{"id":5463,"date":"2026-08-07T06:55:36","date_gmt":"2026-08-06T21:55:36","guid":{"rendered":"https:\/\/www.aem.imr.tohoku.ac.jp\/?p=5463"},"modified":"2026-08-07T06:55:36","modified_gmt":"2026-08-06T21:55:36","slug":"jem-2100plus-%e9%9b%bb%e5%ad%90%e7%b7%9a%e7%99%ba%e7%94%9f%e3%83%bb%e5%81%9c%e6%ad%a2%ef%bc%88%e5%9f%ba%e7%a4%8e%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.aem.imr.tohoku.ac.jp\/en\/jem-2100plus-%e9%9b%bb%e5%ad%90%e7%b7%9a%e7%99%ba%e7%94%9f%e3%83%bb%e5%81%9c%e6%ad%a2%ef%bc%88%e5%9f%ba%e7%a4%8e%ef%bc%89\/","title":{"rendered":"JEM-2100plus: Electron Beam Generation and Stopping (Fundamentals)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Note: This page was translated by AI from the Japanese original. In case of any discrepancy, the Japanese version shall prevail.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Original post date (Japanese version): June 22, 2024<\/em><\/p>\n\n\n\n<p class=\"has-background wp-block-paragraph\">&#x1f4a1; This page is a quick manual for the JEM-2100plus.\nThe contents are subject to change.\nPlease receive training in advance before actually using the equipment.<\/p>\n\n\n<h3 class=\"wp-block-heading\">Electron Beam Generation<\/h3>\n\n\n<ol class=\"wp-block-list\">\n<li>Preliminary Check\n<ol class=\"wp-block-list\">\n<li>Accelerating voltage \/ Step-up (if necessary) (Reference) Accelerating voltage setting<\/li>\n\n\n<li>Dark current check\n<p class=\"has-background wp-block-paragraph\">&#x1f4a1; (Dark current) Beam Current is 100\u00b13 (200kV)<\/p>\n<\/li>\n\n\n<li>Holder insertion (Reference) Specimen setting<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>[TEM Center: Upper menu] View \u2192 Valve\/Vacuum Monitor\n<ul class=\"wp-block-list\">\n<li>Display Valve\/Vacuum Monitor<\/li>\n\n\n<li><span><strong>Check the vacuum level<\/strong><\/span>\n<ol class=\"wp-block-list\">\n<li>Penning Gauge 20 or less<\/li>\n\n\n<li>SIP 10^-5Pa range<\/li>\n<\/ol>\n\n\n<p class=\"has-background wp-block-paragraph\">&#x1f4a1; Do not generate an electron beam if the vacuum is poor\nThe filament life may be shortened.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[TEM Center: Upper menu] Control \u2192 Beam\n<ul class=\"wp-block-list\">\n<li>Display Beam Controller (for JEM Administrators)\n<p class=\"has-background wp-block-paragraph\">&#x1f4a1; If the Filament:[ON] button is grayed out, contact the administrator.<\/p>\n<\/li>\n\n\n<li><span><strong>Electron beam generation<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Electron beam confirmation\n<ol class=\"wp-block-list\">\n<li>Confirm that the electron beam is displayed on the screen.\n<ul class=\"wp-block-list\">\n<li>If the electron beam is not displayed<\/li>\n<\/ul>\n\n\n<p class=\"has-background wp-block-paragraph\">&#x1f4a1; If the electron beam is not displayed even after doing the above, contact the administrator\n(Perform beam centering and alignment)<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n<h3 class=\"wp-block-heading\">Electron Beam Stopping<\/h3>\n\n\n<ol class=\"wp-block-list\">\n<li>[TEM Center: Upper menu] Control \u2192 Beam\n<ul class=\"wp-block-list\">\n<li>Display Beam Controller (for JEM Administrators)<\/li>\n\n\n<li><span><strong>Electron beam stopping<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Holder removal (if necessary)<\/li>\n\n\n\n<li>Accelerating voltage \/ Standby (if necessary)\n<ol class=\"wp-block-list\">\n<li>Set to standby voltage (160kV) with Beam Controller \/ HT Voltage.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><em>*This post was created by an AI agent.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Note: This page was translated by AI from the Japanese original. In case of any discrepancy, the Japanese version shall prevail. Original post date (Japanese version): June 22, 2024 &#x1f4a1; This page is a quick manual for the JEM-2100plus. The contents are subject to change. Please receive training in advance before actually using the equipment. <a href=\"https:\/\/www.aem.imr.tohoku.ac.jp\/en\/jem-2100plus-%e9%9b%bb%e5%ad%90%e7%b7%9a%e7%99%ba%e7%94%9f%e3%83%bb%e5%81%9c%e6%ad%a2%ef%bc%88%e5%9f%ba%e7%a4%8e%ef%bc%89\/\" class=\"more-link\">&#8230;<span class=\"screen-reader-text\">  JEM-2100plus: Electron Beam Generation and Stopping (Fundamentals)<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_locale":"en_US","_original_post":"https:\/\/www.aem.imr.tohoku.ac.jp\/?p=3198","footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-5463","post","type-post","status-publish","format-standard","hentry","category-uncategorized","en-US"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts\/5463","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/comments?post=5463"}],"version-history":[{"count":4,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts\/5463\/revisions"}],"predecessor-version":[{"id":5764,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts\/5463\/revisions\/5764"}],"wp:attachment":[{"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/media?parent=5463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/categories?post=5463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/tags?post=5463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}