University of Oulu

Poluianov, Stepan / Usoskin, Ilya / Du Toit, Straus: Upgrade of electronics of neutron monitors DOMC and DOMB.

Upgrade of electronics of neutron monitors DOMC and DOMB

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Author: Poluianov, Stepan1,2; Usoskin, Ilya1,2; Strauss, Du Toit3
Organizations: 1Sodankylä Geophysical Observatory, University of Oulu, Finland
2Space Physics and Astronomy Research Unit, University of Oulu, Finland
3Centre of Space Research, North-West University, Potchefstroom, South Africa
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
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Language: English
Published: Universitätsverlag Kiel, 2021
Publish Date: 2021-06-23


DOMC and DOMB neutron monitors (NM) operate at the Concordia research station (Dome C on the Antarctic plateau, 75°06’S, 123°23’E, 3233 m a.s.l.) since 2015. Their high elevation and proximity to the geomagnetic pole provide low atmospheric and geomagnetic cutoffs and, therefore, the exceptionally high sensitivity to lowenergy cosmic rays. The instruments are the so-called mini neutron monitors with BF3-filled counter tubes. DOMC has the standard design with a lead neutron multiplier and DOMB is a so-called “bare” (lead-free) unit. We report on a recent upgrade of the electronics heads of these instruments. The new heads have a modular architecture, built upon a single-board computer Raspberry Pi. The upgrade increases the capabilities of the instruments in two aspects: (1) measurements, particularly, of cosmic ray multiplicity; (2) remote control and monitoring. The new electronic heads register each pulse from a detector, giving a timestamp with microsecond precision, which is crucial for multiplicity measurements. Many important parameters (e.g., high voltage, pulse detection thresholds) can be controlled and adjusted remotely with the new design. High computing power allows performing data processing on the fly. The upgrade increases the capability of DOMC and DOMB in cosmic ray measurements and improves control of the operation of the neutron monitors.

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Series: Cosmic ray studies with neutron detectors
ISSN: 2748-3150
ISSN-E: 2748-3150
ISSN-L: 2748-3150
ISBN: 978-3-928794-64-0
Volume: 2021 : 1
Pages: 167 - 171
DOI: 10.38072/2748-3150/p21
Host publication: Proceedings of NMDB@Home 2020
Conference: NMDB@Home : virtual symposium on cosmic ray studies with neutron detector
Type of Publication: B3 Article in conference proceedings
Field of Science: 115 Astronomy and space science
Funding: The work was partly supported by FINNARP and Academy of Finland (projects 264378 CRIPA, 304435 CRIPA-X, ReSoLVE and 321882 ESPERA). We are thankful for the hospitality of the Italian Polar Programme PNRA (via the LTCPAA PNRA 2015/AC3 project) and the French Polar Institute IPEV.
Academy of Finland Grant Number: 264378
Detailed Information: 264378 (Academy of Finland Funding decision)
304435 (Academy of Finland Funding decision)
321882 (Academy of Finland Funding decision)
Copyright information: This work is published under the Creative Commons Attribution 4.0 International licence (CC BY 4.0). Please note that individual, appropriately marked parts of the work may be excluded from the licence mentioned or may be subject to other copyright conditions. If such thirdparty material is not under the Creative Commons license, any copying, editing or public reproduction is only permitted with the prior consent of the respective copyright owner or on the basis of relevant legal authorization regulations.