Fermilab Low Energy Linac Low Level RF Upgrade Engineering Notes and Operational Guide

Document #:

Beams-doc-3428-v1

Document type:

Manual

Submitted by:

Edward W. Cullerton

Updated by:

Edward W. Cullerton

Document Created:

23 Jul 2009, 16:19

Contents Revised:

23 Jul 2009, 16:19

Metadata Revised:

13 Aug 2009, 09:25

Abstract:

An upgrade to the low energy 201.25 MHz Linac at Fermilab is described in this paper. The upgrade to the low energy Linac system has been implemented to improve cavity vector regulation and reduce beam losses. The upgrade includes an adaptive feed forward system for beam loading compensation, a digital phase feedback system for the RF, a digital phase comparator for cavity tuning, and a low level RF system that is digitally controlled and referenced to a very stable 805 MHz reference line.

Files in Document:

• LEL LLRF Eng Binder.pdf (27.4 MB)

Topics:

• Linac:LLRF
• Technology:LLRF

Authors:

• Edward W. Cullerton
• Brian E. Chase
• Vitali S Tupikov
• Paul W. Joireman
• Philip Varghese
• Trevor A Butler

Keywords:

LINAC LLRF DSP RF Upgrade Feedforward FPGA

Notes and Changes:

This is a draft version.