Speaker
Description
This paper presents the design of a novel semi-coaxial stripline pickup for wide-band beam diagnostics. Four electrodes inside the beam pipe form a quasi-coaxial transmission line that improves electromagnetic field control and provides a smooth impedance transition, mitigating the bandwidth limitations and impedance discontinuities typical of conventional stripline pickups. Electromagnetic simulations performed using CST Studio Suite demonstrate excellent impedance matching with a characteristic impedance $Z_0$ of $50\,\Omega \pm 0.2\,\Omega$. The pickup exhibits low reflections ($S_{11} < -40$ dB up to 6 GHz) together with a flat $S_{21}$ transmission response over a bandwidth exceeding 6 GHz. A prototype with achievable mechanical tolerances was built to validate the simulations. The paper compares the simulated and measured performance and discusses possible improvements for future design iteration.
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| Supervisor's name | Michal Krupa |
| Supervisor's email | michal.krupa@cern.ch |
| Paper submission software | LATeX |