Effect of a sweeping conductive wire on electrons stored in a Penning-like trap between the KATRIN spectrometers
| Autor: | J. Bonn, K. Valerius, M. Zbořil, C. Weinheimer, B. Ostrick, Th. Thümmler, Ferenc Glück, Marcus Beck, Ernst W. Otten, H.-W. Ortjohann, K. Essig |
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| Rok vydání: | 2010 |
| Předmět: |
Physics
Nuclear and High Energy Physics Physics - Instrumentation and Detectors Spectrometer FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Electron Penning trap Magnetic field Trap (computing) Nuclear Experiment (nucl-ex) Atomic physics Nuclear Experiment Electron neutrino Electrical conductor KATRIN |
| Zdroj: | The European Physical Journal A. 44:499-511 |
| ISSN: | 1434-601X 1434-6001 |
| DOI: | 10.1140/epja/i2010-10959-1 |
| Popis: | The KATRIN experiment is going to search for the mass of the electron antineutrino down to 0.2 eV/c^2. In order to reach this sensitivity the background rate has to be understood and minimised to 0.01 counts per second. One of the background sources is the unavoidable Penning trap for electrons due to the combination of the electric and magnetic fields between the pre- and the main spectrometer at KATRIN. In this article we will show that by sweeping a conducting wire periodically through such a particle trap stored particles can be removed, an ongoing discharge in the trap can be stopped, and the count rate measured with a detector looking at the trap is reduced. Final version published in EPJ A, 14 pages, 19 figures (21 files) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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