The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors

Thumbnail image of item number 1 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 2 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 3 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 4 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Showing 1-4 of 6 pages in this article.

PDF Version Also Available for Download.

Description

For NSLSII closed orbit feedback system, in order to limit the noise caused by digital step changes of the power supplies in the feedback system, the angular kick corresponding to the last bit of the power supplies for the fast correctors must be smaller than 3 nrad [1]. On the other hand, to carry out closed orbit alignment or orbit correction after a long term drift, they need strong correctors with 0.8 mrad kick strength. In order to avoid the requirement of correctors with both large strength and very small minimum step size, they consider separate sets of slow correctors ... continued below

Creation Information

Yu,L.H. June 23, 2008.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

For NSLSII closed orbit feedback system, in order to limit the noise caused by digital step changes of the power supplies in the feedback system, the angular kick corresponding to the last bit of the power supplies for the fast correctors must be smaller than 3 nrad [1]. On the other hand, to carry out closed orbit alignment or orbit correction after a long term drift, they need strong correctors with 0.8 mrad kick strength. In order to avoid the requirement of correctors with both large strength and very small minimum step size, they consider separate sets of slow correctors with large strength and fast correctors with smaller maximum strength. In order to avoid fast and slow feedback systems working in parallel, and avoid the possible interaction between two feedback systems, they consider the possibility of using only one fast feedback system with slow correctors periodically removing the DC components of the fast correctors so that the DC components in fast feedback system do not accumulate to reach saturation even after a large long term drift of the closed orbit motion. They report on simulation of the performance of such a combined system for NSLSII in this paper.

Source

  • 11th European Particle Accelerator Conference (EPAC 2008); Genoa, Italy; 20080623 through 20080627

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: BNL--81640-2008-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 939963
  • Archival Resource Key: ark:/67531/metadc902103

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this article?

Digital Files

When

Dates and time periods associated with this article.

Creation Date

  • June 23, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

Description Last Updated

  • Nov. 1, 2016, 5 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 1
More Statistics

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 2 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 3 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.
Thumbnail image of item number 4 in: 'The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Yu,L.H. The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors, article, June 23, 2008; United States. (digital.library.unt.edu/ark:/67531/metadc902103/: accessed April 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.