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SUMMARY:Progress on the surface muon beamline S-Line at J-PARC MUSE
DTSTART;VALUE=DATE-TIME:20220830T164000Z
DTEND;VALUE=DATE-TIME:20220830T170000Z
DTSTAMP;VALUE=DATE-TIME:20220826T120927Z
UID:indico-contribution-3831@indico.stfc.ac.uk
DESCRIPTION:Speakers: Akihiro Koda (KEK IMSS)\nThe surface muon beamline (
 S-Line) in the experimental hall No.1 of the Materials and Life science ex
 perimental Facility (MLF)\, J-PARC is designed to provide low-energy muon 
 beam\, which is mainly utilized by materials and life science experiments.
  The final goal of S-Line is a beamline with four experimental areas from 
 S1 to S4\, of which the first experimental area S1 started in 2017 for use
 r experiment programs. In 2022\, beam tests in the second experimental are
 a S2 finally started\, where a group led by Prof. Uetake at Okayama Univer
 sity has set up an apparatus for laser spectroscopy of muonium. Using the 
 electric beam kicker in the S line\, a double-pulse muon beam can be used 
 as a single-pulse muon beam in the S1 and S2 areas simultaneously. Beam co
 mmissioning started in January 2022 confirmed that 3x10^6 /s of positive m
 uons are extracted to the S2 area when the proton beam of 700 kW is operat
 ed. Besides\, we have had several beam kicker problems due to failures in 
 the Marx high voltage circuits using semiconductor devices. It is the beam
 line component that requires improvement for stable operation at the highe
 st priority.\n\nhttps://indico.stfc.ac.uk/event/53/contributions/3831/
LOCATION:Science and Technology Campus\, University of Parma
URL:https://indico.stfc.ac.uk/event/53/contributions/3831/
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