{"id":821587,"date":"2026-08-22T01:30:23","date_gmt":"2026-08-22T01:30:23","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/821587\/"},"modified":"2026-08-22T01:30:23","modified_gmt":"2026-08-22T01:30:23","slug":"final-tests-for-the-ams-upgrade-before-spaceflight-home","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/821587\/","title":{"rendered":"Final tests for the AMS upgrade before spaceflight \u2013 Home"},"content":{"rendered":"

Suspended in the path of a proton beam from CERN\u2019s Super Proton Synchrotron (SPS) was an unusual target: a large silicon tracker destined for space. Known as \u201cLayer-0\u201d, this\u00a0new layer of silicon sensors<\/a>\u00a0will be mounted on top of the\u00a0Alpha Magnetic Spectrometer (AMS)<\/a>\u00a0while it orbits Earth on the International Space Station (ISS). The additional tracker, assembled at CERN, will\u00a0increase the detector\u2019s particle acceptance rate by 300%,<\/a>\u00a0helping the AMS make the most of its remaining years in space before the planned end of the ISS programme\u00a0in\u00a02030.<\/p>\n

From 28 June to 27\u00a0July at the EHN1 facility in CERN\u2019s\u00a0North Area<\/a>, Layer-0 was hung from a robotic arm that moved it through more than 700 positions as it was hit by the SPS beam. Fully automated and synchronised with the detector data acquisition, the movements ensured that all of the tracker\u2019s sensors were exposed to the stream of protons.\u00a0This allowed the team\u00a0to precisely scan the detector plane, mapping the response and position of each sensor and confirming the functionality of the detector. Further data is still being analysed.<\/p>\n

\"\"Layer-0 suspended from a robotic arm being scanned in CERN’s North Area using a proton beam. The tests, a collaboration between AMS and the CERN Experimental Physics (EP) and Beams Departments (BE), will also provide a blueprint for tests of robotic technologies envisioned for potential future detectors. (Image: CERN)<\/p>\n

\u201cThis was our last chance before CERN shuts down all the beams for LS3,\u201d says Corrado Gargiulo, CERN-AMS Chief Engineer. \u201cIt is the first time that such a robotic arm has been used here in the North Area, marking a step\u00a0towards using robotic and automated systems for handling detectors in CERN\u2019s underground areas.\u201d\u00a0This effort will help with the development of technologies envisaged for potential future detectors, including the\u00a0Future Circular Collider<\/a>.<\/p>\n

Exposing detectors to particle beams for calibration is standard practice in particle physics, but\u00a0for the AMS, the\u00a0exercise\u00a0is particularly important. Layer-0 is three metres in diameter and will sit on top of the nine existing tracker layers, which are about one metre across. To correctly align the new and existing layers, the exact position of each of its 768 sensors must be known within a few micrometres, less than the width of a human hair.\u00a0<\/p>\n

Only a few\u00a0milestones remain before Layer-0 can leave Earth.\u00a0Having already passed extensive vibration and thermal-vacuum tests, Layer-0 will now undergo a final acceptance test at\u00a0INFN\u2013University of Perugia in Italy until 30 August, followed in October by\u00a0the last of a series of\u00a0measurements\u00a0performed\u00a0at CERN.<\/p>\n

\"\"Layer-0, the new layer for the AMS upgrade consisting of 768 silicon sensors preassembled at IHEP-Beijing and INFN-Perugia\u00a0and finally\u00a0integrated\u00a0in a cleanroom run by CERN\u2019s EP-Detector Technologies group. It was then precisely measured at the CERN Engineering Department\u2019s Central Workshop and Metrology Laboratory. (Image: CERN)<\/p>\n

In January 2027, the new tracker is expected to fly from Geneva airport directly to the Kennedy Space Center on a commercial cargo plane. Its final journey to the ISS is planned for April, aboard a dedicated SpaceX Cargo Dragon. It will travel together with a new PDS (power distribution system) radiator, forming the largest\u00a0single scientific payload\u00a0ever carried by a Dragon spacecraft. This replacement radiator is vital for the AMS, as it will help restore the entire detector to its intended operating temperature following the performance degradation of the previous radiator over several years of operation in space.<\/p>\n

Installing the new equipment in orbit will present challenges of its own. A series of preparatory spacewalks will be required beforehand to install the interface that will \u201creceive\u201d the new layer.\u00a0Extensive astronaut training is ongoing at the Neutral Buoyancy Laboratory in Houston, one of the world\u2019s largest indoor pools, with\u00a0Gargiuloassisting in the simulation of the installation.\u00a0By May 2027, mechanical and power connections are expected to be completed during further spacewalks, bringing the new system fully online.<\/p>\n

With its new silicon tracker and radiator, the AMS is preparing for a second decade of cosmic-ray exploration from space, ready to continue its mission throughout the final years of the ISS.<\/p>\n","protected":false},"excerpt":{"rendered":"Suspended in the path of a proton beam from CERN\u2019s Super Proton Synchrotron (SPS) was an unusual target:…\n","protected":false},"author":2,"featured_media":821588,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[199,79],"class_list":["post-821587","post","type-post","status-publish","format-standard","has-post-thumbnail","category-physics","tag-physics","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/821587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=821587"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/821587\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/821588"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=821587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=821587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=821587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}