MEPhI, Moscow, Russia
There is a design of a compact photon source based on inverse Compton scattering at NRNU MEPhI. Updated synchrotron lattice, electron dynamics simulation and beam instabilities studies are presented.
MEPhI, Moscow, Russia
NRC, Moscow, Russia
BNRU, Belgorod, Russia
BelSU/LRP, Belgorod, Russia
Compton backscattering* is a promising mechanism for engineering of a bright, compact and versatile X-ray source: with dimensions being significantly smaller, the brightness of this source is comparable with that of synchrotron radiation. Nowadays, active researches are underway on various aspects of this phenomenon** aiming at increasing of radiation intensity and quality. In modern science, such kind of research is necessarily accompanied by the computer simulations. In this report, we are talking about creation and implementation of the Compton backscattering module into the Geant4 package***, which is the leading simulation toolkit in high-energy physics, accelerator physics, medical physics, and space studies. Created module of Compton backscattering has been implemented as a discrete physical process and operates with a fixed light target (a virtual volume with the properties of a laser beam), with which a beam of charged particles interacts. Such a description allows user to flexibly change necessary parameters depending on the problem being solved, which opens up new possibilities for using Geant4 in the studied area.
* K.T. Phuoc et al., Nat. Photonics 6, 308 (2012).
** A. Ovodenko et al., Appl. Phys. Lett. 109, 253504 (2016).
*** S. Agostinelli et al., Nucl. Instrum. Meth. A 506, 250 (2003).
IHEP, Moscow Region, Russia
Periodically deformed crystals have long attracted at-tention as "crystalline undulators". In the experi-ment carried out at the U-70 accelerator, the radiation of positrons moving in a periodically deformed crystal was observed. Experimental evidence has been obtained for an undulator peak in a radiation spectrum, which is quali-tatively consistent with calculations. It is shown that most of the emitted energy is due to hard photons with energies of tens of MeV as a result of channeling and reflection of particles, whose spectral density is several times higher than the radiation in an amorphous target.
