Fast-switching magnet serving a spallation-driven ultracold neutron source

  title={Fast-switching magnet serving a spallation-driven ultracold neutron source},
  author={S. T. Ahmed and Emily Altiere and Taraneh Andalib and Michael J. Barnes and Bill Bell and Christopher Paul Bidinosti and Yu.V. Bylinsky and J. Chak and M. Das and Charles A. Davis and F. Fischer and Beatrice Franke and M. T. W. Gericke and Pietro Giampa and Michael Hahn and S. Hansen-Romu and Kichiji Hatanaka and T Hayamizu and Blair Jamieson and D. Jones and Kalliopi Katsika and Shinsuke Kawasaki and Tatsuya Kikawa and Wolfgang Klassen and Akira Konaka and Elie Jean Korkmaz and Florian Kuchler and L. L. Kurchaninov and Michael Lang and L. T. Lee and Thomas Lindner and Kirk W. Madison and Juliette Mammei and R. R. Mammei and J. W. Martin and Ryohei Matsumiya and Eric Miller and T. Momose and Rudiger Picker and Edgard Pierre and W. D. Ramsay and Yi-nong Rao and W. R. Rawnsley and Lori Rebenitsch and Wolfgang Schreyer and S. Sidhu and S. Vanbergen and W.T.H. van Oers and Y. X. Watanabe and Dakota Manitoba and The University of British Columbia and Center for Space Research and Triumf and McGill University and Montreal. and The University of Winnipeg and Coburg University of Applied Sciences and Arts and Research Institute for Solid State Physics and Riken and High Energy Accelerator Research Organization and Kek and Kyoto University and University of British Columbia and Simon Fraser University},
  journal={Physical Review Accelerators and Beams},
A fast-switching, high-repetition-rate magnet and power supply have been developed for and operated at TRIUMF, to deliver a proton beam to the new ultracold neutron (UCN) facility. The facility possesses unique operational requirements: a time-averaged beam current of 40~$\mu$A with the ability to switch the beam on or off for several minutes. These requirements are in conflict with the typical operation mode of the TRIUMF cyclotron which delivers nearly continuous beam to multiple users. To… Expand
3 Citations
Optimizing neutron moderators for a spallation-driven ultracold-neutron source at TRIUMF
Abstract We report on our efforts to optimize the geometry of neutron moderators and converters for the TRIUMF UltraCold Advanced Neutron (TUCAN) source using MCNP simulations. It will use anExpand
The TRIUMF UltraCold Advanced Neutron Source
Introduction A new ultracold neutron (UCN) source is being developed at TRIUMF for fundamental physics experiments. The TRIUMF UltraCold Advanced Neutron (TUCAN) Collaboration seeks to measure theExpand
Development and measurement of a fast kicker magnet applied to a proton therapy facility
Abstract A proton therapy facility based on spot scanning technique requires a fast ON/OFF beam switch during beam spots and energy modulation procedures. At HUST, a proton therapy facilityExpand


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We installed a source for ultracold neutrons at a new, dedicated spallation target at TRIUMF. The source was originally developed in Japan and uses a superfluid-helium converter cooled to 0.9$\,$K.Expand
A fast kicker magnet for the PSI 600 MeV proton beam to the PSI ultra-cold neutron source
Abstract The new type of ultra-cold neutron source presently under construction at PSI requires the possibility of transporting the full high-intensity proton beam, currently 2 mA, for about 8 sExpand
Spallation ultracold neutron source of superfluid helium below 1 K.
A cryogenic test showed that the production rate can be increased by a factor of 10 with the same storage lifetime by increasing the proton-beam power as well as (3)He pumping speed. Expand
The power supply for the beam chopper magnets of a medical synchrotron
The ongoing design of the power supply for the beam chopper magnets of a medical synchrotron is presented. The four, series connected beam chopper magnets, which are placed on the extraction line,Expand
A beamline for fundamental neutron physics at TRIUMF
  • S. Ahmed, T. Andalib, +44 authors D. Yosifov
  • Physics
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
  • 2019
Abstract This article describes the new primary proton beamline 1U at TRIUMF. The purpose of this beamline is to produce ultracold neutrons (UCN) for fundamental-physics experiments. It delivers upExpand
The MedAustron hadron therapy centre currently under construction in Wiener Neustadt, Austria, is a synchrotron based accelerator facility for cancer treatment with protons and carbon ions. TheExpand
Production of UCN by downscattering in superfluid He4
Ultra-Cold Neutrons (UCN) are neutrons with energies so low they can be stored in material bottles and magnetic traps. They have been used to provide the currently most accurate experiments on theExpand
Ceramic chambers will be used in the pulsed kicker magnets for the injection of H{sup -} into the US Spallation Neutron Source (SNS) accumulator ring. There are two reasons for using ceramic chambersExpand
Experimental study of ultracold neutron production in pressurized superfluid helium
We have investigated experimentally the pressure dependence of the production of ultracold neutrons (UCN) in superfluid helium in the range from saturated vapor pressure to 20bar. A neutron velocityExpand
Neutron induced single-event burnout of IGBT
Cosmic-ray neutrons can trigger a single-event burnout (SEB), which is a catastrophic failure mode in power semiconductor devices. It was found experimentally that the incident neutron induced SEBExpand