Laser photoionization of H/sup 0/ beams for charge-changing injection

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6302483

Blind, B; Jason, A J

The two-step charge-changing injection used in the Los Alamos Proton Storage Ring (PSR) requires stripping of H/sup -/ to H/sup 0/ by high magnetic fields and subsequent stripping of H/sup 0/ to H/sup +/ by a carbon foil. We consider single- and multiphoton laser ionization as alternatives to using a fragile foil. The multiphoton case is of possible interest for selection of practical lasers, which tend to have increased power output at higher wavelengths. The formulas derived express the necessary laser powers for ionization of monoenergetic H/sup 0/ beams; they also hold for beams of particles other than atomic hydrogen. The numerical examples given are for the 800-MeV PSR beam with momentum spread taken into account. Additionally, we discuss selective stripping as an implication of the inherent energy selectivity of the photoionization process.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6302483
• Report Number(s): LA-UR-83-754; CONF-830311-54; ON: DE83009972
• Resource Relation: Conference: Particle accelerator conference, Santa Fe, NM, USA, 21 Mar 1983; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
HYDROGEN 1 MINUS BEAMS
BEAM STRIPPERS
STORAGE RINGS
BEAM INJECTION
HYDROGEN
HYDROGEN IONS 1 MINUS
LASER RADIATION
PHOTON-ATOM COLLISIONS
PHOTON-ION COLLISIONS
ANIONS
ATOM COLLISIONS
BEAMS
CHARGED PARTICLES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HYDROGEN IONS
ION BEAMS
ION COLLISIONS
IONS
NONMETALS
PHOTON COLLISIONS
RADIATIONS
430302* - Particle Accelerators- Injection & Extraction Systems