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Within the ALBA II upgrade project, a novel button Beam Position Monitor (BPM) design has been prototyped. This contribution presents the characterization results obtained from button prototypes manufactured by two distinct companies, along with the derived conclusions. Furthermore, we also present the preliminary design of a new button intended for direct welding to a copper vacuum chamber.
Three different types of Beam Position Monitors will equip SOLEIL II storage ring. To ensure consistent signal levels across varying pipe diameters, two button sizes were selected: 6 mm diameter buttons for 16 mm beam pipes, and 7 mm diameter buttons for the 20 mm and 24 mm sections. Electromagnetic and thermal simulations have been conducted to validate the proposed designs. In parallel,...
Reflective and reflectionless RF filters play important but different roles in radio frequency systems. Reflective filters, traditionally designed using lumped or distributed elements, reject out-of-band signals by reflecting them back towards the source, potentially causing standing waves and impedance mismatch. In contrast, reflectionless filters absorb out-of-band energy internally,...
