Geometric efficiency of a two-stage fully absorbing collimation system in single-pass linacs
Collimators are commonly used in particle accelerators to prevent particles traveling at large amplitudes from hitting the vacuum chamber. We derive here, for a single-pass linac, a one-dimensional analytical expression for the efficiency of a two-stage fully absorbing collimation system (CS), based...
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| Format: | Article |
| Language: | English |
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American Physical Society
2010-05-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.13.052801 |
| Summary: | Collimators are commonly used in particle accelerators to prevent particles traveling at large amplitudes from hitting the vacuum chamber. We derive here, for a single-pass linac, a one-dimensional analytical expression for the efficiency of a two-stage fully absorbing collimation system (CS), based on the CS geometrical and optical properties only. We show that, in the presence of physical space or optics constraints, the best betatron phase advance in between the first and the second collimation stage may differ from the usually prescribed π/2. The analytically computed collimation efficiency is then compared to particle tracking results. |
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| ISSN: | 1098-4402 |