| Paper |
Title |
Page |
| TUPAN039 |
Profile Measurement and Transverse Matching in J-PARC Linac
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1472 |
| |
- H. Akikawa
- Z. Igarashi, M. Ikegami, S. Lee
KEK, Ibaraki
- S. Sato, T. Tomisawa, A. Ueno
JAEA/LINAC, Ibaraki-ken
- G. B. Shen
JAEA, Ibaraki-ken
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Beam commissioning of J-PARC linac has been performed since November 2006. In the beam commissioning, transverse matching has been performed by measurement of beam profiles and emittance with wire scanners. In this presentation, detail of wire scanners and the method of matching are described.
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| FRPMN045 |
Beam Position Monitor and its Calibration in J-PARC LINAC
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4072 |
| |
- S. Sato
- H. Akikawa, Z. Igarashi, N. Kamikubota, S. Lee
KEK, Ibaraki
- M. Ikegami
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- H. Sako, G. B. Shen
JAEA, Ibaraki-ken
- T. Tomisawa, A. Ueno
JAEA/LINAC, Ibaraki-ken
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The beam commissioning of J-PARC linac has been started in November 2006. Beam Position Monitors (BPMs) which have been calibrated on the bench setup with a scanning wire, utilize beam based calibration to relate the BPM center and the center of Q magnet. In this presentation, detail of installed BPM and the calibration methods are described.
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| FRPMN047 |
Development of a Beam Induced Heat-Flow Monitor for the Beam Dump of the J-PARC RCS
|
4084 |
| |
- K. Satou
- N. Hayashi, H. Hotchi, Y. Irie, M. Kinsho, M. Kuramochi, P. K. Saha, Y. Yamazaki
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- S. Lee
KEK, Ibaraki
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A beam induced heat-flow monitor (BIHM) will be installed in front of the beam dump of the RCS (Rapid Cycling Synchrotron) at J-PARC (Japan Particle Accelerator Research Complex), where a power limitation of the beam dump is 4 kW. The purposes of this monitor are to observe a beam current injected into the beam dump and to generate an alarm signal for the main control system of the RCS. At the BIHM the beams penetrate a carbon plate of 1.5 mm in thickness, where the plate is supported by four rods on the monitor chamber. The heat generated by the interactions between the beam and the carbon plate propagates to the outer edge of the plate, and then to the monitor chamber through the four rods. By measuring the temperature differences between upstream and downstream ends of each rod, the total heat flow can be measured. The beam current can be determined by the measured heat flow with the help of the calculated stopping power of a proton in a carbon material. The design of the BIHM and test results of a prototype will be described.
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