期刊
NUCLEAR SCIENCE AND TECHNIQUES
卷 30, 期 12, 页码 -出版社
SPRINGER SINGAPORE PTE LTD
DOI: 10.1007/s41365-019-0699-7
关键词
Heavy ion medical machine; Transverse emittance; Slit-grid
资金
- National Natural Science Foundation of China [11775281]
The transverse emittance of the extracted beam from the heavy ion medical machine cyclotron is measured and then optimized for injection into the synchrotron. For the purposes of cross-validation, three methods, i.e., slit-grid, Q-scan, and 3-grid, are used to measure the emittance. In the slit-grid technique, an automatic selection of the region of interest is adopted to isolate the major noise from the beam phase space, which is an improvement over the traditional technique. After iterating over the contour level, an unbiased measurement of the emittance can be obtained. An improvement in the thin lens technique is implemented in the Q-scan method. The results of these measurements are presented.
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