Beam Loss Studies for Rare Isotope Driver Linacs Final Report

Wangler, T P ; Kurennoy, S S ; Billen, J H ; Crandall, K R ; Qiang, J ; Ryne, R D ; Mustapha, B ; Ostroumov, P ; Zhao, Q ; York, and R. C.

关键词: Fortran 90 RIAPMTQ/IMPACT code;    linked beam-dynamics simulation code;    end-to-end computer simulations of multiple-charge-state heavy-ion linacs;    code RIAPMTQ;    code IMPACT;    high-statistics runs on parallel supercomputing platforms;   

DOI  :  10.2172/1039573
RP-ID  :  DOE-MICHIGAN STATE-41479
PID  :  OSTI ID: 1039573

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来源: SciTech Connect

【 摘 要 】

The Fortran 90 RIAPMTQ/IMPACT code package is a pair of linked beam-dynamics simulation codes that have been developed for end-to-end computer simulations of multiple-charge-state heavy-ion linacs for future exotic-beam facilities. These codes have multiple charge-state capability, and include space-charge forces. The simulations can extend from the low-energy beam-transport line after an ECR ion source to the end of the linac. The work has been performed by a collaboration including LANL, LBNL, ANL, and MSU. The code RIAPMTQ simulates the linac front-end beam dynamics including the LEBT, RFQ, and MEBT. The code IMPACT simulates the beam dynamics of the main superconducting linac. The codes have been benchmarked for rms beam properties against previously existing codes at ANL and MSU. The codes allow high-statistics runs on parallel supercomputing platforms, particularly at NERSC at LBNL, for studies of beam losses. The codes also run on desktop PC computers for low-statistics work. The code package is described in more detail in a recent publication [1] in the Proceedings of PAC07 (2007 US Particle Accelerator Conference). In this report we describe the main activities for the FY07 beam-loss studies project using this code package.