Performance of a coarsely pixelated LAPPD photosensor for the SoLID gas Cherenkov detectors
arxiv(2024)
Abstract
The SoLID spectrometer gas Cherenkov counters require photosensors that
operate in a high luminosity and high background environment. In its reference
design, a configuration of 9 or 16 tiled multi-anode photomultipliers (MaPMTs)
covers the sensing area. To evaluate the use of a pixelated INCOM Large Area
Picosecond Photodetector (LAPPDTM) as an alternative to cover the same area, we
tested the performance of this photosensor in realistic SoLID running
conditions in Hall C at the Thomas Jefferson National Accelerator Facility
(TJNAF, a.k.a Jefferson Lab or JLab). The results of this test confirmed that
the coarse-pixelated (2.5x2.5 cm2 pixel size) LAPPD is capable of handling the
total projected signal and background rates of the three pillar experiments of
SoLID. The photosensor detected Cherenkov signals with the capability of
separating single-electron events from pair production events while rejecting
background. Although the design was not aimed at Ring Imaging Cherenkovs,
Cherenkov disk images were captured in two gas radiators. Through a direct
comparison with a GEANT4 simulation, we confirmed the experimental performance
of the LAPPD.
MoreTranslated text
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined