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"
HELMHOLTZ SUPERCONDUCTING RECEIVERS FOR MAGNETIC RESONANCE MICROSCOPY
"
Document Type
:
Latin Dissertation
Language of Document
:
English
Record Number
:
151523
Doc. No
:
ET23315
Main Entry
:
Sarah Hurlston
Title Proper
:
HELMHOLTZ SUPERCONDUCTING RECEIVERS FOR MAGNETIC RESONANCE MICROSCOPY
Note
:
This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract
:
The use of coupled high temperature superconductor (HTS) coil arrays in construc-tion of low noise volume imaging probes for magnetic resonance is investigated. Twoprobes designed to image different sample volumes were developed in collaborationwith Conductus Inc. The design objectives were (1) a robust vacuum system, (2)increased signal to noise performance over copper imaging probes, and (3) improvedmagnetic field homogeneity over single coil HTS probes. The probes were evaluatedusing imaging data acquired on a 9.4 T microscopic imaging system operated froma Bruker Omega CSI console and electrical data acquired on a network analyzer.Signal to noise comparison yielded a factor of seven improvement for the smallervolume probe when compared to a copper Helmholtz probe with an identical imag-ing volume. However, only a factor of two gain for the larger probe was attainedduring comparison to a copper solenoid, although the Q values for both the HTS....-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject
:
Electericl tess
:
برق
electronic file name
:
TL46553.pdf
Title and statement of responsibility and
:
HELMHOLTZ SUPERCONDUCTING RECEIVERS FOR MAGNETIC RESONANCE MICROSCOPY [Thesis]
http://localhost/site/catalogue/151523
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TL46553.pdf
TL46553.pdf
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