{"id":1845,"date":"2014-05-01T09:00:07","date_gmt":"2014-05-01T09:00:07","guid":{"rendered":"http:\/\/casgroups.case.edu\/physics-senior-projects\/?p=1845"},"modified":"2017-01-26T22:39:13","modified_gmt":"2017-01-26T22:39:13","slug":"persistent-switch-design-for-mgb2-superconducting-magnet","status":"publish","type":"post","link":"https:\/\/casgroups.case.edu\/physics-senior-projects\/persistent-switch-design-for-mgb2-superconducting-magnet\/","title":{"rendered":"Persistent Switch Design for MgB2 Superconducting Magnet"},"content":{"rendered":"<h3 class=\"p4\" style=\"text-align: center\">Jeffrey Oleski with Michael Martens and David Doll<\/h3>\n<h3 class=\"p5\" style=\"text-align: center\"><i>Persistent Switch Design for MgB2 Superconducting Magnet<\/i><\/h3>\n<div class=\"panel panel-default\">\n\t\t\t\t<div class=\"panel-heading\">\n\t\t\t\t\t<h4 class=\"panel-title\">\n\t\t\t\t\t\t<a class=\"collapsed\" data-toggle=\"collapse\" data-parent=\"#single-collapse\" href=\"#single-collapse-0\">\u201dPoster\u201d<\/a>\n\t\t\t\t\t<\/h4>\n\t\t\t\t<\/div>\n\t\t\t\t<div id=\"single-collapse-0\" class=\"panel-collapse collapse\">\n\t\t\t\t\t<div class=\"panel-body\">\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2119\" src=\"https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll.jpg\" alt=\"Formatted for 36x56\" width=\"2400\" height=\"1543\" srcset=\"https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll.jpg 2400w, https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll-300x193.jpg 300w, https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll-768x494.jpg 768w, https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll-1024x658.jpg 1024w, https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022451\/Oleski_Martens_Doll-500x321.jpg 500w\" sizes=\"(max-width: 2400px) 100vw, 2400px\" \/><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n<p class=\"p6\">High quality MRI imaging requires that the main magnetic field remain temporally stable to within 0.1 ppm per hour, which is achieved by operating the main superconducting magnet in persistent current mode. After a power supply ramps the magnets to full current, persistent switches are used to isolate the power supply and operate the magnet in persistent current mode. Persistent switch designs exist for the NiTi magnets used in present-day MRI scanners, but we propose to design a persistent switch for use in conduction-cooled MgB2 superconductor MRI magnets.<span class=\"Apple-converted-space\">\u00a0 <\/span>Design considerations include: constraints on the resistance of the switch in the normal and superconducting state; strain sensitivity of the MgB2; conduction cooling of the switch; heater elements to change the temperature of the switch; and connections with persistent joints.<\/p>\n<p class=\"p6\" style=\"text-align: center\"><a href=\"https:\/\/artscimedia.case.edu\/wp-content\/uploads\/sites\/176\/2014\/05\/15022517\/Oleski_Martens_Doll.pdf\">Paper<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jeffrey Oleski with Michael Martens and David Doll<br \/>\n<i>Persistent Switch Design for MgB2 Superconducting Magnet<\/i><\/p>\n<p class=\"p6\">High quality MRI imaging requires that the main magnetic field remain temporally stable to within 0.1 ppm per hour, which is achieved by operating the main superconducting magnet in persistent current mode. After a power supply ramps the magnets to full current, persistent switches are used to isolate the power supply and operate the magnet in persistent current mode. Persistent switch designs exist for the NiTi magnets used in present-day MRI scanners, but we propose to design a persistent switch for use in conduction-cooled MgB2 superconductor MRI magnets.\u00a0<\/p>\n<p><a href=\"https:\/\/casgroups.case.edu\/physics-senior-projects\/persistent-switch-design-for-mgb2-superconducting-magnet\/\" class=\"more-link\">Continue reading&#8230; <span class=\"screen-reader-text\">Persistent Switch Design for MgB2 Superconducting Magnet<\/span><\/a><\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[44,1,39,5,10,27,56],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/1845"}],"collection":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/comments?post=1845"}],"version-history":[{"count":6,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/1845\/revisions"}],"predecessor-version":[{"id":3045,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/1845\/revisions\/3045"}],"wp:attachment":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/media?parent=1845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/categories?post=1845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/tags?post=1845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}