{"id":981,"date":"2014-02-10T02:59:02","date_gmt":"2014-02-10T10:59:02","guid":{"rendered":"http:\/\/www.rbdinstruments.com\/blog\/?p=981"},"modified":"2014-11-06T09:18:21","modified_gmt":"2014-11-06T17:18:21","slug":"torr-scientific-vacuum-window-used-on-alba","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/torr-scientific-vacuum-window-used-on-alba\/","title":{"rendered":"High Optical Quality Torr Scientific Vacuum Window used on ALBA"},"content":{"rendered":"<p>Located in Barcelona, ALBA is a Synchrotron Light Source producing radiation for experiments in many fields of science, www.cells.es. The quality of the radiation delivered to users depends on the quality of the electron beam and it is therefore necessary to continuously monitor the beam status in a non-invasive way. At ALBA, the visible part of the synchrotron radiation itself is used to measure distribution of electrons in the machine. The used synchrotron radiation is guided far from the machine tunnel up to an \u201cextraction mirror\u201d. In order to maintain the vacuum in the tunnel, the radiation routed up to the mirror is in-vacuum too. A Torr Scientific viewport is used for extracting the light. The goal this year is to measure the transverse beam size by using the interference pattern produced by the synchrotron radiation passing through a double slits aperture. The performance of this kind of experiment requires the preservation of the quality of the light. Torr Scientific therefore provided a special viewport with a flatness better than lambda\/10 and a curvature better than 1 arc sec. Accelerator Division Researcher Laura Torino<br \/>\nsaid \u2018the special viewport we ordered fulfills all the requirements outstandingly; even better than what we were asking. Thank you for the great job you did\u2019. This ALBA project is sponsored by oPAC.<a href=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?ssl=1\"><img data-attachment-id=\"982\" data-permalink=\"https:\/\/www.rbdinstruments.com\/blog\/torr-scientific-vacuum-window-used-on-alba\/albavpz\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=550%2C412&amp;ssl=1\" data-orig-size=\"550,412\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon DIGITAL IXUS 75&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1389629857&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;5.8&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.125&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"albaVPZ\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=300%2C224&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=550%2C412&amp;ssl=1\" decoding=\"async\" loading=\"lazy\" class=\"lazy alignnone size-medium wp-image-982\" alt=\"albaVPZ\" src=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/plugins\/jquery-image-lazy-loading\/images\/grey.gif?resize=300%2C224&#038;ssl=1\" data-original=\"https:\/\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ-300x224.jpg\" width=\"300\" height=\"224\" srcset=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?resize=300%2C224&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?resize=400%2C300&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?w=550&amp;ssl=1 550w\" sizes=\"(max-width: 300px) 100vw, 300px\" data-recalc-dims=\"1\" \/><noscript><img data-attachment-id=\"982\" data-permalink=\"https:\/\/www.rbdinstruments.com\/blog\/torr-scientific-vacuum-window-used-on-alba\/albavpz\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=550%2C412&amp;ssl=1\" data-orig-size=\"550,412\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon DIGITAL IXUS 75&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1389629857&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;5.8&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.125&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"albaVPZ\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=300%2C224&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=550%2C412&amp;ssl=1\" decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-982\" alt=\"albaVPZ\" src=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?resize=300%2C224&#038;ssl=1\" width=\"300\" height=\"224\" srcset=\"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?resize=300%2C224&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?resize=400%2C300&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?w=550&amp;ssl=1 550w\" sizes=\"(max-width: 300px) 100vw, 300px\" data-recalc-dims=\"1\" \/><\/noscript><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Located in Barcelona, ALBA is a Synchrotron Light Source producing radiation for experiments in many fields of science, www.cells.es. The quality of the radiation delivered to users depends on the quality of the electron beam and it is therefore necessary &hellip; <a href=\"https:\/\/www.rbdinstruments.com\/blog\/torr-scientific-vacuum-window-used-on-alba\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":51,"featured_media":982,"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":[126,127],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/02\/albaVPZ.jpg?fit=550%2C412&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2DEXo-fP","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":2645,"url":"https:\/\/www.rbdinstruments.com\/blog\/infrared-bakeout-package\/","url_meta":{"origin":981,"position":0},"title":"Infrared Bakeout Package","author":"Randy","date":"November 14, 2019","format":false,"excerpt":"Our new VB series bakeout packages are an easy way to remove water vapor from vacuum chambers. The UHV-compatible IRB-600 short wave infrared radiation emitter mounts on a standard 2.75\u201d\/70mm CF flange. The BC-3 controller uses thermocouple feedback to regulate the vacuum chamber temperature, controls the power to the IRB-600\u2026","rel":"","context":"In &quot;General Optics and Vacuum&quot;","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"BC-3-Bake-Out-Controller","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2019\/11\/BC-3-Bake-Out-Controller.jpg?fit=938%2C500&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2019\/11\/BC-3-Bake-Out-Controller.jpg?fit=938%2C500&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2019\/11\/BC-3-Bake-Out-Controller.jpg?fit=938%2C500&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":359,"url":"https:\/\/www.rbdinstruments.com\/blog\/lab6-filament-rejuvenation\/","url_meta":{"origin":981,"position":1},"title":"LaB6 filament Rejuvenation","author":"Randy","date":"February 17, 2013","format":false,"excerpt":"Lanthanum hexaboride (LaB6 ) filaments provide a very stable emission of electron current in the hot cathode electron sources used in many scanning Auger electron spectrometers. However, this type of filament is susceptible to deactivation from vacuum contaminants such as fluorine. If your LaB6 filament becomes contaminated it may exhibit\u2026","rel":"","context":"In &quot;Operation and Calibration Procedures&quot;","block_context":{"text":"Operation and Calibration Procedures","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/operation-and-calibration-procedures\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2013\/02\/Unstable-Auger-data.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":2478,"url":"https:\/\/www.rbdinstruments.com\/blog\/5kv-floating-picoammeter\/","url_meta":{"origin":981,"position":2},"title":"5 kV floating Picoammeter Video","author":"Randy","date":"February 16, 2021","format":false,"excerpt":"This blog posts explains how a picoammeter can be floated up to +\/- 5 kV DC It includes a link to a video that shows a 9103 USB picoammeter being floated up to 5 kV and also a Keithley 485 picoammeter trying to float up to 5 kV.","rel":"","context":"In &quot;9103 USB Picoammeter&quot;","block_context":{"text":"9103 USB Picoammeter","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/9103-usb-picoammeter\/"},"img":{"alt_text":"9103 HV","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2019\/02\/9103.jpg?fit=518%2C250&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1772,"url":"https:\/\/www.rbdinstruments.com\/blog\/finding-vacuum-chamber-leaks\/","url_meta":{"origin":981,"position":3},"title":"Finding Vacuum chamber leaks","author":"Randy","date":"May 24, 2016","format":false,"excerpt":"When it comes to locating vacuum chamber leaks, there are a few different methods that can be used depending on the vacuum level of the leak. I like to categorize leaks into three types- Gross leaks, mid vacuum leaks and high vacuum leaks. Gross leaks are the type where the\u2026","rel":"","context":"In &quot;General Optics and Vacuum&quot;","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"RGA","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2016\/05\/RGA.jpg?fit=594%2C402&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":381,"url":"https:\/\/www.rbdinstruments.com\/blog\/ion-plasma-to-clean-ion-pumps\/","url_meta":{"origin":981,"position":4},"title":"Ion Plasma to clean ion pumps","author":"Randy","date":"March 17, 2013","format":false,"excerpt":"If you try to start an ion pump when the vacuum in the chamber is in the mid 10-4 range, the gas load will be high enough to produce a visible ion plasma. \u00a0Normally you don\u2019t start the ion pumps until the vacuum is pulled down to the low 10-5\u2026","rel":"","context":"In &quot;General Optics and Vacuum&quot;","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"ion pump element","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2012\/10\/DI-Ion-pump-element.png?fit=510%2C595&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2904,"url":"https:\/\/www.rbdinstruments.com\/blog\/new-ion-beam-profiler\/","url_meta":{"origin":981,"position":5},"title":"New Ion Beam Profiler","author":"Randy","date":"June 26, 2020","format":false,"excerpt":"This technology is an ion beam profiler that can reconstruct the ion beam intensity in two dimensions with a single measurement device. There are many currently available commercial solutions, but they are overly complicated, require large manipulators that may not fit on existing systems, or require long scan times to\u2026","rel":"","context":"In &quot;General Optics and Vacuum&quot;","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"RBD IG2 ion gun","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2020\/06\/RBD-IG2-ion-gun.jpg?fit=500%2C305&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/981"}],"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\/51"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/comments?post=981"}],"version-history":[{"count":2,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/981\/revisions"}],"predecessor-version":[{"id":988,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/981\/revisions\/988"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media\/982"}],"wp:attachment":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media?parent=981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/categories?post=981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/tags?post=981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}