Da\phi ne gamma-rays factory

TL;DR

This paper proposes a gamma-ray source using Compton collisions between a high-energy electron beam and a high-power laser, producing tunable gamma rays with high spectral density suitable for nuclear physics experiments.

Contribution

It introduces a novel gamma factory concept utilizing DAΦNE electron beam and laser technology, with detailed analysis of its properties and a preliminary accelerator design.

Findings

Gamma beam energy tunable from 2 to 9 MeV.

Gamma flux and spectral density comparable or superior to existing sources.

Perturbation analysis of electron beam dynamics included.

Abstract

Gamma sources with high flux and spectral densities are the main requirements for new nuclear physics experiments to be performed in several worldwide laboratories and envisaged in the ELI-NP (Extreme Light Infrastructure-Nuclear Physics) project or in the IRIDE (Interdisciplinary Research Infrastructure with Dual Electron Linacs) proposals. The paper is focalized on an experiment of gamma photons production using Compton collisions between the DA\Phi NE electron beam and a high average power laser pulse, amplified in a Fabry-P\'erot optical resonator. The calculations show that the resulting gamma beam source has extremely interesting properties in terms of spectral density, energy spread and gamma flux comparable (and even better) with the last generation gamma sources. The energy of the gamma beam depends on the adopted laser wavelength and can be tuned changing the energy of the electron ring. In particular we have analyzed the case of a gamma factory tunable in the 2-9 MeV range. The main parameters of this new facility are presented and the perturbation on the transverse and longitudinal electron beam dynamics is discussed. A preliminary accelerator layout to allow experiments with the gamma beam is presented with a first design of the accelerator optics.