STI Publications - View Publication #14948
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Publication Information
| Title | Enhanced UV light detection using a p-terphenyl wavelength shifter | ||||
| Abstract | UV-glass photomultiplier tubes (PMTs) have poor photon detection efficiency for wavelengths below $300\,\text{nm}$ due to the opaqueness of the window material. Costly quartz PMTs could be used to enhance the efficiency below $300\,\text{nm}$. A less expensive solution that dramatically improves this efficiency is the application of a thin film of a p-terphenyl (PT) wavelength shifter on UV-glass PMTs. This improvement was quantified for Photonis XP4500B PMTs for wavelengths between $200\,\text{nm}$ and $400\,\text{nm}$. The gain factor ranges up to 5.4 $\pm$ 0.5 at a wavelength of $215\,\text{nm}$, with a material load of $110\pm10\,\mu\text{g}/\text{cm}^2$ ($894\,\text{nm}$). The wavelength shifter was found to be fully transparent for wavelengths greater than $300\,\text{nm}$. The resulting gain in detection efficiency, when used in a typical Cherenkov counter, was estimated to be of the order of 40\%. Consistent coating quality was assured by a rapid gain testing procedure using na | ||||
| Author(s) | Sylvester Joosten, Ed Kaczanowicz, Maurizio Ungaro, Melanie Rehfuss, K. Johnston, Zein-Eddine Meziani | ||||
| Publication Date | October 2017 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall B | ||||
| Funding Source | Nuclear Physics (NP), FG02-94ER4084 | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Nuclear Instruments & Methods in Physics Research, Section A |
| Refereed | Yes |
| Volume | 870 |
| Issue | |
| Page(s) | 110-115 |
Attachments/Datasets/DOI Link
| Document(s) |
1611.03467.pdf
(STI Document)
1611.03467.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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