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Title: Fermi Timing and Synchronization System

Abstract

The Fermi FEL will depend critically on precise timing of its RF, laser and diagnostic subsystems. The timing subsystem to coordinate these functions will need to reliably maintain sub-100fs synchronicity between distant points up to 300m apart in the Fermi facility. The technology to do this is not commercially available, and has not been experimentally demonstrated in a working facility. Therefore, new technology must be developed to meet these needs. Two approaches have been researched by different groups working with the Fermi staff. At MIT, a pulse transmission scheme has been developed for synchronization of RF and laser devices. And at LBL, a CW transmission scheme has been developed for RF and laser synchronization. These respective schemes have advantages and disadvantages that will become better understood in coming years. This document presents the work done by both teams, and suggests a possible system design which integrates them both. The integrated system design provides an example of how choices can be made between the different approaches without significantly changing the basic infrastructure of the system. Overall system issues common to any synchronization scheme are also discussed.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science
OSTI Identifier:
900945
Report Number(s):
LBNL-61165; CBP Note - 743
R&D Project: Z3FRM1; BnR: 600301020; TRN: US0702426
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43; DESIGN; LASERS; LAWRENCE BERKELEY LABORATORY; SYNCHRONIZATION

Citation Formats

Wilcox, R, Staples, J, Doolittle, L, Byrd, J, Ratti, A, Kaertner, F X, Kim, J, Chen, J, Ilday, F O, Ludwig, F, Winter, A, Ferianis, M, Danailov, M, and D'Auria, G. Fermi Timing and Synchronization System. United States: N. p., 2006. Web. doi:10.2172/900945.
Wilcox, R, Staples, J, Doolittle, L, Byrd, J, Ratti, A, Kaertner, F X, Kim, J, Chen, J, Ilday, F O, Ludwig, F, Winter, A, Ferianis, M, Danailov, M, & D'Auria, G. Fermi Timing and Synchronization System. United States. https://doi.org/10.2172/900945
Wilcox, R, Staples, J, Doolittle, L, Byrd, J, Ratti, A, Kaertner, F X, Kim, J, Chen, J, Ilday, F O, Ludwig, F, Winter, A, Ferianis, M, Danailov, M, and D'Auria, G. 2006. "Fermi Timing and Synchronization System". United States. https://doi.org/10.2172/900945. https://www.osti.gov/servlets/purl/900945.
@article{osti_900945,
title = {Fermi Timing and Synchronization System},
author = {Wilcox, R and Staples, J and Doolittle, L and Byrd, J and Ratti, A and Kaertner, F X and Kim, J and Chen, J and Ilday, F O and Ludwig, F and Winter, A and Ferianis, M and Danailov, M and D'Auria, G},
abstractNote = {The Fermi FEL will depend critically on precise timing of its RF, laser and diagnostic subsystems. The timing subsystem to coordinate these functions will need to reliably maintain sub-100fs synchronicity between distant points up to 300m apart in the Fermi facility. The technology to do this is not commercially available, and has not been experimentally demonstrated in a working facility. Therefore, new technology must be developed to meet these needs. Two approaches have been researched by different groups working with the Fermi staff. At MIT, a pulse transmission scheme has been developed for synchronization of RF and laser devices. And at LBL, a CW transmission scheme has been developed for RF and laser synchronization. These respective schemes have advantages and disadvantages that will become better understood in coming years. This document presents the work done by both teams, and suggests a possible system design which integrates them both. The integrated system design provides an example of how choices can be made between the different approaches without significantly changing the basic infrastructure of the system. Overall system issues common to any synchronization scheme are also discussed.},
doi = {10.2172/900945},
url = {https://www.osti.gov/biblio/900945}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 19 00:00:00 EDT 2006},
month = {Wed Jul 19 00:00:00 EDT 2006}
}