DocumentCode :
1463197
Title :
High-Power High-Efficiency L-band Multiple-Beam Klystron Development at CPI
Author :
Habermann, Thomas ; Balkcum, Adam ; Begum, Rasheda ; Bohlen, Heinz ; Cattelino, Mark ; Eisen, Edward ; Gajaria, Deepika ; Staprans, Armand ; Stockwell, Brad ; Zitelli, Lou
Author_Institution :
Commun. & Power Ind., Inc., Palo Alto, CA, USA
Volume :
38
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
1264
Lastpage :
1269
Abstract :
Communications and Power Industries, Inc., has designed and manufactured two versions of a 10-MW-peak high-efficiency multiple-beam klystron (MBK) operating at 1300 MHz. This type of klystron is favored for large particle accelerator projects such as the European X-ray Free-Electron Laser at the Deutsches Elektronen Synchrotron (DESY). Two klystrons have been made for DESY. The first-generation MBK was a vertically oriented prototype using a six-cavity design with higher order mode input and output cavities and conventional intermediate cavities. For cost and performance reasons, the second-generation MBK, designated VKL-8301B, utilized seven coaxial fundamental-mode cavities and is an “industrialized” horizontally oriented klystron. The klystron was designed and optimized using state-of-the-art multidimensional design codes to ensure that all performance requirements are exceeded. Agreement between the simulated and measured performances is good. The VKL-8301B prototype achieved a peak saturated RF output power of 10.4 MW and 67.8% efficiency. The data were measured at the full 1.5% duty and with 1.5-ms pulse width. The klystron satisfied all required operating conditions, including stable operation into an output mismatch of 1.2:1 voltage standing wave ratio at various phases. The prototype has been shipped to DESY and has been successfully tested by a customer.
Keywords :
klystrons; Deutsches Elektronen Synchrotron; European X-ray Free-Electron Laser; VKL-8301B; coaxial fundamental-mode cavities; efficiency 67.8 percent; frequency 1300 MHz; high-power high-efficiency L-band multiple-beam klystron development; industrialized horizontally oriented klystron; multidimensional design codes; power 10 MW; power 10.4 MW; six-cavity design; time 1.5 ms; Electron linear accelerators; klystrons; microwave power amplifiers; microwave tubes;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2010.2042972
Filename :
5443590
Link To Document :
بازگشت