First Operation of a Resistive Shell Liquid Argon Time Projection Chamber: A New Approach to Electric-Field Shaping

Berner, Roman; Chen, Yifan; Ereditato, Antonio; Koller, Patrick P.; Kreslo, Igor; Lorca, David; Mettler, Thomas; Miao, Ting; Piastra, Francesco; Sinclair, James R.; Weber, Michael S. (2019). First Operation of a Resistive Shell Liquid Argon Time Projection Chamber: A New Approach to Electric-Field Shaping. Instruments, 3(2), p. 28. MDPI 10.3390/instruments3020028

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We present a new technology for the shaping of the electric field in Time Projection Chambers (TPCs) using a carbon-loaded polyimide foil. This technology allows for the minimisation of passive material near the active volume of the TPC and, thus, is capable to reduce background events originating from radioactive decays or scattering on the material itself. Furthermore, the high and continuous electric resistivity of the foil limits the power dissipation per unit area and minimizes the risks of damages in the case of an electric field breakdown. Replacing the conventional field cage with a resistive plastic film structure called “shell” decreases the number of components within the TPC and, therefore, reduces the potential points of failure when operating the detector. A prototype liquid argon (LAr) TPC with such a resistive shell and with a cathode made of the same material was successfully tested for long-term operation with electric field values up to 1.6 k V cm−1 . The experiment shows that it is feasible to successfully produce and shape the electric field in liquefied noble-gas detectors with this new technology.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Berner, Roman Matthias; Chen, Yifan; Ereditato, Antonio; Koller, Patrick Pascal; Kreslo, Igor; Lorca Galindo, David; Mettler, Thomas Josua; Piastra, Francesco; Sinclair, James Robert and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

2410-390X

Publisher:

MDPI

Language:

English

Submitter:

Anja Ebeling

Date Deposited:

01 May 2020 11:59

Last Modified:

29 May 2020 09:35

Publisher DOI:

10.3390/instruments3020028

BORIS DOI:

10.7892/boris.143822

URI:

https://boris.unibe.ch/id/eprint/143822

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