Kernphysik in Heidelberg and the University of Marburg we presently design and construct a high intensity polarized atomic beam source. It is intended to deliver 1*10{sup 17} atoms/sec in one hyperfine state into a storage cell for FILTEX. FILTEX is an abbreviation for FILTer EXperiment aiming to polarize storage ring beams. The structure and the vacuum chambers of this source are completed and installed at the Heidelberg Test Storage Ring (TSR). Vacuum pumps, gauges etc. are mounted and partly connected to a logical operation system. When atomic beam nozzle and skimmer geometries andmore » distances as well as the nozzle temperature are optimized, the final geometrical arrangement or our new hybrid sixpole magnets will be decided and the whole source should be completed by the end of 1989.« less
  • International workshop on II Polarized Partons at High Q2 region 11 was held at the Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan on October 13-14, 2000, as a satellite of the international conference ''SPIN 2000'' (Osaka, Japan, October 16-21,2000). This workshop was supported by RIKEN (The Institute of Physical and Chemical Research) and by Yukawa Institute. The scientific program was focused on the upcoming polarized collider RHIC. The workshop was also an annual meeting of RHIC Spin Collaboration (RSC). The number of participants was 55, including 28 foreign visitors and 8 foreign-resident Japanese participants, reflecting the international naturemore » of the RHIC spin program. At the workshop there were 25 oral presentations in four sessions, (1) RHIC Spin Commissioning, (2) Polarized Partons, Present and Future, (3) New Ideas on Polarization Phenomena, (4) Strategy for the Coming Spin Running. In (1) the successful polarized proton commissioning and the readiness of the accelerator for the physics program impressed us. In (2) and (3) active discussions were made on the new structure function to be firstly measured at RHIC, and several new theoretical ideas were presented. In session (4) we have established a plan for the beam time requirement toward the first collision of polarized protons. These proceedings include the transparencies presented at the workshop. The discussion on ''Strategy for the Coming Spin Running'' was summarized by the chairman of the session, S. Vigdor and G. Bunce.« less
  • New techniques for the production of polarized electron, H{sup -} (proton), D (D+) and {sup 3}H{sup ++} ion beams are discussed. Feasibility studies of these techniques are in progress at BNL. An Optically Pumped Polarized H{sup -} Ion Source (OPPIS) delivers beam for polarization studies in RHIC. The polarized deuteron beam will be required for the deuteron Electron Dipole Moment (EDM) experiment, and the {sup 3}H{sup ++} ion beam is a part of the experimental program for the future eRHIC (Electron Ion) collider.
  • A high intensity duoplasmatron was constructed, and two different extraction systems were used with this ion source to produce positive ion beams for a Lamb-shift source. The multiaperture system consists of a 2 cm dia hexagonal array of 55 apertures, each 2.2 mm dia, in three aligned electrodes. Total extracted beam with this system is typically 50 mA. A 1.1 kV D$sup +$ ion beam of 24 $mu$A is delivered to a 1.25 cm dia suppressed Faraday cup 160 cm from the ion source. The single-aperture system consists of two 70$sup 0$ conical electrodes separated by a flat 3.2 mmmore » thick electrode with a 6.3 mm dia aperture at the center. Total extracted beam with this system is typically 10 mA. A beam intensity of 11.5 $mu$A is observed at the Faraday cup. Arc currents during these measurements are typically 20 A. Polarized beam quality with the single- aperture extraction system is far superior to that corresponding to the multiaperture system. Factors contributing to this result are discussed. (auth)« less