STI Publications - View Publication Form #15634

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Publication Information
Title CEBAF Photo Gun RF System
Abstract During the CEBAF 12 GeV Upgrade at Jefferson Lab, a fourth experimental hall, ?D?, was added to the existing three halls. To produce four beams and deliver them to all halls concurrently requires new frequencies and a new timing pattern of the electron bunches. Since a photo-gun is used to produce electron bunches, the gun?s drive laser pulses need to be synchronized with the required bunch rate frequencies of 499 MHz or 249.5 MHz. To meet these new operational requirements, the new LLRF system has been proposed. Very specific requirements (dual frequency operation) on one side and the simple RF drive mode operation on the other imply the use of a commercial off-the-shelf digital platform rather than a system typical for RF cavity field control. We have chosen the Texas Instruments FPGA board along with a high-speed 8-Channel, 14-Bit board, and a 4-Channel, 16-Bit board. The DAC board includes the clock generator for clocking ADCs, DACs and the FPGA. The only custom design section of
Author(s) Tomasz Plawski, Ramakrishna Bachimanchi, Manny Diaz, Scott Higgins, Curt Hovater, Clyde Mounts, David Seidman
Publication Date January 2019
Document Type Meeting, Proceedings
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Engineering Division / Electrical Systems / EES RF Systems
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-ACE-18-2840 OSTI Number: 1542088
LANL Number: Other Number: DOE/OR/23177-4565
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Meeting / Conference
Meeting Name LINAC2018
Meeting Date 9/16/2018
Document Subtype Paper (proceedings only)
Proceedings
Title Proceedings of LINAC 2018
Editor(s) Volker R.W. Schaa, Guoxi Pei, Yong Ho Chin, Shinian Fu, Ning Zhao
Publisher JACOW
Refereed No
Page Number 236
Year 2019
Attachments/Datasets/DOI Link
Document(s)
mopo115.pdf (STI Document)
mopo115.pdf (Accepted Manuscript)
DOI Link
Dataset(s) (none)
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