The fast X-ray detector system of the FAMU experiment at RAL

Abstract

The FAMU experiment at RAL has been designed to study the hyperfine splitting (HFS) of muonic hydrogen and thus measure the Zemach radius of the proton, with a precision better than 1 %. The HFS transition is excited by a tunable MIR laser at ~ 6790 nm and is recognized by delayed ($\mu$O) X-ray emission around 130-170 keV. The fast X-ray detection system is based on 34 scintillating LaBr3:Ce crystals and one HPGe detector for inter-calibration.

References in corpus (6)

• Large area LaBr3:Ce crystals read by SiPM arrays with improved timing and temperature gain drift control
• Investigating the Proton Structure: The FAMU experiment
• Improving the Time Resolution of Large-Area LaBr3:Ce Detectors with SiPM Array Readout
• Ce:LaBr${}_3$ crystals with SiPM array readout and temperature control for the FAMU experiment at RAL
• Online control of the gain drift with temperature of SiPM arrays used for the readout of LaB${}_3$:Ce crystals
• Status of the detector setup for the FAMU experiment at RIKEN-RAL for a precision measurement of the Zemach radius of the proton in muonic hydrogen