Development of high resolution linear-cut beam position monitor for heavy-ion synchrotron of KHIMA project
| Autor: | Ji-Gwang Hwang, Minkyoo Choi, Garam Hahn, Peter Forck, Seon Yeong Noh, Tae-Keun Yang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Nuclear and High Energy Physics Beam diameter business.industry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Synchrotron Displacement (vector) law.invention Linear cut beam position monitor heavy ion synchrotron medical accelerator Acceleration Optics law 0103 physical sciences Cathode ray Physics::Accelerator Physics M squared Laser beam quality 0210 nano-technology business Instrumentation Beam (structure) |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 852:33-39 |
| ISSN: | 0168-9002 |
| Popis: | A beam position monitor with high precision and resolution is required to control the beam trajectory for matching to the injection orbit and acceleration in a heavy ion synchrotron. It will be also used for measuring the beta function, tune, and chromaticity. Since the bunch length at heavy ion synchrotron is relatively long, a few meters, a boxlike device with plates of typically 20 cm length is used to enhance the signal strength and to get a precise linear dependence with respect to the beam displacement. Especially, the linear cut beam position monitor is adopted to satisfy the position resolution of 100 amp; 956;m and accuracy of 200 amp; 956;m for a nominal beam intensity in the KHIMA synchrotron of amp; 8764;7 108 particles for the carbon beams and amp; 8764;2 1010 for the proton beams. In this paper, we show the electromagnetic design of the electrode and surroundings to satisfy the resolution of 100 amp; 956;m, the criteria for mechanical aspect to satisfy the position accuracy of 200 amp; 956;m, the measurement results by using wire test bench, design and measurement of a high input impedance pre amplifier, and the beam test results with long amp; 8764;1.6 amp; 956;s electron beam in Pohang accelerator laboratory PAL |
| Databáze: | OpenAIRE |
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