Dresden 2014 – wissenschaftliches Programm
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BE: Beschleunigerphysik
BE 8: Diagnostics and Instrumentation III
BE 8.7: Vortrag
Mittwoch, 2. April 2014, 11:15–11:30, ZEU 255
A highly sensitive cavity-based Schottky sensor for the Collector Ring at FAIR — •Matthias Hansli1, Andreas Penirschke1, Rolf Jakoby1, Peter Hülsmann2, and Wolfgang Kaufmann2 — 1IMP, TU Darmstadt, Darmstadt, Germany — 2GSI, Darmstadt, Germany
A Schottky Cavity Sensor is poposed for the Collector Ring at FAIR, a dedicated storage ring for secondary particles, rare isotopes, and antiprotons. The Sensor consists of a pillbox cavity with attached waveguide filters utilizing the TM010-mode at 200 MHz for longitudinal and the TM110-mode at 330 MHz for transversal Schottky measurements. Separated coupling structures are used for mode-selective coupling to measure longitudinal and transversal Schottky spectra independently. To allow for non-hermetic adjustable coupling and tuning devices as well as waveguide structures, a ceramic vacuum shielding inside the pillbox is introduced. Simulation investigating the influence of the ceramic and the coupling are shown. Measurements of a scaled demonstrator are compared to the simulations.