Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure

Thumbnail image of item number 1 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 2 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 3 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 4 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.

PDF Version Also Available for Download.

Description

In the Next Linear Collider (NLC) design, X-Band (11.4 GHz) accelerator structures are used to accelerate multibunch beams to several hundred GeV. Although these structures allow for high gradient operation, their strong deflecting modes impose a number of operational constraints. In particular, the long-range transverse wakefields generated by the bunches need to be reduced by about two orders of magnitude to prevent significant beam breakup. During the past five years, a reduction scheme that employs both detuning and damping of the structure dipole modes has been developed to meet this requirement. Several prototype Damped and Detuned Structures (DDS) have been ... continued below

Physical Description

vp.

Creation Information

Adolphsen, Chris September 14, 1999.

Context

This report 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 report can be viewed below.

Who

People and organizations associated with either the creation of this report 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 report. Follow the links below to find similar items on the Digital Library.

Description

In the Next Linear Collider (NLC) design, X-Band (11.4 GHz) accelerator structures are used to accelerate multibunch beams to several hundred GeV. Although these structures allow for high gradient operation, their strong deflecting modes impose a number of operational constraints. In particular, the long-range transverse wakefields generated by the bunches need to be reduced by about two orders of magnitude to prevent significant beam breakup. During the past five years, a reduction scheme that employs both detuning and damping of the structure dipole modes has been developed to meet this requirement. Several prototype Damped and Detuned Structures (DDS) have been built to test and refine this scheme. The wakefield of the latest version, DDS3, has recently been measured in the Accelerator Structure Setup (ASSET) facility at SLAC. In this paper, we present these results together with predictions based on an equivalent circuit model of the structure. We also present ASSET studies in which the beam-induced dipole signals that are coupled out for damping purposes are used to center the beam in the structure.

Physical Description

vp.

Source

  • Other Information: PBD: 14 Sep 1999

Language

Item Type

Identifier

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

  • Report No.: SLAC-PUB-8174
  • Grant Number: AC03-76SF00515
  • DOI: 10.2172/12471 | External Link
  • Office of Scientific & Technical Information Report Number: 12471
  • Archival Resource Key: ark:/67531/metadc624169

Collections

This report 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 report?

Digital Files

When

Dates and time periods associated with this report.

Creation Date

  • September 14, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • Feb. 2, 2016, 6:12 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 4
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 2 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 3 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.
Thumbnail image of item number 4 in: 'Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Adolphsen, Chris. Wakefield and Beam Centering Measurements of a Damped and Detuned X-Band Accelerator Structure, report, September 14, 1999; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc624169/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.