A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC
This paper details a novel, patent pending, abrasive machining manufacturing process for the formation of sub-millimetre holes in THGEMs, with the intended application in gaseous and dual-phase TPCs. Abrasive machining favours a non-ductile substrate such as glasses or ceramics. This innovative manu...
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MDPI AG
2021-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/20/9450 |
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| author | Adam Lowe Krishanu Majumdar Konstantinos Mavrokoridis Barney Philippou Adam Roberts Christos Touramanis |
| author_facet | Adam Lowe Krishanu Majumdar Konstantinos Mavrokoridis Barney Philippou Adam Roberts Christos Touramanis |
| author_sort | Adam Lowe |
| collection | DOAJ |
| description | This paper details a novel, patent pending, abrasive machining manufacturing process for the formation of sub-millimetre holes in THGEMs, with the intended application in gaseous and dual-phase TPCs. Abrasive machining favours a non-ductile substrate such as glasses or ceramics. This innovative manufacturing process allows for unprecedented versatility in THGEM substrates, electrodes, and hole geometry and pattern. Consequently, THGEMs produced via abrasive machining can be tailored for specific properties: for example, high stiffness, low total thickness variation, radiopurity, moisture absorption/outgassing and/or carbonisation resistance. This paper specifically focuses on three glass substrate THGEMs (G-THGEMs) made from Schott Borofloat 33 and fused silica. Circular and hexagonal hole shapes are also investigated. The G-THGEM electrodes are made from indium tin oxide (ITO), with a resistivity of 150 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">Ω</mi></semantics></math></inline-formula>/Sq. All G-THGEMs were characterised in an optical (EMCCD) readout GArTPC and compared to a traditionally manufactured FR4 THGEM, with their charging and secondary scintillation (S2) light production behaviour analysed. |
| first_indexed | 2024-03-10T06:45:18Z |
| format | Article |
| id | doaj.art-5b68652f26cc47f09af2864c2e708e61 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T06:45:18Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-5b68652f26cc47f09af2864c2e708e612023-11-22T17:18:46ZengMDPI AGApplied Sciences2076-34172021-10-011120945010.3390/app11209450A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPCAdam Lowe0Krishanu Majumdar1Konstantinos Mavrokoridis2Barney Philippou3Adam Roberts4Christos Touramanis5Department of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKDepartment of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKDepartment of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKDepartment of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKDepartment of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKDepartment of Physics, University of Liverpool, Oliver Lodge Bld, Oxford Street, Liverpool L69 7ZE, UKThis paper details a novel, patent pending, abrasive machining manufacturing process for the formation of sub-millimetre holes in THGEMs, with the intended application in gaseous and dual-phase TPCs. Abrasive machining favours a non-ductile substrate such as glasses or ceramics. This innovative manufacturing process allows for unprecedented versatility in THGEM substrates, electrodes, and hole geometry and pattern. Consequently, THGEMs produced via abrasive machining can be tailored for specific properties: for example, high stiffness, low total thickness variation, radiopurity, moisture absorption/outgassing and/or carbonisation resistance. This paper specifically focuses on three glass substrate THGEMs (G-THGEMs) made from Schott Borofloat 33 and fused silica. Circular and hexagonal hole shapes are also investigated. The G-THGEM electrodes are made from indium tin oxide (ITO), with a resistivity of 150 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">Ω</mi></semantics></math></inline-formula>/Sq. All G-THGEMs were characterised in an optical (EMCCD) readout GArTPC and compared to a traditionally manufactured FR4 THGEM, with their charging and secondary scintillation (S2) light production behaviour analysed.https://www.mdpi.com/2076-3417/11/20/9450glass thick gaseous electron multipliers (G-THGEMs)thick gaseous electron multipliers (THGEM)large electron multiplier (LEM)micropattern gaseous detectorstime projection chambers (TPC)noble liquid detectors |
| spellingShingle | Adam Lowe Krishanu Majumdar Konstantinos Mavrokoridis Barney Philippou Adam Roberts Christos Touramanis A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC Applied Sciences glass thick gaseous electron multipliers (G-THGEMs) thick gaseous electron multipliers (THGEM) large electron multiplier (LEM) micropattern gaseous detectors time projection chambers (TPC) noble liquid detectors |
| title | A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC |
| title_full | A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC |
| title_fullStr | A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC |
| title_full_unstemmed | A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC |
| title_short | A Novel Manufacturing Process for Glass THGEMs and First Characterisation in an Optical Gaseous Argon TPC |
| title_sort | novel manufacturing process for glass thgems and first characterisation in an optical gaseous argon tpc |
| topic | glass thick gaseous electron multipliers (G-THGEMs) thick gaseous electron multipliers (THGEM) large electron multiplier (LEM) micropattern gaseous detectors time projection chambers (TPC) noble liquid detectors |
| url | https://www.mdpi.com/2076-3417/11/20/9450 |
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