Visible-light beam size monitors using synchrotron radiation at CESR
| Autor: | Wang, S. T., Rubin, D. L., Conway, J., Palmer, M., Hartill, D., Campbell, R., Holtzapple, R. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Nuclear Instruments and Methods in Physics Research A 703 (2013) 80 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nima.2012.11.097 |
| Popis: | A beam profile monitor utilizing visible synchrotron radiation (SR) from a bending magnet has been designed and installed in Cornell Electron-Positron Storage Ring (CESR). The monitor employs a double-slit interferometer to measure both the horizontal and vertical beam sizes over a wide range of beam currents. By varying the separation of the slits, beam sizes ranging from 50 to 500 um can be measured with a resolution of approximately 5 um. To measure larger beam size (> 500 um), direct imaging can be employed by rotating the double slits away from SR beam path. By imaging the pi-polarized component of SR, a small vertical beam size (~70 um) was measured during an undulator test run in CESR, which was consistent with the interferometer measurement. To measure the bunch length, a beam splitter is inserted to direct a fraction of light into a streak camera setup. This beam size monitor measures the transverse and longitudinal beam sizes simultaneously, which is successfully used for intrabeam scattering studies. Detailed error analysis is discussed. Comment: 26 pages, 13 figures |
| Databáze: | arXiv |
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