Optically pumped polarized H/sup -/ ion source

Journal Article · Thu Mar 01 04:00:00 EST 1984 · AIP Conf. Proc.; (United States)

DOI:https://doi.org/10.1063/1.34405· OSTI ID:5934883

Mori, Y; Ikegami, K; Takagi, A; Igarashi, Z; Fukumoto, S; Cornelius, W; York, R

Optically pumped polarized H/sup -/ ion source has been developed for the 12 GeV proton synchrotron at KEK. Sodium atoms are electron-spin polarized by two single frequency dye lasers. Protons, which are yielded by an ECR ion source, receive the polarized electrons from the sodium atoms and are polarized by conventional zero-crossing method. The hydrogen atoms become H/sup -/ ions by charge-exchange reaction with sodium vapor. Beam intensities and polarizations so far achieved are 15 ..mu..A with 60 % and 25 ..mu..A with 40 % at 350 keV. The intensity increases recently to 30 ..mu..A and the beam is accelerated to 20 MeV by the linac and injected in the 500 MeV booster synchrotron. The polarization is 45approx.56 % at 20 MeV.

• Research Organization: National Laboratory for High Energy Physics, Los Alamos National Laboratory
• OSTI ID: 5934883
• Report Number(s): CONF-831180-
• Journal Information: AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 111:1; ISSN APCPC
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ACCELERATION
ACCELERATORS
ALKALI METALS
ANIONS
CHARGE EXCHANGE
CHARGED PARTICLES
CYCLIC ACCELERATORS
CYCLOTRON RESONANCE
DATA
DYE LASERS
ELECTRON CYCLOTRON-RESONANCE
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FABRICATION
FLUIDS
GASES
GEV RANGE
GEV RANGE 10-100
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
INFORMATION
ION SOURCES
IONS
LASERS
LIQUID LASERS
METALS
NUMERICAL DATA
OPTICAL PUMPING
ORIENTATION
PUMPING
RESONANCE
SODIUM
SPIN ORIENTATION
SYNCHROTRONS
TARGETS
VAPORS