High voltage capacitors for low background experiments

Low background experiments place stringent constraints on amount of radioactive impurities in the materials used for their assembly. Often these are in conflict with the constraints placed on the materials by their roles in the experiment. This is especially true for certain electronic components. A...

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Published inThe European physical journal. C, Particles and fields Vol. 73; no. 5; pp. 1 - 7
Main Authors O’Shaughnessy, C., Andreotti, E., Budjáš, D., Caldwell, A., Gangapshev, A., Gusev, K., Hult, M., Lubashevskiy, A., Majorovits, B., Schönert, S., Smolnikov, A.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.05.2013
Springer
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Cosmology
Capacitors
Decoupling
Detectors
Electronic components industry
Elementary Particles
Foils
Hadrons
Heavy Ions
High voltages
Materials selection
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Polyethylenes
Polytetrafluoroethylene
Polytetrafluoroethylenes
Quantum Field Theories
Quantum Field Theory
Special Article - Tools for Experiment and Theory
String Theory
High Voltage Line
Copper Foil
Liquid Argon
Germanium Detector
Spiral Coil
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Summary:Low background experiments place stringent constraints on amount of radioactive impurities in the materials used for their assembly. Often these are in conflict with the constraints placed on the materials by their roles in the experiment. This is especially true for certain electronic components. A high value, high voltage capacitor for use in low background experiments has been developed from specially selected radiopure materials. Electroformed copper foils are separated by polyethylene napthalate (PEN) foils and supported within a PTFE teflon spiral coil tube. The electrical performance as well as radiopurity are scrutinized here. With some minor modifications to tune the performance for the application, this capacitor can be well suited for a variety of applications in low background experiments. Here the use of the capacitor for high voltage (HV) decoupling in the operation of high purity germanium (HPGe) detectors is demonstrated.
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ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-013-2445-3