Upgrade of the medium energy dump geometry for the SPIRAL2 single bunch selector

Giacomo, M Di; Barthe-Dejean, C; Jacquot, B; Leloir, S; Orduz, A K

doi:10.1088/1742-6596/2687/8/082041

Cited by 1 publication

(1 citation statement)

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“…In the following run, it was found that the beam dump receiving the unused bunches deviated by the SBS (≤ 7.5 kW) was affected by Coulomb scattering producing an important heating degrading the beam current measurements. To reduce these effects, the beam dump was redesigned (surface changed from flat to staircase), constructed and installed, which successfully decreased the temperature and the current offset [25].…”

Section: Jinst 19 T05006mentioning

confidence: 99%

SPIRAL2 commissioning and operations

Orduz,

Di Giacomo,

Lagniel

et al. 2024

J. Inst.

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The SPIRAL2 linac is now successfully commissioned; H+, 4He2+, D+ and 18O6+ have been accelerated up to nominal parameters and 18O7+ and 40Ar14+ beams have been also accelerated up to 7 MeV/A. The main steps with 5 mA H+, D+ beams and with 0.6 mA 18O6+ are described. The general results of the commissioning of the RF, cryogenic and diagnostics systems, as well as the preliminary results of the first experiments on NFS are presented. In addition of an improvement of the matching to the linac, the tuning procedures of the 3 Medium Energy Beam Transport (MEBT) rebunchers and 26 linac SC cavities were progressively improved to reach the nominal parameters in operation, starting from the classical “signature matching method”. The different cavity tuning methods developed to take into account our particular situation (very low energy and large phase extension) are described. The tools developed for an efficient linac tuning in operation, e.g. beam energy and intensity changes are also discussed.

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Section: Jinst 19 T05006mentioning

confidence: 99%