FRA02

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URL	https://doi.org/10.18429/JACoW-HIAT2025-FRA02
Title	Rare-isotope production optics of ARIS preseparator
Authors	M. Portillo, M. Smith, M. Steiner, O. Tarasov, B. Sherrill Michigan State University D. Kahl, E. Daykin, I. Nesterenko, J. Song, K. Fukushima, M. Hausmann, P. Ostroumov, S. Miller, S. Cogan, S. Lidia, T. Zhang, X. Du, X. Rao, Y. Choi, T. Xu, A. Dombos, E. Kwan Facility for Rare Isotope Beams
Abstract	The Advance Rare Isotope Separator (ARIS) at FRIB provides in-flight purification of rare-isotope beams (RIB) generated by projectile fragmentation or fission on a target. Beams of stable ions from a driver linac impinge on a graphite target thin enough such that products main-tain velocities close to that of the incident beam. The incident primary beam impinges on-target at about 200 MeV/u (for uranium and higher for lighter species). The energy may be lower than the maximum allowed, de-pending on the requirements of the experiment. Using multi-charge state acceleration, the linac has most recently provided up to 20 kW on-target with a long-term goal of reaching 400 kW. Specialized magnets, collimators and other components have been integrated into the separator to withstand harsh conditions and facil-itate maintenance. The optics properties at the beam dump are important since the power density must be kept low enough to avoid failure of the material. We describe the various optics modes that have been developed for safe operations and maximizing the beam power allowed for RIB production.
Paper	download: FRA02.pdf
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Conference	16th International Conference on Heavy Ion Accelerator Technology
Series
Location	East Lansing, MI, USA
Date	22-27 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Ling Wang (FRIB/MSU), Kelly Jaje (ANL), Michelle Wier (FRIB/MSU), Kent Wootton (ANL), Tong Zhang (FRIB/MSU)
Online ISBN	978-3-95450-260-8
Online ISSN	2673-5547
Received	21 June 2025
Revised	22 June 2025
Accepted	23 June 2025
Issued	13 October 2025
DOI	10.18429/JACoW-HIAT2025-FRA02
Pages	308-310
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.