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Abstract
Recently studies are started on the application of volume reflection of particles in crystals for the steering beams (for extraction and collimation of a circulating beam in accelerators). Volume reflection is more efficient than channeling, but requires amplification of the deflection angle by applying multicrystals. The report discusses two new applications of multicrystals made like multistrip structures: (i) the property of effective deflection of particle beam was used to protect the septum magnets of the U-70 in the process of extraction of the proton beam with energy of 50 GeV; (ii) the possibility of generation of gamma radiation was studied in the secondary electron beam with energy of 7 GeV. In both cases, promising preliminary data were obtained.
Highlights
In the early 1950s, Ter-Mikaelyan and Uberall [1,2] theoretically showed that in an ordered medium such as single crystals the bremsstrahlung of electrons and positrons of high energy has an interference nature and differs from their radiation in amorphous media
The proposal of Tsyganov [3] to use bent single crystals to deflect positively charged particles was important in the physics of the interaction of charged particles with single crystals
The radiation of electrons and positrons in the plane fields of bent single crystals was predicted [6] and measured [7], which accompanies the process of volume reflection
Summary
In the early 1950s, Ter-Mikaelyan and Uberall [1,2] theoretically showed that in an ordered medium such as single crystals the bremsstrahlung of electrons and positrons of high energy has an interference nature and differs from their radiation in amorphous media. The radiation of electrons and positrons in the plane fields of bent single crystals was predicted [6] and measured [7], which accompanies the process of volume reflection
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