MUSAC
Report from the 1st meeting
Held at KEK Feb 7Th 2003

03.3.18

J.-M. Poutissou (MUSAC chair)

1MUSAC membership•••

J. Akimitsu
S. Ikeda
Y. Ikeda(Aoyama Gakuin U)(KEK)(JAERI)

KEK-IMSS Exec.Comm. Member
KEK-IMSS Exec.Comm. Member
J-PARC MFLG Leader•

M.Iwasaki(RIKEN)

Muon Science Exp. Specialist•

Y. Miyake(KEK)

J-PARC MLFG-Muon Sub-leader•

K. Nagamine(KEK)

KEK-IMSS-MSL Head, KEK-IMSS Exec. Comm. Member

N.Nishida(Tokyo Ins. Tech.)

KEK-IMSS Exec. Comm. Member•

Y. Yamazaki(JAERI)

J-PARC Acc. Div. Leader•

H. Yasuoka(JAERI)

Condensed Matter Experiment Specialist•

R. H. Heffner(Los Alamos Lab.)ISMS President, Muon Science Exp. Specialist••••

C. Petitjean(Paul Scherrer Inst.)
J-PARC IAC Member
L. I. Ponomarev(Kurchatov Inst.)
Muon Science Theory Specialist
J. M. Poutissou(TRIUMF Lab.)
J-PARC IAC Member
Observers: J.Sonier and R.Cywinski Vice-presidents of ISMS

03.3.18

J.-M. Poutissou (MUSAC chair)2From the March 2002 report ofIAC• Muon Science Facility:• ….We recommend that proposals,selection anddesign of such dedicated facilities and/orexperiments should now be started by theJapanese experimental (and International)
community so that the design of the proton target
station does not preclude the optimization of muon
facilities…..
03.3.18

J.-M. Poutissou (MUSAC chair)

3

Muon Facilities• Pulsed sources¾ISIS

800MeV,200µa¾KEK

500MeV, 5µa¾J-PARC

3 GeV, 333µa• DC sources

03.3.18

PSI

590 MeV, 2 ma

TRIUMF

500MeV,150µa

J.-M. Poutissou (MUSAC chair)4J-PARC Muon Facilities• 4 muon channels off one production target intandem with the neutron source:¾ Conventional Decay/surface channel¾ Surface muon channels¾ High momentum channel¾ High acceptance channel: Dai-Omega type(for Sub-keV muons, Microbeams…..)

 Target thickness limited by neutron flux losses
03.3.18

J.-M. Poutissou (MUSAC chair)

5Technical Issues• Isotropic Carbon , edge cooled ,3.3KW• Remote handling• Air activation• Water activation• Shielding requirements• Reliability
03.3.18

J.-M. Poutissou (MUSAC chair)

6Technical Issues• Coordination at Engineering level withNeutron source Engineering• Coordination with proton beam designers
on beam parameters requirements ( size,time width, position stability..) and beam
monitoring• Installation of front end of all four channels
best done before first activation.
03.3.18

J.-M. Poutissou (MUSAC chair)

7

Science reach• Muon Spin rotation/relaxation/resonance( MuSR type experiments)• Muon catalyzed fusion• Fundamental muon physics
03.3.18

J.-M. Poutissou (MUSAC chair)

8Muon Science: MuSR
• Unique high intensity pulsed source• Unique Low energy muon capability (Super Dai-Omega channel)• New instrumentation and Techniques• Strong active young community• Good linkages with material science• Synergy with neutron users ( a la ISIS/PSI..)03.3.18

J.-M. Poutissou (MUSAC chair)

9Muon Catalyzed Fusion(MuCF)• Explore the Temperature/Pressure phasespace for MuCf in H/D/T mixtureso Basic few body reactions
o Applications• High energy muons• Strong community• Theoretical support
03.3.18

J.-M. Poutissou (MUSAC chair)

10Fundamental Muon science• Muon life time: CPT test
• Muon molecules• Muonium spectroscopy• Muonic atom spectroscopy• “Tailored made” muon beams and facilities• (Rare decay program at to the 50 GeV synchrotronmainly)
03.3.18

J.-M. Poutissou (MUSAC chair)

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Observations andRecommendations
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•
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Rich Physics potential with an active and enthusiastic community
Coordination of technical effort with Neutron source. Standardization
R/D on production target and validation of the conceptual design.
Strong support for a Super Omega type channel: Need to evaluate theDai-Omega performance
Need for more formal letters of Intent to influence the design of thefacility.
Start R/D on advanced Instrumentation in the Universities.
Need to solve the funding shortage for shielding to allow for an earlystart
Initial minimal program could give the first physics publications at JPARC.

03.3.18

J.-M. Poutissou (MUSAC chair)12