Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe

Thumbnail image of item number 1 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 2 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 3 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 4 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Showing 1-4 of 8 pages in this report.

PDF Version Also Available for Download.

Description

This report presents the experimental results from the argon and argon-oxygen gas mixture glow discharge in the Main Ring beam pipe and is a follow-up to the proposal for vacuum improvements of the Main Ring magnets and straight sections and the warm Tevatron straight sections. Glow discharge was used in the experiment in order to clean the vacuum system instead of bakeout which could only be performed with great difficulty or not at all. It is a relatively simple and very effective method. The glow discharge occurs under specific gas pressures (10--120 mTorr) and current flows (10/sup /minus/5/ /minus/ 10/sup ... continued below

Physical Description

Pages: 9

Creation Information

Trbojevic, D. & Pastore, N. February 15, 1989.

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.

Authors

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

This report presents the experimental results from the argon and argon-oxygen gas mixture glow discharge in the Main Ring beam pipe and is a follow-up to the proposal for vacuum improvements of the Main Ring magnets and straight sections and the warm Tevatron straight sections. Glow discharge was used in the experiment in order to clean the vacuum system instead of bakeout which could only be performed with great difficulty or not at all. It is a relatively simple and very effective method. The glow discharge occurs under specific gas pressures (10--120 mTorr) and current flows (10/sup /minus/5/ /minus/ 10/sup /minus/1/ A) through gas excitation and formation of plasma conditions. Deexcitation of the gas molecules produces visible light. Several mechanisms have been proposed to explain the glow discharge cleaning process. Ions can sputter adsorbed molecules or atoms at the cathode surface and even produce lattice damage extending several monolayers below the surface. The glow discharge has already been extensively used for vacuum improvements in accelerators. 9 refs.

Physical Description

Pages: 9

Notes

NTIS, PC A02/MF A01 - OSTI; 1.

Source

  • Other Information: Portions of this document are illegible in microfiche products

Language

Item Type

Identifier

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

  • Other: DE89011491
  • Report No.: FNAL-TM-1566
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/6080884 | External Link
  • Office of Scientific & Technical Information Report Number: 6080884
  • Archival Resource Key: ark:/67531/metadc1104850

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

  • February 15, 1989

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • May 9, 2018, 3:08 p.m.

Usage Statistics

When was this report last used?

Congratulations! It looks like you are the first person to view this item online.
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 2 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 3 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.
Thumbnail image of item number 4 in: 'Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Trbojevic, D. & Pastore, N. Argon and argon-oxygen glow discharge cleaning of the Main Ring beam pipe, report, February 15, 1989; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1104850/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.