32 research outputs found
Performance of photosensors in a high-rate environment for gas Cherenkov detectors
The solenoidal large intensity device (SoLID) at Jefferson Lab will push the
boundaries of luminosity for a large-acceptance detector, which necessitates
the use of a light-gas threshold Cherenkov counter for online event selection.
Due to the high luminosity, the single-photon background rate in this counter
can exceed 160 kHz/cm at the photosensors. Therefore, it is essential to
validate the high-rate limits of the planned photosensors and readout
electronics in order to mitigate the risk of failure. We report on the design
and an early set of studies carried out using a small telescopic Cherenkov
device in a high-rate environment up to 60 kHz/cm, in Hall C at Jefferson
Lab. Commercially available multi-anode photomultipliers (MaPMT) and low-cost
large-area picosecond photodetectors (LAPPD) were tested using the JLab FADC250
modules for readout. The test beam results show that the MaPMT array and the
internal stripline LAPPD can detect and identify single-electron and
pair-production events in high-rate environments. Due to its higher quantum
efficiency, the MaPMT array provided a better separation between the
single-electron and the pair-production events compared to the internal
stripline LAPPD. A GEANT4 simulation confirms the experimental performance of
our telescopic device.Comment: 16 pages, 11 figure
The Solenoidal Large Intensity Device (SoLID) for JLab 12 GeV
The Solenoidal Large Intensity Device (SoLID) is a new experimental apparatus
planned for Hall A at the Thomas Jefferson National Accelerator Facility
(JLab). SoLID will combine large angular and momentum acceptance with the
capability to handle very high data rates at high luminosity. With a slate of
approved high-impact physics experiments, SoLID will push JLab to a new limit
at the QCD intensity frontier that will exploit the full potential of its 12
GeV electron beam. In this paper, we present an overview of the rich physics
program that can be realized with SoLID, which encompasses the tomography of
the nucleon in 3-D momentum space from Semi-Inclusive Deep Inelastic Scattering
(SIDIS), expanding the phase space in the search for new physics and novel
hadronic effects in parity-violating DIS (PVDIS), a precision measurement of
production at threshold that probes the gluon field and its
contribution to the proton mass, tomography of the nucleon in combined
coordinate and momentum space with deep exclusive reactions, and more. To meet
the challenging requirements, the design of SoLID described here takes full
advantage of recent progress in detector, data acquisition and computing
technologies. In addition, we outline potential experiments beyond the
currently approved program and discuss the physics that could be explored
should upgrades of CEBAF become a reality in the future.Comment: This white paper for the SoLID program at Jefferson Lab was prepared
in part as an input to the 2023 NSAC Long Range Planning exercise. To be
submitted to J. Phys.
Key4hep: Progress Report on Integrations
Detector studies for future experiments rely on advanced software tools to estimate performance and optimize their design and technology choices. The Key4hep project provides a flexible turnkey solution for the full experiment life-cycle based on established community tools such as ROOT, Geant4, DD4hep, Gaudi, podio and spack. Members of the CEPC, CLIC, EIC, FCC, and ILC communities have joined to develop this framework and have merged, or are in the progress of merging, their respective software environments into the Key4hep stack.
These proceedings will give an overview over the recent progress in the Key4hep project: covering the developments towards adaptation of state-of-theart tools for simulation (DD4hep, Gaussino), track and calorimeter reconstruction (ACTS, CLUE), particle flow (PandoraPFA), analysis via RDataFrame, and visualization with Phoenix, as well as tools for testing and validation