Low energy beam transport for facility for rare isotope beams driver linear particle accelerator

Journal Article · Wed Feb 15 04:00:00 EST 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3665968· OSTI ID:22072250

Sun, L T; Leitner, D; Machicoane, G; Pozdeyev, E; Winklehner, D; Zhao, Q ^[1]; Smirnov, V; Vorozhtsov, S B ^[2]

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1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
2. Joint Institute for Nuclear Research, Dubna, Moscow 141980 (Russian Federation)

The driver linac for the facility for rare isotope beams (FRIB) will provide a wide range of primary ion beams for nuclear physics research. The linac will be capable of accelerating a uranium beam to an energy of up to 200 Mev/u and delivering it to a fragmentation target with a maximum power of 400 kW. Stable ion beams will be produced by a high performance electron cyclotron resonance ion source operating at 28 GHz. The ion source will be located on a high voltage platform to reach an initial beam energy of 12 keV/u. After extraction, the ion beam will be transported vertically down to the linac tunnel in a low energy beam transport (LEBT) system and injected into a radio frequency quadrupole (RFQ) operating at a frequency of 80.5 MHz. To meet the beam power requirements, simultaneous acceleration of two-charge states will be used for heavier ions ({>=}Xe). This paper presents the layout of the FRIB LEBT and the beam dynamics in the LEBT. In particular, simulation and design of the beam line section before charge state selection will be detailed. The need to use an achromatic design for the charge state selection system and the advantage of an ion beam collimation system to limit the emittance of the beam injected into the RFQ will be discussed in this paper.

• OSTI ID: 22072250
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM DYNAMICS
BEAM EXTRACTION
BEAM TRANSPORT
CHARGE STATES
ECR ION SOURCES
ELECTRIC POTENTIAL
ELECTRON CYCLOTRON-RESONANCE
GHZ RANGE
ION BEAMS
KEV RANGE
LINEAR ACCELERATORS
MEV RANGE
MHZ RANGE
RADIOWAVE RADIATION
RARE EARTH NUCLEI
TARGETS
URANIUM