Study of field ionization in the charge exchange injection for the IPNS Upgrade

Author

Chae, Yong-Chul ; Cho, Yanglai

Author_Institution

Argonne Nat. Lab., IL, USA

Volume

5

fYear

1995

fDate

1-5 May 1995

Firstpage

3412

Abstract

The proposed 1-MW neutron spallation source is a rapid-cycling synchrotron (RCS) with a design intensity of 1.04×10¹⁴ protons. A H^- beam from the linac is injected into the synchrotron via the charge exchange process. Due to the high intensity of the beam, the minimization of beam loss is one of the primary concerns. In this paper, we study a possible beam loss associated with field ionization, which includes estimates of the charge fraction and level distribution of the excited hydrogen atoms after stripping, and an estimate of lifetime of the excited hydrogen atoms in the transverse magnetic field

Keywords

excited states; field ionisation; hydrogen neutral atoms; neutron sources; particle beam dynamics; proton accelerators; storage rings; synchrotrons; 1 MW; H; H atom; H atom lifetime; H^- beam; IPNS Upgrade; beam loss; charge exchange injection; field ionization; level distribution; neutron spallation source; rapid-cycling synchrotron; stripping; transverse magnetic field; Atomic beams; Hydrogen; Ionization; Life estimation; Lifetime estimation; Linear particle accelerator; Magnetic fields; Neutrons; Protons; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505899

Filename

505899