Proof of Principle Experiments for Compton Scattering of a Stored Photon in a Supercavity

Abstract

We observed that Compton-scattered photons are enhanced in a supercavity. We can increase the laser beam intensity in such a cavity and obtain a reasonable number of scattered photons. In our experiments, an e-beam of ∼82 keV and a 1 µ m wavelength laser beam were used in the supercavity. The storage rate of the supercavity was ∼4000 times. The wavelength of the scattered photons was calculated to be 364 nm and the flux to be approximately 400 [photons/s]. The experimental results agree well with the theoretical prediction.

Experimental study on an electron-beam energy recovery system using a multistage collector

“…However, the experiment in this study suggests that the high current energy recovery system would be useful for high-efficiency and high-power free-electron laser operation, energy transportation, recirculation of output beam current, 10 and proof-of-principle experiments for Compton scattering of a stored photon in a supercavity, 2,11 where proper beam damping is an important factor in reducing thermal heating of the target materials and avoiding noise around the interaction region. It was inferred that energetic electrons that were striking the metal surface (E 4 ) impart some energy to electrons inside the metal.…”

Study, design and realization of a Fabry-Perot cavity for the Compton polarimeter of TJNAF; Etude, conception et realisation d'une cavite Fabry-Perot pour le polarimetre Compton de TJNAF

“…Uneéquipe japonaise [96] La puissance dans la cavité est maintenue par un asservissement de la fréquence du laserà une fréquence de résonance définie par la cavité (méthode Pound-Drever). La stabilité de l'asservissement aété optimisée par la détermination, après installation sur accélérateur, de la fonction de transfert de la cavité par une méthode de perturbation.…”

Long-Axis Fabry–Pérot Cavity for Intense Laser-Compton Photon Beam

“…An intense quasi-monochromatic photon beam of about 1-40 MeV is useful for nuclear resonance experiments, 1,2) transmutation of long-lived fission products, 3,4) astrophysics, 5,6) nuclear physics studies, [7][8][9] and nondestructive inspection of industrial products. 10,11) The laser-Compton photon facility of the National Institute of Advanced Industrial Science and Technology (AIST-LCS) produces 1 to 40 MeV quasi-monochromatic photons with intensities of about 10 5 photons/s, which is used as a unique photon source.…”