Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector
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arXiv
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| Natura: | Preprint |
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2024
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| author | Gupta, V. Araujo, G. R. Babicz, M. Baudis, L. Chiu, P. -J. Choudhary, S. Goldbrunner, M. Hamer, A. Kuźniak, M. Kuźwa, M. Leonhardt, A. Montagna, E. Nieradka, G. Parkinson, H. B. Pietropaolo, F. Pollmann, T. R. Resnati, F. Schönert, S. Szelc, A. M. Thieme, K. Walczak, M. |
| author_facet | Gupta, V. Araujo, G. R. Babicz, M. Baudis, L. Chiu, P. -J. Choudhary, S. Goldbrunner, M. Hamer, A. Kuźniak, M. Kuźwa, M. Leonhardt, A. Montagna, E. Nieradka, G. Parkinson, H. B. Pietropaolo, F. Pollmann, T. R. Resnati, F. Schönert, S. Szelc, A. M. Thieme, K. Walczak, M. |
| contents | Liquid argon detectors rely on wavelength shifters for efficient detection of scintillation light. The current standard is tetraphenyl butadiene (TPB), but it is challenging to instrument on a large scale. Poly(ethylene 2,6-naphthalate) (PEN), a polyester easily manufactured as thin sheets, could simplify the coverage of large surfaces with wavelength shifters. Previous measurements have shown that commercial grades of PEN have approximately 50% light conversion efficiency relative to TPB. Encouraged by these results, we conducted a large-scale measurement using $4~m^2$ combined PEN and specular reflector foils in a two-tonne liquid argon dewar to assess its stability over approximately two weeks. This test is crucial for validating PEN as a viable substitute for TPB. The setup used for the measurement of the stability of PEN as a wavelength shifter is described, together with the first results, showing no evidence of performance deterioration over a period of 12 days. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_17934 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector Gupta, V. Araujo, G. R. Babicz, M. Baudis, L. Chiu, P. -J. Choudhary, S. Goldbrunner, M. Hamer, A. Kuźniak, M. Kuźwa, M. Leonhardt, A. Montagna, E. Nieradka, G. Parkinson, H. B. Pietropaolo, F. Pollmann, T. R. Resnati, F. Schönert, S. Szelc, A. M. Thieme, K. Walczak, M. Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment Nuclear Experiment Liquid argon detectors rely on wavelength shifters for efficient detection of scintillation light. The current standard is tetraphenyl butadiene (TPB), but it is challenging to instrument on a large scale. Poly(ethylene 2,6-naphthalate) (PEN), a polyester easily manufactured as thin sheets, could simplify the coverage of large surfaces with wavelength shifters. Previous measurements have shown that commercial grades of PEN have approximately 50% light conversion efficiency relative to TPB. Encouraged by these results, we conducted a large-scale measurement using $4~m^2$ combined PEN and specular reflector foils in a two-tonne liquid argon dewar to assess its stability over approximately two weeks. This test is crucial for validating PEN as a viable substitute for TPB. The setup used for the measurement of the stability of PEN as a wavelength shifter is described, together with the first results, showing no evidence of performance deterioration over a period of 12 days. |
| title | Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector |
| topic | Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2411.17934 |