Extraction and low energy beam transport models used for the IFMIF/EVEDA RFQ commissioning

Bellan, Luca; Akagi, Tomoya; Bolzon, B.; Cara, Philippe; Carin, Yann; Cavenago, M.; Chauvin, Nicolas; Comunian, M.; Dzitko, Hervé; Fagotti, E.; Grespan, F.; Kondo, Keitaro; Moya, I.; Pisent, A.; Podadera, I.; Scantamburlo, Francesco; Sugimoto, M.

doi:10.1088/1742-6596/2244/1/012078

Cited by 1 publication

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References 6 publications

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“…The schematic layout of the LEBT and RFQ section is illustrated in figure 5. The simulation and experimental report of LEBT transmission had been published by L. Bellan et al, including the result of injector commissioning [14]. According to the report, space charge compensation in the LEBT section is very high except for the chopper.…”

Section: Beam Simulation Study 31 Rfq Simulation By Toutatis In Tracewinmentioning

confidence: 99%

Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning

Hirosawa,

Bellan,

Benedetti

et al. 2024

J. Inst.

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The Linear IFMIF Prototype Accelerator, LIPAc, is being commissioned aiming at validating the RFQ up to 5 MeV beam acceleration. Eventually, the nominal beam of 5 MeV–125 mA in 1 ms length and 1 Hz rate pulsed mode was achieved in 2019. The beam operation has been resumed since July 2023 after a long maintenance including recovery from unexpected problems in the RFQ-RF system. This new phase aims at the commissioning of the full configuration except SRF LINAC, which is replaced by a temporary beam transport line. Focusing on the RFQ behavior, it will be interesting to operate it at higher duty, especially for longer pulses. Furthermore, a beam simulation study suggested that the beam extracted from the RFQ includes considerable momentum halo when the vane voltage reduces by more than 5 %, with a slight decrease of the mean energy. It can be a potential source of a quench like the mismatched beam in the cryomodule. This could be studied by measuring the energy from the Time-of-Flight among multiple BPMs while monitoring beam loss around the dipole, where momentum halo should be lost. During the beam commissioning phase, we studied them by scanning the RFQ voltage.

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Section: Beam Simulation Study 31 Rfq Simulation By Toutatis In Tracewinmentioning

confidence: 99%

Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning

Hirosawa,

Bellan,

Benedetti

et al. 2024

J. Inst.

Self Cite

View full text Add to dashboard Cite

show abstract

Extraction and low energy beam transport models used for the IFMIF/EVEDA RFQ commissioning

Cited by 1 publication

References 6 publications

Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning

Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning

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