Observation of wakefields in a 17 Ghz metallic photonic bandgap (PBG) structure

• Published in: 2007 IEEE Particle Accelerator Conference (PAC) pp. 3002 - 3004
• Main Authors: Marsh, R.A., Shapiro, M.A., Temkin, R.J., Smirnova, E.I.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-06-2007
• Subjects: Acceleration; Damping; Frequency; Iris; Lattices; Life estimation; Optical coupling; Particle beams; Photonic band gap; Q factor
• ISBN: 1424409160; 9781424409167
• ISSN: 1944-4680; 2152-9582
• DOI: 10.1109/PAC.2007.4440648

Preliminary results are reported on experimental wakefield measurements made on a 6 cell, 17.14 GHz metallic photonic band gap (PBG) accelerator structure. Wakefields were observed using a variety of detectors and methods. The PBG structure is open, containing no outer wall, and radiation has been observed through a window in the surrounding vacuum vessel. The output coupler port has also been used with a vacuum window to observe radiation coupling out of the port. Estimations of radiation are made using HFSS and basic wakefield theory. Measurements have been made using video diode detectors and a heterodyne receiver. Plans are discussed for further experiments.