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Title |
Other Keywords |
Page |
| TUOA01 |
Beam Instrumentation in J-PARC |
linac, feedback, impedance, proton |
275 |
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- T. Toyama
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
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The talk will summarize the beam instrumentation at J-PARC with a focus on MW class proton beams. The measurements of beam intensities, positions, losses, profiles, and halos at each stage of accelerator, 181 MeV LINAC (to be upgraded to 400MeV), 3 GeV RCS and 50 (30 as phase I) GeV MR will be reported. Present status, including modification and improvement of instrumentations to meet with LINAC energy upgrade and a future plan will be reported with emphasis on high beam power related issues such as radiation hardness (mechanically and electrically), beam coupling impedance, etc..
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Slides TUOA01 [22.777 MB]
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| TUPD67 |
Injection Efficiency Diagnostic at TLS Storage Ring |
injection, storage-ring, booster, diagnostics |
461 |
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- P.C. Chiu, J. Chen, Y.K. Chen, K.T. Hsu, K.H. Hu, C.H. Kuo
NSRRC, Hsinchu, Taiwan
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TLS is now running at 360 mA top-up mode. In the normal situation, it takes few minutes for injection from zero current to 360 mA. When the working point is drifted too much at machine start, however, injection efficiency become worsen and it is necessary to adjust some machine parameters such as quadrupole strength, transport line correctors or booster dipole to improve efficiency. The current reading at 10 Hz time resolution which is the same with injection cycle seems too rough to estimate efficiency therefore a new diagnostic tool based on BPM sum reading is developed to provide 10 kHz waveform display every second. Operators could utilize it to estimate efficiency more precise, quickly and easier.
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Poster TUPD67 [0.842 MB]
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