Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's

Thumbnail image of item number 1 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 2 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 3 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 4 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Showing 1-4 of 7 pages in this article.

PDF Version Also Available for Download.

Description

Two different systems for noise cancellation (first order gradiometers) have been developed using two similar high temperature superconducting (HTS) SQUIDs. ''Analog'' gradiometry is accomplished in hardware by either (1) subtracting the signals from the sensor and background SQUIDs at a summing amplifier (parallel technique) or (2) converting the inverted background SQUID signal to a magnetic field at the sensor SQUID (series technique). Balance levels achieved are 2000 and 1000 at 20 Hz for the parallel and series methods respectively. The balance level as a function of frequency is also presented. The effect which time delays in the two sets of ... continued below

Physical Description

Medium: P; Size: vp.

Creation Information

Espy, M.A.; Flynn, E.R.; Kraus, R.H., Jr. & Matlachov, A. September 15, 1998.

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.

Authors

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

Two different systems for noise cancellation (first order gradiometers) have been developed using two similar high temperature superconducting (HTS) SQUIDs. ''Analog'' gradiometry is accomplished in hardware by either (1) subtracting the signals from the sensor and background SQUIDs at a summing amplifier (parallel technique) or (2) converting the inverted background SQUID signal to a magnetic field at the sensor SQUID (series technique). Balance levels achieved are 2000 and 1000 at 20 Hz for the parallel and series methods respectively. The balance level as a function of frequency is also presented. The effect which time delays in the two sets of SQUID electronics have on this balance level is presented and discussed.

Physical Description

Medium: P; Size: vp.

Notes

OSTI as DE00761446

Source

  • Applied Superconductivity, Palm Desert, CA (US), 09/13/1998--09/18/1998

Language

Item Type

Identifier

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

  • Report No.: LA-UR-98-3910
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 761446
  • Archival Resource Key: ark:/67531/metadc725569

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

  • September 15, 1998

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

Description Last Updated

  • May 6, 2016, 2:08 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 2
More Statistics

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 2 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 3 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.
Thumbnail image of item number 4 in: 'Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Espy, M.A.; Flynn, E.R.; Kraus, R.H., Jr. & Matlachov, A. Two Methods for a First Order Hardware Gradiometer Using Two HTS SQUID's, article, September 15, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc725569/: accessed April 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.