Coil failure effect in geomagnetic field compensation for particle detectors

  1. Cabo, Sara R. 156
  2. Maco, J. M. 23
  3. Suárez Gómez, Sergio Luis 34
  4. Bonavera, Laura 12
  5. Sanchez, Maria Luisa 12
  6. Santos, Jesús Daniel 12
  7. de Cos, Francisco Javier 23
  1. 1 Departamento de Física, Universidad de Oviedo
  2. 2 MOMA, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA)
  3. 3 Departamento de Explotación y prospección de Minas, Universidad de Oviedo
  4. 4 Departamento de Matemáticas, Universidad de Oviedo
  5. 5 2 MOMA, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA)
  6. 6 3 Departamento de Explotación y prospección de Minas, Universidad de Oviedo
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Journal:
The European Physical Journal Plus

ISSN: 2190-5444

Year of publication: 2025

Volume: 140

Issue: 7

Type: Article

DOI: 10.1140/EPJP/S13360-025-06579-4 GOOGLE SCHOLAR lock_openOpen access editor HANDLE: https://hdl.handle.net/10651/82106

More publications in: The European Physical Journal Plus

RUO. Repositorio Institucional de la Universidad de Oviedo: lock_openOpen access Handle

Abstract

Photomultiplier tubes (PMTs) in large Cherenkov detectors suffer from efficiency loss due to the Earth’s geomagneticfield, which alters electron trajectories. Active compensation using current-carrying coils is an effective solution but is susceptible tofailures that can compromise the homogeneity of the compensated field and degrade detector performance. This study systematicallyanalyzes the impact of individual coil failures on geomagnetic compensation, focusing on key evaluation parameters: the proportionof PMTs exposed to residual perpendicular magnetic field exceeding acceptable limits (P100) and the average residual perpendicularfield (< Bperp >). Furthermore, a fail-safe connection system utilizing multi-core cables and external reconnection points isintroduced, mitigating the effects of coil malfunctions and ensuring more stable long-term performance of large-scale detectors.

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