Calibration and Characterization of the IceCube Photomultiplier Tube
Over 5,000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospher...
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ftcdlib:qt4jf7g2bw 2023-05-15T18:22:29+02:00 Calibration and Characterization of the IceCube Photomultiplier Tube Abbasi, R. 2010-01-28 application/pdf http://www.escholarship.org/uc/item/4jf7g2bw english eng eScholarship, University of California qt4jf7g2bw http://www.escholarship.org/uc/item/4jf7g2bw public Abbasi, R.(2010). Calibration and Characterization of the IceCube Photomultiplier Tube. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/4jf7g2bw Physics PMT neutrino cosmic rays ice Cherenkov article 2010 ftcdlib 2018-01-26T23:52:44Z Over 5,000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-inch diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before deployment. PMTs were illuminated with pulses ranging from single photons to saturation level. Parameterizations are given for the single photoelectron charge spectrum and the saturation behavior. Time resolution, late pulses and afterpulses are characterized. Because the PMTs are relatively large, the cathode sensitivity uniformity was measured. The absolute photon detection efficiency was calibrated using Rayleigh-scattered photons from a nitrogen laser. Measured characteristics are discussed in the context of their relevance to IceCube event reconstruction and simulation efforts. Article in Journal/Newspaper South pole University of California: eScholarship South Pole |
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Open Polar |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Physics PMT neutrino cosmic rays ice Cherenkov |
spellingShingle |
Physics PMT neutrino cosmic rays ice Cherenkov Abbasi, R. Calibration and Characterization of the IceCube Photomultiplier Tube |
topic_facet |
Physics PMT neutrino cosmic rays ice Cherenkov |
description |
Over 5,000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-inch diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before deployment. PMTs were illuminated with pulses ranging from single photons to saturation level. Parameterizations are given for the single photoelectron charge spectrum and the saturation behavior. Time resolution, late pulses and afterpulses are characterized. Because the PMTs are relatively large, the cathode sensitivity uniformity was measured. The absolute photon detection efficiency was calibrated using Rayleigh-scattered photons from a nitrogen laser. Measured characteristics are discussed in the context of their relevance to IceCube event reconstruction and simulation efforts. |
format |
Article in Journal/Newspaper |
author |
Abbasi, R. |
author_facet |
Abbasi, R. |
author_sort |
Abbasi, R. |
title |
Calibration and Characterization of the IceCube Photomultiplier Tube |
title_short |
Calibration and Characterization of the IceCube Photomultiplier Tube |
title_full |
Calibration and Characterization of the IceCube Photomultiplier Tube |
title_fullStr |
Calibration and Characterization of the IceCube Photomultiplier Tube |
title_full_unstemmed |
Calibration and Characterization of the IceCube Photomultiplier Tube |
title_sort |
calibration and characterization of the icecube photomultiplier tube |
publisher |
eScholarship, University of California |
publishDate |
2010 |
url |
http://www.escholarship.org/uc/item/4jf7g2bw |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Abbasi, R.(2010). Calibration and Characterization of the IceCube Photomultiplier Tube. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/4jf7g2bw |
op_relation |
qt4jf7g2bw http://www.escholarship.org/uc/item/4jf7g2bw |
op_rights |
public |
_version_ |
1766201891209871360 |