Successful cooling of a pixel tracker using gaseous helium: studies with a mock-up and a detector prototype
We report the successful operation of a functional pixel detector with gaseous helium cooling. Using an accurate mock-up beforehand, the cooling was validated. We use a miniature turbo compressor to propel the helium at 2 g/s under ambient pressure conditions with gas temperatures above 0 °C. Our ea...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
5 June 2023
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| In: |
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
Year: 2023, Volume: 1054, Pages: 1-17 |
| ISSN: | 1872-9576 |
| DOI: | 10.1016/j.nima.2023.168405 |
| Online Access: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.nima.2023.168405 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0168900223003959 
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| Author Notes: | Thomas Theodor Rudzki, Frank Meier Aeschbacher, Marin Deflorin, Niculin Flucher |
| Summary: | We report the successful operation of a functional pixel detector with gaseous helium cooling. Using an accurate mock-up beforehand, the cooling was validated. We use a miniature turbo compressor to propel the helium at 2 g/s under ambient pressure conditions with gas temperatures above 0 °C. Our earlier results based on computational fluid dynamics simulations and a much simpler mock-up are confirmed. With this, we paved the path to cool pixel detectors in experimental particle physics at heat densities up to 400 mW/cm2 using helium. This enables cooling of detectors with very low mass requirements, minimising the effects of multiple Coulomb scattering effectively. This technique requires sensors tolerant to be operated in a wide temperature range and a detector geometry to guide the helium flow adequately. The concept presented here is not limited to pixel detector applications and can be used to cool any surface with comparable heat-densities, only limited by shaping the helium gas flow. |
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| Item Description: | Gesehen am 08.05.2024 |
| Physical Description: | Online Resource |
| ISSN: | 1872-9576 |
| DOI: | 10.1016/j.nima.2023.168405 |