@article{oai:repo.qst.go.jp:00083398,
 author = {Chakraborti, Sreemanti and L. Feng, Jonathan and Kevin Koga, James and Mauro Valli and Kevin Koga, James},
 journal = {Physical Review D},
 month = {Sep},
 note = {The Gamma Factory is a proposal to backscatter laser photons off a beam of partially-stripped ions at the LHC, producing a beam of $\sim 10~\mev$ to $1~\gev$ photons with intensities of $10^{16}$ to $10^{18}~\text{s}^{-1}$.  This implies $\sim 10^{23}$ to $10^{25}$ photons on target per year, many orders of magnitude greater than existing light sources and also far greater than all current and planned electron and proton fixed target experiments.  We determine the Gamma Factory's discovery potential through ``dark Compton scattering,'' $\gamma e \to e X$, where $X$ is a new, weakly-interacting particle.  For dark photons and other new gauge bosons with masses in the 1~to~100 MeV range, we show that the Gamma Factory has the potential to discover new particles with couplings $\varepsilon \sim 10^{-9}$ to $10^{-5}$.   This range includes couplings far below those probed by other terrestrial experiments, which were previously thought to be accessible only to astrophysical probes.  We outline the requirements of an experiment to realize this potential and determine the sensitivity reach for various experimental configurations.},
 pages = {055023-1--055023-13},
 title = {Gamma factory searches for extremely weakly interacting particles},
 volume = {104},
 year = {2021}
}