Title :
Bulk acoustic wave (BAW) devices for stochastic cooling notch filters
Author :
Pasquinelli, Ralph J.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
Work on replacing all existing notch filters in the PBAR source with BAW notch filters is described. Three filters have been designed and built for the debuncher, thus eliminating the fiber optic filters. These have been installed since the fall of 1990. New filters for replacing the superconducting filters in the accumulator are now under construction. The delay stability of the BAW device is on the order of 27 p.p.m. per degree centigrade for a sapphire crystal. Maintaining notch frequency spacing requires a constant temperature environment; hence, the entire unit is mounted in an oven.<>
Keywords :
acoustic filters; beam handling equipment; crystal filters; synchrotrons; BAW notch filters; PBAR source; accumulator; fiber optic filters; stochastic cooling notch filters; superconducting filters; Acoustic waves; Bulk acoustic wave devices; Cooling; Delay; Optical design; Optical fiber filters; Optical fibers; Stability; Stochastic processes; Superconducting filters;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164646
