ACBI addresses issues of tuning and control in the LCLS for achieving and preserving the desired beam parameters and stability. Beam instrumentation and diagnostics throughout the machine are covered. These include standard diagnostics for beam position, size, energy, energy spread etc. as well as specialized devices to measure the unique short time pulse structure and timing of the bunches. The accelerator control system sets and reads back the parameters of the accelerator hardware devices such as RF and magnets, and monitors that they remain within specified tolerances. The control system is coupled to the RF system to provide timing signals to meet the unique stability requirements of the LCLS pulses. This page contains links to documentation, where specifications will be kept for devices and systems, meeting notes and links to other LCLS pages. The documentation on this page will grow and be updated frequently so as to become a comprehensive repository for all controls and instrumentation information for the LCLS.
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General
Summary table of diagnostic devices, last updated 9/26/03
Description of Operating Modes for running beams in LCLS
Diagnostics overview for the Undulator Commissioning, presented at the UCLA Workshop January 19-20, 2004
Diagnostics and Controls Summary, presented at the Linac Technical Review December 12, 2003.
PPS
Definition of the PPS Zones for the LCLS
Timing
LCLS Timing Requirements - Physics Requirements Document
PowerPoint slides from meeting September 16, 2003
Diagnostics
Beam Position Monitors
LCLS BPM Requirements - PowerPoint slides from Ron Johnson November 2001
table of BPM specifications and locations, bpm.xls
Beam Profile Monitors
Description of the design considerations for LCLS profile monitors
table of profile monitor specifications and locations, prof.xls
Wire scanners
table of wire scanner specifications and locations, wire.xls
Bunch length Monitors
Overview of different types of bunch length monitors, bunch length monitors summary
table of bunch length monitor specifications and locations, blmo.xls
Beam Collimators
table of collimator specifications and locations, collimator.xls
Beam Stoppers
table of beam stopper specifications and locations, stoppers.xls
Beam Toroids
table of beam current toroid specifications and locations, toro.xls
Phasing
Description of the laser-electron bunch phase monitor
Fast feedback systems
Feedback requirements for the accelerator and transport lines
feedback corrector requirements for orbit feedback systems
Commissioning Procedures
Control Room
Control room requirements for the LCLS, October 2003.
PowerPoint slides from meeting on LCLS control room requirements, October 8, 2003.
MPS
Undulator MPS Logic Summary
Controls Integration
Distributed control system requirements description
Controls Software
Requirements for High-Level Applications Packages
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