The calibration of the ICARUS photo-detection system is based on a low power laser diode at 405 nm. Laser pulses arrive to one optical switch and then are sent to 36 UHV flanges, by 20 meters long optical patches. Light is then delivered to the ten PMTs connected to a single flange, by 7 m long injection optical patches. Extensive tests of the used components and care in the design of the optical system have guaranteed to each PMT a sizeable calibration signal with minimal distortion, with respect to the original one. Gain equalization of PMTs has reached a 1% resolution. In this procedure data from background photons were also used. The distribution of the PMTs’ signal arrival time has a distribution with a resolution less than 1 ns, thus allowing a good determination of the absolute event timing. The status of the laser calibration system with its possible upgrades will be reported.

Bonesini, M., Benocci, R., Bertoni, R., Chatterjee, A., Diwan, M., Menegolli, A., et al. (2023). Calibration of the ICARUS cryogenic photo-detection system at FNAL. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 1048(March 2023) [10.1016/j.nima.2022.167940].

Calibration of the ICARUS cryogenic photo-detection system at FNAL

Bonesini, M
;
Benocci, R;
2023

Abstract

The calibration of the ICARUS photo-detection system is based on a low power laser diode at 405 nm. Laser pulses arrive to one optical switch and then are sent to 36 UHV flanges, by 20 meters long optical patches. Light is then delivered to the ten PMTs connected to a single flange, by 7 m long injection optical patches. Extensive tests of the used components and care in the design of the optical system have guaranteed to each PMT a sizeable calibration signal with minimal distortion, with respect to the original one. Gain equalization of PMTs has reached a 1% resolution. In this procedure data from background photons were also used. The distribution of the PMTs’ signal arrival time has a distribution with a resolution less than 1 ns, thus allowing a good determination of the absolute event timing. The status of the laser calibration system with its possible upgrades will be reported.
Articolo in rivista - Articolo scientifico
Calibration; Laser diodes; PMTs;
English
18-dic-2022
2023
1048
March 2023
167940
reserved
Bonesini, M., Benocci, R., Bertoni, R., Chatterjee, A., Diwan, M., Menegolli, A., et al. (2023). Calibration of the ICARUS cryogenic photo-detection system at FNAL. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 1048(March 2023) [10.1016/j.nima.2022.167940].
File in questo prodotto:
File Dimensione Formato  
Bonesini-2023-Nuclear Inst Methods Physics Research A-VoR.pdf

Solo gestori archivio

Descrizione: Research Article
Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Tutti i diritti riservati
Dimensione 654.32 kB
Formato Adobe PDF
654.32 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/403775
Citazioni
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
Social impact