FFAG-Workshop Dec. 2005 Kumatori Japan Diagnostics for FFAG- accelerator Takahisa ITAHASHI...
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Transcript of FFAG-Workshop Dec. 2005 Kumatori Japan Diagnostics for FFAG- accelerator Takahisa ITAHASHI...
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Diagnostics for FFAG-Diagnostics for FFAG-acceleratoraccelerator
Takahisa ITAHASHITakahisa ITAHASHIDepartment of Physics, Osaka UniDepartment of Physics, Osaka Univ. Toyonaka, Osaka, 560-0043,Jav. Toyonaka, Osaka, 560-0043,Ja
panpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Contents
Performances of beam quality for various Performances of beam quality for various AcceleratorsAccelerators
Diagnostic instruments for a qualified beam Diagnostic instruments for a qualified beam
Diagnostic instruments proposed for PRISM-Diagnostic instruments proposed for PRISM-FFAGFFAG
Conclusion Conclusion
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Performances of Performances of up-dated acceleratorsup-dated accelerators (th(the state of the art)e state of the art) such as static acc., cyclotr such as static acc., cyclotr
on, linac and synchrotronon, linac and synchrotron
1010-4-4 energy resolution (Osaka RCNP ring) energy resolution (Osaka RCNP ring) High beam power around 1 M-watt (PSI)High beam power around 1 M-watt (PSI)Precise positioning less than 1-micron (static acc.)Precise positioning less than 1-micron (static acc.)High Luminosity achieved for B-Physics (KEK, SLAC)High Luminosity achieved for B-Physics (KEK, SLAC)Synchrotron orbit radiation ( SPRING-8)Synchrotron orbit radiation ( SPRING-8)
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Tail or skirt part of beam profile or Tail or skirt part of beam profile or beam distributionbeam distribution
The measurement is crucial for high current acThe measurement is crucial for high current accelerators such as PSI cyclotroncelerators such as PSI cyclotron
Achieved extraction efficiency is about 99.9Achieved extraction efficiency is about 99.99% at 1mA operation 9% at 1mA operation
In design of ADS a few hundreds MeV ~ 1 GeIn design of ADS a few hundreds MeV ~ 1 GeV, 100 microA~1mA V, 100 microA~1mA
Precise knowledge of beam distribution is needePrecise knowledge of beam distribution is neededd
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
6-Dimensional beam behavior 6-Dimensional beam behavior should be should be
discussed in FFAG designdiscussed in FFAG design
Recent study of high current beam dynamics Recent study of high current beam dynamics concerns with non-linear physics issues, which concerns with non-linear physics issues, which includes includes
Space-charge dominated beamsSpace-charge dominated beams
Several resonance effects in FFAG acceleratorsSeveral resonance effects in FFAG accelerators
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Beam loss due to deterioration beam Beam loss due to deterioration beam qualityquality
Beam envelope in 6-D phase space, in particulBeam envelope in 6-D phase space, in particularar
Transverse-planesTransverse-planes
Characteristic X-rays which are measuredCharacteristic X-rays which are measured
in a wide dynanic range of intensity lower to in a wide dynanic range of intensity lower to
1010-6-6 of the peak are very helpful for getting the id of the peak are very helpful for getting the ideaseas
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Beam loss due to deterioration Beam loss due to deterioration beam qualitybeam quality
Longitudinal-plane???microscopic time buLongitudinal-plane???microscopic time bunch of FFAG beam nch of FFAG beam
Rf-gammaRf-gamma
Particle-particleParticle-particle
For measurement of longitudinal distributioFor measurement of longitudinal distributionn
Comparison for measurement with FFTComparison for measurement with FFT
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Diagnostic devicesDiagnostic devicesBeam transformer x(non destructive) Beam transformer x(non destructive) Wall current monitor x(non destructive) Wall current monitor x(non destructive) Pick-ups x(non destructive) Pick-ups x(non destructive) Faraday cup D(destructive)Faraday cup D(destructive)Secondary emission monitor Secondary emission monitor - +- +Wire scanner -Wire scanner -Wire chamber - +Wire chamber - +Ionization chamber - +Ionization chamber - +Beam loss monitor x(non destructive) Beam loss monitor x(non destructive) Gas curtain/jet - Gas curtain/jet - Residual gas monitors x(non destructive) Residual gas monitors x(non destructive) Scintillator screens - + DScintillator screens - + DScrapers, target DScrapers, target DSchottoky scan x(non destructive) Schottoky scan x(non destructive) Synchrotron radiation x(non destructive) Synchrotron radiation x(non destructive) Laser-Compton scattering x(non destructive) Laser-Compton scattering x(non destructive) Q-measurement x(non destructive) -Q-measurement x(non destructive) -Emittance measurement - + DEmittance measurement - + DMeasurement of energy x(non destructive) - + DMeasurement of energy x(non destructive) - + D
Polarimeter x(non destructive) Polarimeter x(non destructive) Based on H. Koziol ( CAS at Univ. of Jyvaskyla)Based on H. Koziol ( CAS at Univ. of Jyvaskyla)
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Requirements forRequirements for diagnostics in diagnostics in PRISM-FFAGPRISM-FFAG
Comparison with anti-proton productionComparison with anti-proton productionSimilar facilities as PRISM was ? at CERN and will be AD-project at J-PASimilar facilities as PRISM was ? at CERN and will be AD-project at J-PA
RC(ref. E.Widman).RC(ref. E.Widman).AD : 200 pi mm mrad and dp/p = 6 %AD : 200 pi mm mrad and dp/p = 6 % : stable: stable : proton beam of capture momentum is : proton beam of capture momentum is very helpful for tuningvery helpful for tuning
: various cooling techniques are helpful for storage: various cooling techniques are helpful for storage Comparison with radio-active ion beam at RIBFComparison with radio-active ion beam at RIBF
MUSES : +/- 10 mrad and dp/p = 2.5 %MUSES : +/- 10 mrad and dp/p = 2.5 % : lifetimes of order of 1 microsec.: lifetimes of order of 1 microsec. : cooling and high luminosity are considered for collision: cooling and high luminosity are considered for collision
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Measurement of beam profile at POP-FFAG Measurement of beam profile at POP-FFAG with BPM( non-destructive)with BPM( non-destructive)
Measurement of beam profileMeasurement of beam profile
Measurement of beam oscillationMeasurement of beam oscillation
Measurement of synchrotron freq.Measurement of synchrotron freq.
Measurement of betatron tuneMeasurement of betatron tune
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Injected muon beamInjected muon beam
Dispersion matched at injectionDispersion matched at injectionCentral momentum : 68 MeV/cCentral momentum : 68 MeV/cRRequiequi = 6.5 m = 6.5 m
Momentum spread : +/- 20 %Momentum spread : +/- 20 %Beam intensity 10Beam intensity 101111 ~ 10 ~ 101212 / sec / sec Aperture : 30 cm (v) x 100 cm (h)Aperture : 30 cm (v) x 100 cm (h)
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Scrapers and measurement targetsScrapers and measurement targetsDifferential type beam probe headDifferential type beam probe head
(for transversal) (for transversal)
Differential current measurement in horizontal anDifferential current measurement in horizontal and vertical planesd vertical planesProbe head has a slightly separated(~5mm) tips Probe head has a slightly separated(~5mm) tips Horizontal stroke is +/- 50 cmHorizontal stroke is +/- 50 cmVertiacal stroke is +/- 15 cm or rotated Vertiacal stroke is +/- 15 cm or rotated Measurable current is about 10pA~100nA with lMeasurable current is about 10pA~100nA with log amplifierog amplifier
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Position sensitive solid state counter Position sensitive solid state counter (energy and TOF)(energy and TOF)
50 mm x 50 mm silicon strip solid state co50 mm x 50 mm silicon strip solid state counter for energy measurement unter for energy measurement rf-particle TOF measurementrf-particle TOF measurementTwo dimensional measurement between Two dimensional measurement between
position and energy will be avairableposition and energy will be avairable
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Sci-FiberSci-Fiber
Sci-Fiber could be applied for beam diagnoSci-Fiber could be applied for beam diagnostics in PRISM-FFAGstics in PRISM-FFAGDr. M. Yoshida-san would have a short coDr. M. Yoshida-san would have a short comment for this issuemment for this issueMr. Takayanagi-san would like to develop tMr. Takayanagi-san would like to develop the device next yearhe device next year..
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
Parameters for PRISM-FFAG AcceleratorParameters for PRISM-FFAG AcceleratorN = 10N = 10K = 4.6K = 4.6F/D = 6.2F/D = 6.2rr00 = 6.5 m for 68 MeV/c = 6.5 m for 68 MeV/cHalf gap = 17 cmHalf gap = 17 cmmag. Size 110 cm at F centermag. Size 110 cm at F centerTune h : 2.73 and v : 1.58Tune h : 2.73 and v : 1.58
FFAG-Workshop Dec. 2005 Kumatori JaFFAG-Workshop Dec. 2005 Kumatori Japanpan
ConclusionConclusion
Feasible and actual design of beam diagnostic Feasible and actual design of beam diagnostic devices in PRISM-FFAG is neededdevices in PRISM-FFAG is needed
Space problem for devices should be solvedSpace problem for devices should be solved
Data taking and display would be needed for Data taking and display would be needed for easy operation of PRISM-FFAGeasy operation of PRISM-FFAG
Precise measurement in 6-D beam optics Precise measurement in 6-D beam optics would be helpful for study of non-linear beam would be helpful for study of non-linear beam dynamicsdynamics