Performance of photo-sensors for KM3NeT.
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| Title: | Performance of photo-sensors for KM3NeT. |
|---|---|
| Authors: | Dorosti Hasankiadeh, Q.1 q.dorosti.hasankiadeh@rug.nl, Kavatsyuk, O.1, Löhner, H.1, Peek, H.2, Steijger, J.2 |
| Source: | Nuclear Instruments & Methods in Physics Research Section A. Oct2013, Vol. 725, p158-161. 4p. |
| Subjects: | Neutrino detectors, Photodetectors, Particles (Nuclear physics), Neutrino interactions, Telescopes, Performance evaluation |
| Abstract: | Abstract: The future deep-sea neutrino telescope of multi cubic-km size, KM3NeT, has been designed for an efficient search for high energy neutrinos originating from galactic and extragalactic sources. The detection principle relies on the measurement of Cherenkov light emitted from relativistic charged secondary particles caused by the interaction of neutrinos with matter inside or surrounding the active detection volume. In order to provide a homogeneous photon acceptance and to reduce the environmental background by local coincidences between neighbouring photo sensors, a digital optical module (DOM) containing an array of 31 3-in. diameter photomultiplier tubes (PMTs) has been designed. Optimum performance requires sensitivity to single-photo electrons, high collection efficiency at low dark noise, homogeneous photo-cathode response and excellent timing properties. We have studied the response to single photo electrons of a newly developed 3-in. diameter PMT from ET Enterprises Ltd. A 2D-scanning system with a picosecond laser illuminating various positions on the photo-cathode surface was employed to study the timing and homogeneity of the PMT. Results of these investigations indicate good photo-cathode homogeneity, low dark noise on the sub-kHz level, and an average transit-time spread below 2ns. Simulations indicate a significantly improved signal-to-background ratio in the multi-PMT DOM as compared to a triplet of optical modules each housing a single 10-in. PMT. [Copyright &y& Elsevier] |
| Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Performance of photo-sensors for KM3NeT. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dorosti+Hasankiadeh%2C+Q%2E%22">Dorosti Hasankiadeh, Q.</searchLink><relatesTo>1</relatesTo><i> q.dorosti.hasankiadeh@rug.nl</i><br /><searchLink fieldCode="AR" term="%22Kavatsyuk%2C+O%2E%22">Kavatsyuk, O.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Löhner%2C+H%2E%22">Löhner, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Peek%2C+H%2E%22">Peek, H.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Steijger%2C+J%2E%22">Steijger, J.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Oct2013, Vol. 725, p158-161. 4p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Neutrino+detectors%22">Neutrino detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Photodetectors%22">Photodetectors</searchLink><br /><searchLink fieldCode="DE" term="%22Particles+%28Nuclear+physics%29%22">Particles (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Neutrino+interactions%22">Neutrino interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Telescopes%22">Telescopes</searchLink><br /><searchLink fieldCode="DE" term="%22Performance+evaluation%22">Performance evaluation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The future deep-sea neutrino telescope of multi cubic-km size, KM3NeT, has been designed for an efficient search for high energy neutrinos originating from galactic and extragalactic sources. The detection principle relies on the measurement of Cherenkov light emitted from relativistic charged secondary particles caused by the interaction of neutrinos with matter inside or surrounding the active detection volume. In order to provide a homogeneous photon acceptance and to reduce the environmental background by local coincidences between neighbouring photo sensors, a digital optical module (DOM) containing an array of 31 3-in. diameter photomultiplier tubes (PMTs) has been designed. Optimum performance requires sensitivity to single-photo electrons, high collection efficiency at low dark noise, homogeneous photo-cathode response and excellent timing properties. We have studied the response to single photo electrons of a newly developed 3-in. diameter PMT from ET Enterprises Ltd. A 2D-scanning system with a picosecond laser illuminating various positions on the photo-cathode surface was employed to study the timing and homogeneity of the PMT. Results of these investigations indicate good photo-cathode homogeneity, low dark noise on the sub-kHz level, and an average transit-time spread below 2ns. Simulations indicate a significantly improved signal-to-background ratio in the multi-PMT DOM as compared to a triplet of optical modules each housing a single 10-in. PMT. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.nima.2012.11.154 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 4 StartPage: 158 Subjects: – SubjectFull: Neutrino detectors Type: general – SubjectFull: Photodetectors Type: general – SubjectFull: Particles (Nuclear physics) Type: general – SubjectFull: Neutrino interactions Type: general – SubjectFull: Telescopes Type: general – SubjectFull: Performance evaluation Type: general Titles: – TitleFull: Performance of photo-sensors for KM3NeT. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dorosti Hasankiadeh, Q. – PersonEntity: Name: NameFull: Kavatsyuk, O. – PersonEntity: Name: NameFull: Löhner, H. – PersonEntity: Name: NameFull: Peek, H. – PersonEntity: Name: NameFull: Steijger, J. IsPartOfRelationships: – BibEntity: Dates: – D: 11 M: 10 Text: Oct2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 01689002 Numbering: – Type: volume Value: 725 Titles: – TitleFull: Nuclear Instruments & Methods in Physics Research Section A Type: main |
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