Bent crystals as a tool for manipulation of ultrarelativistic electron beams

Abstract

Channeling and coherent interactions of charged particles in crystals are known since the 60s and used as a tool for material analysis by low-energy ion channeling and for the generation of linearly polarized γ-beams through coherent bremsstrahlung at electron accelerators. We report on an experiment carried out at the MAinzer MIkrotron with the aim of investigating the electromagnetic radiation generated by 855 MeV electrons in a bent crystal. Such study allows one to investigate the influence of the crystalline curvature on the radiation emitted by sub-GeV electrons in a bent crystal and the possible application of this kind of radiation.

First design of a crystal-based extraction of 6 GeV electrons for the DESY II Booster Synchrotron

“…This will make high quality intense electron beams more accessible for a larger community, and consequently, will considerably speed up nuclear and particle physics detectors and generic detector R&D, as well as will be very useful for many projects in high-energy physics requiring fixed-target experiments. Some applications of crystals as X-ray and gamma sources [31,32,[49][50][51][52][53][54][55][56][57][58][59][60], compact electromagnetic calorimeters [55,56,61] and positron sources [62][63][64][65] could be also tested in these experiments. Furthermore, since FCC-ee is becoming one of the main after-LHC collider projects, electron/positron crystal-based extraction may provide an access to unique experimental conditions for ultrahigh energy fixed-target experiments to measure e.g.…”

“…Crystals were developed not only as beam steering devices, but also as innovative X-and γ -ray radiation sources [31,32,[49][50][51][52][53][54][55][56][57][58][59][60], compact electromagnetic calorimeters [55,56,61] and positron sources [62][63][64][65] based on the effect of channeling radiation (CR) [66,67]. This type of radiation allows to considerably increase the radiation intensity in comparison with bremsstrahlung.…”

First design of a crystal-based extraction of 6 GeV electrons for the DESY II Booster Synchrotron

“…This will make high quality intense electron beams more accessible for a larger community, and consequently, will considerably speed up nuclear and particle physics detectors and generic detector R&D, as well as will be very useful for many projects in high-energy physics requiring fixed-target experiments. Some applications of crystals as X-ray and gamma source [26,27,[30][31][32][33][34][35][36][37][38][39][40][41] and a positron source [65,66] could be also tested in these experiments. Furthermore, since FCC-ee is becoming the main after-LHC collider project, electron/positron crystal-based extraction may provide an access to unique experimental conditions for ultra-high energy fixed-target experiments to measure e.g.…”

“…These crystals were developed not only as beam steering devices, but also as innovative X-and γ-ray radiation sources [26,27,[30][31][32][33][34][35][36][37][38][39][40][41] based on the effect of channeling radiation (CR) [42,43]. This type of radiation allows to considerably increase the radiation intensity in comparison with bremsstrahlung.…”

Simulation code for modeling of coherent effects of radiation generation in oriented crystals

“…Channeling in bent [15][16][17][18][19][20] and periodically bent crystals, the latter case corresponding to a crystalline undulator [21][22][23], can be applied for the generation of x-ray and gamma radiation. Monte Carlo simulations are needed to predict the characteristic of the emitted radiation and need to combine the simulation of electron/positron motion in crystalline materials as well as the generation of radiation, which is not trivial.…”