Proposal for an LSW experiment (light shining through walls) at ELI-Beamlines

Bruno J. Le Garrec; Jakub Grosz

doi:10.1117/12.2178745

1 May 2015 Proposal for an LSW experiment (light shining through walls) at ELI-Beamlines

Bruno J. Le Garrec, Jakub Grosz

Proceedings Volume 9515, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers II; 95150O (2015) https://doi.org/10.1117/12.2178745
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

The most promising approach for detecting WISPs (Weakly Interacting Slim Particles) is to use their small coupling to photons, which detection is easy, even at the single particle level. This is what is done in “light shining through the wall” experiments, which are based on the probability that a photon may be converted into a WISP, which would traverse a light-tight wall without interacting, then have a chance of being converted back into a photon with the same frequency and direction as the original one¹. Because of the smallness of the WISPs-photon couplings, it is valuable to use the highest photon fluxes available together with a high magnetic field. In the near future, another interesting hidden-sector particle can be searched for on laser facilities, namely a hidden-sector photon (HP), also called paraphoton or dark photon. Indeed, the recent WMAP-7 observations and interpretations² hint for an extra neutrino-like particle (the total number of neutrino species is found to be 4.34 ± 0.87 with 68% Confidence Level), which could be accounted for by a hidden photon with a mass μ and a HP-photon coupling χ in the parameters range accessible with laser shots. At ELIBeamlines, there will be a 1.5-kJ laser (L4) running at 1 shot per mn; it is therefore possible to have a dedicated LSW experiment inside one of the facility rooms that would take advantage both of the large number of photons delivered and of the “high repetition rate” of this laser.

Citation Download Citation

Bruno J. Le Garrec and Jakub Grosz "Proposal for an LSW experiment (light shining through walls) at ELI-Beamlines", Proc. SPIE 9515, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers II, 95150O (1 May 2015); https://doi.org/10.1117/12.2178745

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KEYWORDS

Photons

Particles

Laser applications

Mirrors

Pulsed laser operation

Physics

Laser systems engineering

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