Polarization preservation of polarized deuteron beams in the electron ion collider at Brookhaven National Laboratory

Journal Article · 10 February 2020 · Physical Review Accelerators and Beams

DOI: https://doi.org/10.1103/PhysRevAccelBeams.23.021001 · OSTI ID:1599496

Huang, H. ; Méot, F.; Ptitsyn, V.; Ranjbar, V.; Roser, T.

The physics program at the future electron ion collider (EIC) calls for polarized neutron beams at high energies. The best neutron carriers are ³He nuclei and deuterons. Both neutron carriers are expected to be utilized by the spin physics program in the EIC. Owing to the small magnetic moment anomaly of a deuteron particle, significantly higher magnetic fields are required for spin rotation, so that full Siberian snakes are not feasible. However, the resonance strengths are weak, and the number of resonances is small. It is possible to deal with individual resonances using conventional methods such as a betatron tune jump and vertical ac dipole for intrinsic depolarizing resonances, and a weak partial snake for imperfection resonances. This study employed a realistic magnet ramp rate and parameters (both transverse and longitudinal emittances, as well as realistic lattices) to show that it is possible to accelerate polarized deuterons beyond 100 GeV/n. This paper summarizes the details of the feasibility of a polarized deuteron beam for the future EIC at Brookhaven National Laboratory.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• Grant/Contract Number: AC02-98CH10886; SC0012704
• OSTI ID: 1599496
• Report Number(s): BNL--213707-2020-JAAM; 021001
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 2 Vol. 23; ISSN 2469-9888; ISSN PRABCJ
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English