{"id":707,"date":"2013-07-22T12:52:13","date_gmt":"2013-07-22T19:52:13","guid":{"rendered":"http:\/\/www.rbdinstruments.com\/blog\/?p=707"},"modified":"2023-12-20T11:23:09","modified_gmt":"2023-12-20T19:23:09","slug":"10-155-filament-replacement-procedure","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/10-155-filament-replacement-procedure\/","title":{"rendered":"10-155 Filament replacement procedure"},"content":{"rendered":"

This blog post is an updated version of the 10-155 filament replacement procedure first published on the RBD Instruments website as a Technical Tip a number of years ago. This version has been updated with some close up pictures of the electron gun assembly shown at the bottom of this post.<\/p>\n

Use gloves, de-magnetize all tools and clean all tools with Isopropanol.<\/p>\n

    \n
  1. Set analyzer on stand or use manuals and support analyzer on handles, facing up.<\/li>\n
  2. Remove outer magnetic shield (4 screws)<\/li>\n
  3. Remove inner magnetic shield (4 screws)<\/li>\n
  4. Carefully remove conical ceramic<\/li>\n
  5. Loosen VM (outer cylinder) wire and lift inner cylinder off of base ceramic.<\/li>\n
  6. Remove 3 screws inside inner cylinder.<\/li>\n
  7. Carefully lift inner cylinder up and off of the electron gun assembly. Note: If the inner cylinder does not move freely, use a heat gun to expand the inner cylinder so that it will slide off. Do not force it!<\/li>\n
  8. Look at the 10-155 electron gun detail<\/a> PDF file to familiarize yourself with the electron gun assembly.<\/li>\n
  9. Remove the three long screws that hold the electron gun assembly together.<\/li>\n
  10. Remove the V1 emission screw<\/li>\n
  11. Remove the 2 filament couplers from the filament posts. You will need a .048 4 spline wrench.<\/li>\n
  12. Remove the 3 filament ceramics.<\/li>\n
  13. Remove the filament assembly. Note the orientation of the emission tab and filament posts.<\/li>\n
  14. Remove the 3 screws that hold the filament base on and remove the filament.<\/li>\n
  15. Install the new filament in the same orientation as the old filament into the emission cap.<\/li>\n
  16. Install the 3 screws and the filament base and tighten slightly.<\/li>\n
  17. Position the filament so that it is centered in the hole and tighten the 3 screws. This is best done using a microscope.<\/li>\n
  18. Install the filament assembly on top of the 3 filament ceramics and use the 3 long screws to hold the assembly together. The three long screws need to be tightened so that they all have the same distance with respect to the base.<\/li>\n
  19. Reconnect the V1 wire<\/li>\n
  20. Reconnect the filament couplers.<\/li>\n
  21. Ohm out the connections to the filament and V1.<\/li>\n
  22. Degauss the gun assembly.<\/li>\n
  23. Install the inner cylinder over the electron gun assembly.<\/li>\n
  24. Reinsert and tighten the three screws inside the inner cylinder.<\/li>\n
  25. Reinstall the outer cylinder and attach the VM wire.<\/li>\n
  26. Carefully install the conical ceramic. The resistor part should be 180 degrees out from the bottom flat ceramic. Ohm out VM to ground and make sure it has the correct resistance \u2013 typically that is about 3 Meg ohms from VM (the outer cylinder) to ground. You may need to shim the inner or outer cylinder with some silver or platinum foil, see the 10-155 shim<\/a> document for more information. Both the flat and conical termination ceramics need to make a good electrical connection in order for the CMA to properly focus the electrons into the analyzer aperture.<\/li>\n
  27. Install the inner magnetic shield<\/li>\n
  28. Degauss the analyzer.<\/li>\n
  29. Install the outer magnetic shield.<\/li>\n
  30. Degauss the analyzer. Installation complete!<\/li>\n<\/ol>\n

    RBD Instruments provides the C75-010 filament and electron multiplier used in the 10-155 CMA. Contact us for more information<\/a>.<\/p>\n

    This slideshow requires JavaScript.<\/p>

    <\/div>\n","protected":false},"excerpt":{"rendered":"

    This blog post is an updated version of the 10-155 filament replacement procedure first published on the RBD Instruments website as a Technical Tip a number of years ago. This version has been updated with some close up pictures of … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":709,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[164],"tags":[97,39,100,99,98],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/filament-coupler-space.jpg?fit=972%2C648&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2DEXo-bp","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1452,"url":"https:\/\/www.rbdinstruments.com\/blog\/15-255g-filament-change-procedure\/","url_meta":{"origin":707,"position":0},"title":"15-255G Filament Change Procedure","author":"Randy","date":"May 9, 2015","format":false,"excerpt":"This post explains how to replace the C75-010 tungsten filament used in the Physical Electronics 15-255G double pass CMA.\u00a0\u00a0\u00a0 Refer to the pictures below for more details.\u00a0 RBD Instruments provides the C75-010 filaments as well as any other parts that you may need for your 15-255G analyzer.\u00a0 We also offer\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"check-screw-distance","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2015\/05\/check-screw-distance.jpg?fit=486%2C324&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1521,"url":"https:\/\/www.rbdinstruments.com\/blog\/esca-analyzer-filament-procedure\/","url_meta":{"origin":707,"position":1},"title":"ESCA Analyzer Filament Procedure","author":"Randy","date":"June 19, 2015","format":false,"excerpt":"ESCA Analyzer Filament Replacement\u00a0 Procedure This procedure details the step by step process to replace the tungsten filament in a PHI 25-250, 260 or 270 ESCA analyzer used on the older PHI 550, 560 and 570 ESCA systems. RBD Instruments provides this filament (the C75-010). Here is a link to\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2025\/03\/Analyzer-resistances.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":300,"url":"https:\/\/www.rbdinstruments.com\/blog\/phi-optics-repair-guidelines-2\/","url_meta":{"origin":707,"position":2},"title":"PHI Optics Repair Guidelines","author":"Randy","date":"January 17, 2013","format":false,"excerpt":"This document contains information about optics repair methods, procedures and tricks that are useful when working on older PHI optics units such as cylindrical mirror analyzers, x-ray photoelectron spectrometers and sputter ion sources. General Optics Guidelines. Clean all tools with isopropanol or methanol and also degauss them if possible. Most\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/01\/10-155-electron-gun-detail.png?fit=619%2C568&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1349,"url":"https:\/\/www.rbdinstruments.com\/blog\/25-110-analyzer-filament\/","url_meta":{"origin":707,"position":3},"title":"25-110 Analyzer Filament","author":"Randy","date":"February 11, 2015","format":false,"excerpt":"This is an old tech tip that I wrote back in 2002. The 25-110 analyzer was the first CMA that Physical Electronics used a Lab6 filament in. These days there are not a lot of 590 systems still in operation, but the ones that are still work well especially as\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"Loosen-bottom-cap-set-screws","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2015\/02\/Loosen-bottom-cap-set-screws.jpg?fit=640%2C480&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":545,"url":"https:\/\/www.rbdinstruments.com\/blog\/scanning-auger-objective-coil-replacement-procedure\/","url_meta":{"origin":707,"position":4},"title":"Scanning Auger Objective Coil Replacement Procedure","author":"Randy","date":"May 7, 2013","format":false,"excerpt":"This post describes the steps needed to successfully replace the objective coil on PHI 600 and 660 systems. Note: Use gloves, clean tools and place UHV aluminum foil on your workspace. For best results, dust off the assemblies with dry nitrogen or canned air as you reassemble the analyzer to\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"Scribe the objective assembly","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/05\/Scribe-the-objective-assembly-so-that-the-nose-cap-may-be-realigned-during-reassembly.jpg?fit=656%2C492&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":677,"url":"https:\/\/www.rbdinstruments.com\/blog\/lab6-filament-replacement-procedure\/","url_meta":{"origin":707,"position":5},"title":"Lab6 filament replacement procedure","author":"Randy","date":"July 9, 2013","format":false,"excerpt":"This procedure shows the steps to replace the Lab6 filament in the 25-120A CMA used in the Physical Electronics 600 and 660 scanning auger systems. First, vent the system. Here is a link to a procedure on how to do that: 600_System_Up-to-air_Procedure Remove the filament cap on the top of\u2026","rel":"","context":"In "Operation and Calibration Procedures"","block_context":{"text":"Operation and Calibration Procedures","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/operation-and-calibration-procedures\/"},"img":{"alt_text":"tilt back filament housing","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/07\/tilt-filament-housing-back-on-hinge.jpg?fit=588%2C330&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/707"}],"collection":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/comments?post=707"}],"version-history":[{"count":1,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/707\/revisions"}],"predecessor-version":[{"id":3968,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/707\/revisions\/3968"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media\/709"}],"wp:attachment":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media?parent=707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/categories?post=707"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/tags?post=707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}