Publication

Design and Performance of MiniFIT, the small-scale version of the HERD particle tracker

2024

Abstract

The High Energy cosmic-Radiation Detection facility (HERD) will be the largest calorimetric experiment dedicated to the direct detection of cosmic rays. HERD aims at probing potential dark-matter signatures by detecting electrons from 10 GeV, and photons from 500 MeV, up to 100 TeV. It will also measure the flux of cosmic protons and heavier nuclei up to a few PeV per nucleon, shedding light on the origin and propagation mechanisms of high-energy cosmic rays. HERD will be equipped with a scintillating-fiber tracker (FIT) read out with silicon photomultipliers. It will enable the reconstruction of charged particle trajectories, the measurement of their absolute electric charge, the enhancement of the conversion of photons into electron-positron pairs. A miniature version of the FIT sector, called MiniFIT, was designed, built and tested with particle beams at CERN. This contribution will delve into the design and physics performance of MiniFIT, particularly focusing on its position resolution and charge measurement capability.

Official source

https://infoscience.epfl.ch/entities/publication/b62aabe6-6150-426d-9829-581819ce4d04

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2024

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b62aabe6-6150-426d-9829-581819ce4d04

About this result

Related concepts (32)

Cosmic ray

Cosmic rays are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the Solar System in our own galaxy, and from distant galaxies. Upon impact with Earth's atmosphere, cosmic rays produce showers of secondary particles, some of which reach the surface, although the bulk is deflected off into space by the magnetosphere or the heliosphere.

Ultra-high-energy cosmic ray

In astroparticle physics, an ultra-high-energy cosmic ray (UHECR) is a cosmic ray with an energy greater than 1 EeV (1018 electronvolts, approximately 0.16 joules), far beyond both the rest mass and energies typical of other cosmic ray particles. These particles are extremely rare; between 2004 and 2007, the initial runs of the Pierre Auger Observatory (PAO) detected 27 events with estimated arrival energies above 5.7e19eV, that is, about one such event every four weeks in the 3000 km2 area surveyed by the observatory.

Particle accelerator

A particle accelerator is a machine that uses electromagnetic fields to propel charged particles to very high speeds and energies, and to contain them in well-defined beams. Large accelerators are used for fundamental research in particle physics. The largest accelerator currently active is the Large Hadron Collider (LHC) near Geneva, Switzerland, operated by the CERN. It is a collider accelerator, which can accelerate two beams of protons to an energy of 6.5 TeV and cause them to collide head-on, creating center-of-mass energies of 13 TeV.

Related publications (11)

Design and Performance of MiniFIT, the small-scale version of the HERD particle tracker

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