Abstract
The results of experimental investigations of Cherenkov radiation in optical fibers with 0.6 mm thickness which were used to scan an electron beam of 5.7 MeV energy are presented. Using such a technique for beam profile measurements it is possible to create a compact and reliable device compared to existing systems based on ionization chambers.
Highlights
A wide application of electron accelerators with energy ~ 10 MeV in different fields determines a necessity for beam parameter diagnostics in on-line mode
Such a diagnostics device has several disadvantages such as weak sensitivity and inability of gamma beam diagnostics. There is another technique for beam diagnostics, which is used in intraoperative therapy, based on the ionization chamber
The orientation curve was measured by inclination of the fiber relatively to the electron beam axis in horizontal plane
Summary
A wide application of electron accelerators with energy ~ 10 MeV in different fields (essential for medical treatment) determines a necessity for beam parameter diagnostics in on-line mode. One of these important parameters is the transverse beam profile. The most widespread technique of transverse beam profile measurement is based on detection of bremsstrahlung generated by the electrons passing through a thin metal wire [1, 2] Such a diagnostics device has several disadvantages such as weak sensitivity and inability of gamma beam diagnostics. One can use X-ray films for beam profile diagnostics to reach submillimeter resolution [5], but such a technique is an off-line one
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