Feasibility study of a 1-MW pulsed spallation source

Author

Cho, Y. ; Chae, Y.-C. ; Crosbie, E. ; Fathizadeh, M. ; Friedsam, H. ; Harkay, K. ; Horan, D. ; Kim, S. ; Kustom, R. ; Lessner, E. ; McDowell, W. ; McGhee, D. ; Mills, F. ; Moe, H. ; Nielsen, R. ; Norek, G. ; Peterson, K.J. ; Rauchas, A. ; Symon, K. ; Thom

Author_Institution

Argonne Nat. Lab., IL, USA

Volume

1

fYear

1995

fDate

1-5 May 1995

Firstpage

363

Abstract

A feasibility study of a 1-MW pulsed spallation source based on a rapidly cycling proton synchrotron (RCS) has been completed. The facility consists of a 400-MeV H^- linac, a 30-Hz RCS that accelerates the 400-MeV beam to 2 GeV, and two neutron-generating target stations. The design time-averaged current of the accelerator system is 0.5 mA, and is equivalent to 1.04×10¹⁴ protons per pulse. The linac system consists of an H^- ion source, a 2-MeV RFQ, a 70-MeV DTL and a 330-MeV CCL. Transverse phase space painting to achieve a Kapchinskij-Vladimirskij (K-V) distribution of the injected particles is accomplished by the charge exchange injection and programming of the closed orbit during the injection. The synchrotron lattice uses FODO cells of 90° phase advance. Dispersion-free straight sections are obtained by using a missing magnet scheme. Synchrotron magnets are powered by a dual-frequency resonance circuit that excites the magnets at a 20-Hz rate and de-excites them at a 60-Hz rate, resulting an effective rate of 30 Hz, and reducing the required rf power by 1/3. Details of the study are presented

Keywords

ion accelerators; ion sources; proton accelerators; synchrotrons; 1 MW; 2 GeV; 30 Hz; 330 MeV; 400 MeV; 70 MeV; FODO cell; H; H^- ion source; H^- linac; Kapchinskij-Vladimirskij distribution; dual-frequency resonance circuit; pulsed spallation source; rapidly cycling proton synchrotron; transverse phase space painting; Acceleration; Ion accelerators; Ion sources; Linear particle accelerator; Magnetic resonance; Painting; Particle beams; Proton accelerators; Space charge; 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.1995.504661

Filename

504661