Pulsed network analysis with random signal for RF feedback optimization

Author

Balleyguier, Pascal

Author_Institution

Service de Phys. et Tech. Nucl., Commissariat a l´´Energie Atomique, Bruyeres-le-Chatel, France

Volume

43

Issue

4

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

2337

Lastpage

2342

Abstract

A system for differential transfer function measurement of a pulsed radio-frequency (RF) device has been developed. A small test signal defined in the frequency domain as a constant magnitude and a random phase signal is added to the normal pulsed signal. With this system, an RF chain can be precisely characterized before closing the loop. Then, one can optimize the compromise between open loop gain and stability margin. This has been done with the 433-MHz klystron of the ELSA accelerator. The RF loop has been nested inside an adaptive feedforward system, When both systems run, the stability is 0.05%

Keywords

accelerator RF systems; accelerator cavities; circuit feedback; circuit optimisation; driver circuits; feedforward; klystrons; network analysis; pulse circuits; 433 MHz; ELSA accelerator; RF chain; RF feedback optimization; RF loop; adaptive feedforward system; differential transfer function measurement; frequency domain; klystron; pulsed network analysis; pulsed radiofrequency device; random phase signal; random signal; test signal; Feedback; Frequency domain analysis; Klystrons; Pulse measurements; RF signals; Radio frequency; Signal analysis; Stability; Testing; Transfer functions;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.531781

Filename

531781