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A cryogenic detection system at 28.9MHz for the non-destructive observation of a single proton at low particle energy

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Ruprecht Karls-Universität Heidelberg;

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Rodegheri,  Cricia C.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Institut für Physik,JohannesGutenberg-Universität;

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Citation

Ulmer, S., Blaum, K., Kracke, H., Mooser, A., Quint, W., Rodegheri, C. C., et al. (2012). A cryogenic detection system at 28.9MHz for the non-destructive observation of a single proton at low particle energy. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 705, 55-60. doi:10.1016/j.nima.2012.12.071.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-B5CA-6
Abstract
A highly sensitive detection system for the non-destructive measurement of the cyclotron frequency of a single proton stored in a cryogenic Penning trap is described. The detector consists of a low noise GaAs field effect transistor amplifier combined with a copper helical resonator with high quality factor. The resonance frequency can be tuned with a GaAs-varactor diode. Connected to the Penning trap a quality factor of 1250 at 28.9 MHz is achieved. With this detection system the signal of a single proton at a cyclotron mode-energy of only 10 meV was resolved.