Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505899
