Author/Authors :
Ulmer، نويسنده , , S. and Blaum، نويسنده , , K. and Kracke، نويسنده , , H. and Mooser، نويسنده , , A. and Quint، نويسنده , , W. and Rodegheri، نويسنده , , C.C. and Walz، نويسنده , , J.، نويسنده ,
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.
Keywords :
Single particle detection system , Penning Trap , Helical resonator , low noise amplifier , Cryogenic particle detector
