ausblenden:
Schlagwörter:
High Energy Physics - Experiment, hep-ex, Physics, Instrumentation and Detectors, physics.ins-det
MPINP:
Research group A. Di Piazza – Division C. H. Keitel
Zusammenfassung:
Measuring signatures of strong-field quantum electrodynamics (SF-QED)
processes in an intense laser field is an experimental challenge: it requires
detectors to be highly sensitive to single electrons and positrons in the
presence of the typically very strong x-ray and $\gamma$-photon background
levels. In this paper, we describe a particle detector capable of diagnosing
single leptons from SF-QED interactions and discuss the background level
simulations for the upcoming Experiment-320 at FACET-II (SLAC National
Accelerator Laboratory). The single particle detection system described here
combines pixelated scintillation LYSO screens and a Cherenkov calorimeter. We
detail the performance of the system using simulations and a calibration of the
Cherenkov detector at the ELBE accelerator. Single 3 GeV leptons are expected
to produce approximately 537 detectable photons in a single calorimeter
channel. This signal is compared to Monte-Carlo simulations of the experiment.
A signal-to-noise ratio of 18 in a single Cherenkov calorimeter detector is
expected and a spectral resolution of 2% is achieved using the pixelated LYSO
screens.
