On the Electric Breakdown in Liquid Argon at Centimeter Scale

Auger, Martin; Blatter, Alexander; Ereditato, Antonio; Göldi, Damian; Janos, Stefan; Kreslo, Igor; Lüthi, Matthias; Rudolf von Rohr, Christoph; Strauss, Thomas; Weber, Michael (2016). On the Electric Breakdown in Liquid Argon at Centimeter Scale. Journal of instrumentation, 11(3), p. 3017. Institute of Physics Publishing IOP 10.1088/1748-0221/11/03/P03017

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We present a study on the dependence of electric breakdown discharge properties on electrode geometry and the breakdown field in liquid argon near its boiling point. The measurements were performed with a spherical cathode and a planar anode at distances ranging from 0.1 mm to 10.0 mm. A detailed study of the time evolution of the breakdown volt-ampere characteristics was performed for the first time. It revealed a slow streamer development phase in the discharge. The results of a spectroscopic study of the visible light emission of the breakdowns complement the measurements. The light emission from the initial phase of the discharge is attributed to electro-luminescence of liquid argon following a current of drifting electrons. These results contribute to set benchmarks for breakdown-safe design of ionization detectors, such as Liquid Argon Time Projection Chambers (LAr TPC).

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Auger, Martin; Blatter, Alexander; Ereditato, Antonio; Göldi, Damian; Janos, Stefan; Kreslo, Igor; Lüthi, Matthias; Rudolf von Rohr, Christoph; Strauss, Thomas and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

1748-0221

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Ciro Pistillo

Date Deposited:

06 Jul 2016 08:43

Last Modified:

06 Jul 2016 08:43

Publisher DOI:

10.1088/1748-0221/11/03/P03017

BORIS DOI:

10.7892/boris.82760

URI:

https://boris.unibe.ch/id/eprint/82760

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