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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The cosmic ray veto system of the Mario Schenberg gravitational wave detector

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Author(s):
Da Silva Costa, C. F. [1, 2] ; Fauth, A. C. [3] ; Pereira, L. A. S. [2] ; Aguiar, O. D. [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo - Brazil
[2] INPE, Dept Astrofis, BR-12227010 Sao Jose Dos Campos - Brazil
[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP; v. 752, p. 65-70, JUL 11 2014.
Web of Science Citations: 1
Abstract

The Mario Schenberg gravitational wave antenna is a spherical cryogenic resonant mass detector located at IFUSP, Sao Paulo, It is well known that cosmic rays interact with cryogenic resonant mass detectors generating acoustic signals. Depending on the shower energy, they could provide a substantial background noise which should be vetoed to reduce the false alarm rate. For this purpose, in December 2011, we have installed a cosmic ray veto system which is, since then, acquiring data. The cosmic ray veto system is composed of three particle detectors containing each one a scintillator, a photomultiplier and a tension divider. As the shower number of particles is used to define a threshold for the veto, it is important that the cosmic ray veto provides a linear response to high-energy cosmic ray events. The veto setup response was optimized and allows measurements up to 23,000 equivalent muon charge particles per square meter. We present here the experimental setup, its calibration and performance. Finally, to confirm the linearity of the data acquisition we show the measured particle multiplicity. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/00621-5 - The cosmic-ray veto of the gravitational-wave antenna Schenberg
Grantee:Luiz Augusto Stuani Pereira
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 06/56041-3 - New physics from space: gravitational waves
Grantee:Odylio Denys de Aguiar
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 10/09101-6 - Development of the data analysis pipeline for burst and periodic signals in the Mario Schenberg gravitational wave detector and viability study of microwave oscilators in space
Grantee:Carlos Filipe da Silva Costa
Support Opportunities: Scholarships in Brazil - Post-Doctoral