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

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
OSTI Identifier:
6302483
Report Number(s):
LA-UR-83-754; CONF-830311-54
ON: DE83009972
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
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
Subject:
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

Citation Formats

Blind, B, and Jason, A J. Laser photoionization of H/sup 0/ beams for charge-changing injection. United States: N. p., 1983. Web.
Blind, B, & Jason, A J. Laser photoionization of H/sup 0/ beams for charge-changing injection. United States.
Blind, B, and Jason, A J. 1983. "Laser photoionization of H/sup 0/ beams for charge-changing injection". United States. https://www.osti.gov/servlets/purl/6302483.
@article{osti_6302483,
title = {Laser photoionization of H/sup 0/ beams for charge-changing injection},
author = {Blind, B and Jason, A J},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6302483}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}

Conference:
Other availability
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