{"id":5448,"date":"2026-08-07T06:55:35","date_gmt":"2026-08-06T21:55:35","guid":{"rendered":"https:\/\/www.aem.imr.tohoku.ac.jp\/?p=5448"},"modified":"2026-08-07T06:55:35","modified_gmt":"2026-08-06T21:55:35","slug":"jem-2100plus%ef%bc%9a%e3%83%93%e3%83%bc%e3%83%a0%e8%a1%a8%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/www.aem.imr.tohoku.ac.jp\/en\/jem-2100plus%ef%bc%9a%e3%83%93%e3%83%bc%e3%83%a0%e8%a1%a8%e7%a4%ba\/","title":{"rendered":"JEM-2100plus: Electron Beam Display"},"content":{"rendered":"\n

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

Original post date (Japanese version): June 22, 2024<\/em><\/p>\n\n\n\n

💡 Display the beam on the screen. If it is not displayed, remove the cause.<\/p>\n\n\n

    \n
  1. Prerequisite\n
      \n
    1. Routine adjustments have been made by the administrator.<\/li>\n<\/ol>\n<\/li>\n\n\n\n
    2. Preliminary check\n
        \n
      1. The specimen holder is set<\/li>\n\n\n
      2. Accelerating voltage (usually 200kV) is applied.<\/li>\n<\/ol>\n<\/li>\n\n\n\n
      3. Electron beam generation (Reference) JEM-2100plus Electron Beam Generation\/Stopping (Basics)\n
          \n
        1. Check the vacuum level<\/strong><\/span>\n
            \n
          • SIP 10^-5Pa range<\/li>\n<\/ul>\n<\/li>\n\n\n
          • Electron beam generation<\/strong><\/span>\n
              \n
            • Beam Current About 103~107uA<\/li>\n\n\n
            • If Beam Current is small, BIAS adjustment is required (contact the administrator)<\/li>\n\n\n
            • If Beam Current does not change, there is a possibility of filament breakage (contact the administrator)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n\n\n\n
            • Change to Image Mode\n
                \n
              1. [PANEL-L : Function : MAG1(MAG2)]<\/li>\n<\/ol>\n<\/li>\n\n\n\n
              2. Confirm the beam on the screen\n
                  \n
                1. If the beam is displayed on the screen, it is OK (work completed)<\/strong><\/span><\/li>\n\n\n
                2. If the beam is not displayed on the screen\n
                    \n
                  1. Remove all apertures from the electron beam path\n
                      \n
                    • Possibility that an aperture is blocking the electron beam path<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n\n\n
                    • Lower the magnification\n
                        \n
                      • Possibility that the beam is reaching outside the field of view<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n\n\n
                      • Check the probe\n
                          \n
                        • Possibility that the beam is too dark<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n\n\n
                        • Move specimen\n
                            \n
                          • Possibility that the specimen is blocking the electron beam path<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n\n\n\n
                          • If the beam is not displayed on the screen even after performing all the above operations, alignment is required.\n
                              \n
                            1. Contact the administrator<\/li>\n\n\n
                            2. You may try loading an alignment file.\n
                                \n
                              1. Be sure to load the latest version<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n

                                *This post was created by an AI agent.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

                                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 💡 Display the beam on the screen. If it is not displayed, remove the cause. *This post was created by an AI agent.<\/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=3204","footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-5448","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\/5448","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=5448"}],"version-history":[{"count":4,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts\/5448\/revisions"}],"predecessor-version":[{"id":5758,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/posts\/5448\/revisions\/5758"}],"wp:attachment":[{"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/media?parent=5448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/categories?post=5448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aem.imr.tohoku.ac.jp\/wp-json\/wp\/v2\/tags?post=5448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}