Title :
Validation of a narrowband signal processing system for beam position monitoring purposes in linear accelerators
Author :
Ruf, Marcel ; Trummer, Stefan ; Schmidt, Lorenz-Peter ; Setzer, Stefan
Author_Institution :
Dept. of Microwave Eng. & High Freq. Technol., Univ. of Erlangen-Nuremberg, Nuremberg, Germany
Abstract :
A new RF frontend for a beam position monitoring system for electron linear accelerators (Linacs) is discussed. The frontend applies a waveguide based input filter section for processing the pulse train, generated by non-interceptive pickups and selection of the desired beam harmonic. Due to increased accuracy, narrowband signal processing was chosen for further signal treatment. Therefore, a two-channel downconverter was designed incorporating two single-balanced diode mixer stages optimized for processing frequencies around 6 GHz, the second beam harmonic in S-Band Linacs. Device characteristics and component validation in a demonstrator with electro-magnetic excitation, simulating beam-induced fields are presented.
Keywords :
accelerator RF systems; beam handling techniques; electron accelerators; linear accelerators; particle beam diagnostics; signal processing; RF frontend; S-Band Linacs; beam harmonic selection; beam position monitoring; beam-induced fields; electromagnetic excitation; electron linear accelerators; narrowband signal processing system; noninterceptive pickups; pulse train processing; single-balanced diode mixer; two-channel downconverter; waveguide based input filter section; Diodes; Electron beams; Linear accelerators; Monitoring; Narrowband; Particle beams; Power harmonic filters; Pulse generation; Radio frequency; Signal processing;
Conference_Titel :
Microwave Conference, 2010 German
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4933-0
Electronic_ISBN :
978-3-9812668-1-8
