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Published January 16, 2023 | Version v1
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Strong enhancement of electromagnetic shower development induced by high-energy photons in a thick oriented tungsten crystal

  • 1. INFN Ferrara
  • 2. INFN Frascati

Description

We have observed a significant enhancement in the energy deposition by 25-100 GeV photons in a 1 cm thick tungsten crystal oriented along its  <111> lattice axes (data of Fig. 2). At 100 GeV, this enhancement, with respect to the value observed without axial alignment, is more than twofold. This effect, together with the measured huge increase in secondary particle generation (data of Fig. 3) is ascribed to the acceleration of the electromagnetic shower development by the strong axial electric field. The experimental results have been critically compared with a newly developed Monte Carlo adapted for use with crystals of multi-X_0 thickness (data of Fig.2, 3 and 4). These results may prove to be of significant interest for the development of high-performance photon absorbers and highly compact electromagnetic calorimeters and beam dumps for use at the energy and intensity frontiers.

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Additional details

Related works

Funding

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Experiments with Kaons at CERN 1806430
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SELDOM – Search for the electric dipole moment of strange and charm baryons at LHC 771642
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Ultra-Rare Kaon Decay Experiments at CERN 1506088
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TRILLION – Steering and radiation effects in oriented crystals and their applications implementation into Geant4 101032975
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TECHNO-CLS – Emerging technologies for crystal-based gamma-ray light sources 101046458
European Commission