|MOPMR015||Optical Fibers as a Tool for Gamma Beam Diagnostics at Medical Electron Accelerators||258|
Funding: This work was partially supported by the Russian Ministry of Education and Science within the program "Nauka" Grant № 3.709.2014/K.
The existing techniques for gamma beam diagnostics at medical accelerators based on X-ray films have several disadvantages such as insufficient spatial resolution, difficult realization and off-line mode. In the works*,** a feasibility of Cherenkov radiation (CR) in glass fibers for charged particle beam diagnostics was demonstrated. An application of glass fibers scanning for gamma beam diagnostics may have a lot advantages including a possibility of on-line measurements. For this goal we used optical fiber with 0.6 mm diameter and length up to 10 m. An efficiency of CR generation in such fibers and signal attenuation in a long fiber were investigated using the Tomsk microtron electron beam. The shape of gamma beam field produced by the medical SL-75-5MT 6 MeV electron accelerator was measured using the proposed technique. It is shown there it is possible to measure not only gamma beam spatial distribution, but also its angular distribution.
* Wulf, F. and Korfer, M. 2009 Proc. DIPAC2009 411.
** Murokh, A., Agustsson, R., Boucher, S., Frigola, P., Hodgetts, T., Ovodenko, A., Ruelas, M. and Tikhoplav, R. 2012 Proc. IPAC2012 996.
|DOI •||reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR015|
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