{"id":9336,"date":"2022-02-24T13:38:00","date_gmt":"2022-02-24T11:38:00","guid":{"rendered":"https:\/\/lncmi.cnrs.fr\/?p=9336"},"modified":"2025-07-07T11:11:53","modified_gmt":"2025-07-07T09:11:53","slug":"beyond-100-tesla","status":"publish","type":"post","link":"https:\/\/lncmi.cnrs.fr\/en\/news\/beyond-100-tesla\/","title":{"rendered":"Beyond 100 Tesla \u2026"},"content":{"rendered":"\n<p>Magnetic fields in excess of 100 T can only be generated at the expense of a drastic reduction in pulse duration.<br>Invariably, they also lead to the destruction of the coil which, however, doesn\u2019t prevent the use of Megagauss<br>magnetic fields (1 Megagauss = 100 Tesla) for scientific experiments.<\/p>\n\n\n\n<p>The LNCMI Megagauss generator is one out of three platforms worldwide that are making use of capacitor-driven<br>single-turn coils (STC) to produce fields in the 150 to 250 T range for scientific applications. Although still<br>higher fields can be obtained with flux compression techniques, STCs have the advantage that the coil destruction<br>does not affect the experimentally useful volume: Samples, cryostats and other equipment generally survive and<br>experiments can therefore be performed reproducibly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Magnetic forces and how to deal with them<\/h2>\n\n\n\n<p>Magnets are generating a force field that acts not only on magnetic objects in their vicinity, but also on<br>themselves: In a simple solenoid, for example, the so-called magnetic pressure tends to radially expand and<br>axially compress the windings. As a consequence, the maximum field that can be obtained in an electromagnet<br>without destroying it is limited by the mechanical strength of its components, that is, conductors and reinforcing<br>materials.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"688\" height=\"1080\" src=\"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2022\/02\/STC-principle-2.png\" alt=\"\" class=\"wp-image-23211\" style=\"width:469px;height:auto\" srcset=\"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2022\/02\/STC-principle-2.png 688w, https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2022\/02\/STC-principle-2-480x753.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 688px, 100vw\" \/><\/figure>\n\n\n\n<p>To reach a field of, say, 100 T, a magnet would have to sustain a pressure of 4 GPa, which corresponds to a weight<br>of 40 tons resting on a surface of 1 cm\u00b2. So far this pressure level has prevented any successful attempt to build<br>a magnet that can generate fields approaching 100 T without exploding. This does not mean, however, that fields<br>above this threshold cannot be generated at all. One just has to resort to so-called destructive techniques.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Magnetic fields in excess of 100 T can only be generated at the expense of a drastic reduction in pulse duration.Invariably, they also lead to the destruction of the coil [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23211,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[292],"tags":[],"post_folder":[],"class_list":["post-9336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"jetpack_featured_media_url":"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2022\/02\/STC-principle-2.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts\/9336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/comments?post=9336"}],"version-history":[{"count":0,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts\/9336\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/media\/23211"}],"wp:attachment":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/media?parent=9336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/categories?post=9336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/tags?post=9336"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/post_folder?post=9336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}