Paper | Title | Page |
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MOOP07 | Development of Ultracold Neutron Accelerator for Time Focusing of Pulsed Neutrons | 56 |
MOPRC001 | use link to see paper's listing under its alternate paper code | |
SPWR015 | use link to see paper's listing under its alternate paper code | |
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Low energy neutron accelerator can be realized by the combination of an adiabatic fast passage spin flipper and a gradient magnetic field. Neutrons have magnetic moments, so that the accumulated potential energies are not cancelled before and after passage of a magnetic field and their kinetic energies change in case their spins are flipped in the field. This accelerator handles lower kinetic energy neutrons than approximately 300 neV. Currently we have developed the advanced version which makes it possible to handle broader kinetic energy range. The design and measured characteristics are described. | ||
Slides MOOP07 [1.313 MB] | ||
Poster MOOP07 [1.389 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP07 | |
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MOOP09 | Dielectric and THz Acceleration (Data) Programme at the Cockcroft Institute | 62 |
MOPRC003 | use link to see paper's listing under its alternate paper code | |
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Funding: This work has been funded by STFC Normal conducting RF systems are currently able to pro-vide gradients of around 100 MV/m, limited by break-down on the metallic structures. The breakdown rate is known to scale with pulse length and, in conventional RF systems, this is limited by the filling time of the RF struc-ture. Progressing to higher frequencies, from RF to THz and optical, can utilise higher gradient structures due to the fast filling times. Further increases in gradient may be possible by replacing metallic structures with dielectric structures. The DATA programme at the Cockcroft Insti-tute is investigating concepts for particle acceleration with laser driven THz sources and dielectric structures, beam driven dielectric and metallic structures, and optical and infrared laser acceleration using grating and photonic structures. A cornerstone of the programme is the VELA and CLARA electron accelerator test facility at Daresbury Laboratory which will be used for proof-of-principle experiments demonstrating particle acceleration. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP09 | |
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THPRC028 | Deflector Design for Spin Rotator in Muon Linear Accelerator | 830 |
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A muon g-2/EDM experiment based on muon linear accelerator was proposed for the J-PARC muon facility. In this experiment, the ultra-slow muons created in muonium target region will be accelerated to 210 MeV kinetic energy then will be injected into the muon storage ring to measure the decay products depending on the muon spin. Therefore, a spin rotator (device) is a key component of the muon linac. Spin rotator consists of a pair of combined electrostatic and magnetic deflectors and a pair of solenoids which will be placed in between these two deflectors. In this paper, we report the design of these two dispersion-free deflectors and the simulation results of the device performance will be discussed. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC028 | |
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FR1A05 | Development of a Muon Linac for the G-2/EDM Experiment at J-PARC | 1037 |
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Precision measurements of the muon's anomalous magnetic moment (g-2) and electric dipole moment (EDM) are one of the effective ways to test the standard model. An ultra-cold muon beam is generated from a surface muon beam by a thermal muonium production and accelerated to 300 MeV/c by a linac. The muon linac consists of an RFQ, an inter-digital IH, a Disk And Washer structure, and a disk loaded structure. The ultra-cold muons will have an extremely small momentum spread of 0.3 % with a normalized transverse emittance of around 1.5 pi mm-mrad. The design and status of the muon linac at J-PARC will be presented. | ||
Slides FR1A05 [13.154 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-FR1A05 | |
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