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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]
 
 
 
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