Title :
Analog front-end electronics for beam position measurement on the beam halo measurement
Author :
Shurter, R.B. ; Cote, T. ; Gilpatrick, J.D.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
Enhancements have been made to the log-ratio analog front-end electronics based on the Analog Devices 8307 logarithmic amplifier as used on the LEDA accelerator. The dynamic range of greater than 85 dB, has been extended to nearly the full capability of the AD8307 from the previous design of approximately 65 dB through the addition of a 350 MHz band-pass filter, careful use of ground and power plane placement, signal routing, and power supply bypassing. Additionally, selection of high-isolation RF switches (55dB) has been an integral part of a new calibration technique, which is fully described in another paper submitted to this conference. Provision has also been made for insertion of a first-stage low-noise amplifier for using the circuit under low-signal conditions
Keywords :
analogue processing circuits; band-pass filters; calibration; linear accelerators; nuclear electronics; particle beam diagnostics; proton accelerators; 350 MHz; 55 dB; Analog Devices 8307 logarithmic amplifier; LEDA accelerator; band-pass filter; beam halo measurement; beam position measurement; calibration technique; first-stage low-noise amplifier; log-ratio analog front-end electronics; low-signal conditions; power supply bypassing; Band pass filters; Calibration; Dynamic range; Electron accelerators; Position measurement; Power supplies; Radio frequency; Routing; Signal design; Switches;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986686
