Author: Rowe, M.
Paper Title Page
TU1A03 Status and Issues (Microphonics, LFD, MPS) with TRIUMF ARIEL e-Linac Commissioning 286
  • S.R. Koscielniak, M. Alcorta, F. Ames, E. Chapman, K. Fong, B. Humphries, O.K. Kester, D. Kishi, R.E. Laxdal, Y. Ma, T. Planche, M. Rowe, S.D. Rädel, V.A. Verzilov, Z.Y. Yao
    TRIUMF, Vancouver, Canada
  The ARIEL electron linac (e-linac) is designed to generate cw beams of up to 30 MeV and 10 mA for delivery to a photo-convertor. Bremsstrahlung induced fission of a production target yields neutron-rich rare isotope beams to be supplied to the ISAC experimental facilities. The beam power will eventually reach 300 kW, and a machine protection system (MPS) with 10 μs rapidity is essential. The e-linac, which adopts 1.3 GHz, 2K SRF technology, is composed of a 10 MeV single-cavity injector cryomodule (EINJ) and a 20 MeV two-cavity accelerator cryomodule (EACA). The latter has vector-sum control of two cavities driven from a single klystron. Beam commissioning of these systems is ongoing since 2016. The magnetic optics and MPS commissioning to 10 MeV is reported herein. Beam has been accelerated up to 25 MeV, and thread-ed to the high energy dump (EHD). A campaign to investigate microphonics driving terms, LN2 disturb-ances, and a ponderomotive instability in the EACA, is underway.  
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About • paper received ※ 17 September 2018      issue date ※ 18 January 2019  
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