A novel approach for a spin-exchange high density {sup 3}He target

Journal Article · Tue Jan 20 04:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.55034· OSTI ID:21182453

Welsh, Robert C; Zerger, John N; Coulter, Kevin P; Smith, Todd B; Chupp, Timothy E ^[1]

---

1. Physics Department, Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109 (United States)

In the past decade high density polarized {sup 3}He fixed targets based on spin-exchange with optically pumped Rb have been used successfully in electron scattering experiments at MIT/Bates and SLAC, as a neutron polarizer, and with proton and pion beams at TRIUMF. In the near future similar targets will be used in physics programs at TJNAF and as neutron polarizers at Los Alamos. Until now, the typical spin exchange target was a sealed design, however there are several advantages to target cells that can be evacuated and filled with a variable pressure of polarized {sup 3}He. We have begun development of such an actively filled target, based on technology recently developed for NMR/MRI with hyperpolarized noble gases. The benefits and difficulties of constructing such a 'flowing' high density {sup 3}He target system are discussed.

• OSTI ID: 21182453
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 421; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
DESIGN
ELECTRONS
HELIUM 3
HELIUM 3 TARGET
MIT BATES LINAC
NMR IMAGING
NUCLEAR MAGNETIC RESONANCE
PION BEAMS
POLARIZATION
PROTON BEAMS
RUBIDIUM
SCATTERING
SPIN EXCHANGE
STANFORD LINEAR ACCELERATOR CENTER
TRIUMF CYCLOTRON