- A lab of the Maastricht University is the testbed for technologies to use in the future Einstein Telescope (ET); <\/li>
- To accommodate the construction of a first-of-its-kind telescope as the ET, a wealth of technologies must be tested; <\/li>
- The final decision on where the telescope will be located is expected by the end of 2024; <\/li><\/ul><\/div>\n\n\n\n
Once the headquarter of the local newspaper De Limburger, <\/em>the black box is now at the disposal of Maastricht University<\/a>. There, thousands of square meters host the faculty of Science and Engineering. Entering the building, a plastic model of the Einstein Telescope (ET) Pathfinder laboratory welcomes the visitors. The actual lab camouflages itself among the other research spaces and can be the key to unveiling the secrets we are looking for. <\/p>\n\n\n
<\/a><\/div><\/div>Searching for cracks in relativity theory with the Einstein Telescope<\/div>The Netherlands is allocating 42 million euros from the National Growth Fund for the Einstein Telescope. Another 870 million euros is being set aside for Dutch input into the construction of the project.<\/div><\/div><\/div>\n\n\nThe ET is a proposed advanced gravitational waves observatory. Listening to these waves will shed light on the universe\u2019s origins and the events connected to it. Whereas conventional space telescopes look up to the sky, this observatory measures gravitational waves 200 or 300 meters underground. No tunnels have been dug yet, though. Before the actual telescope is built, scientists simulate its functioning, testing new materials within the ET pathfinder<\/a> laboratory (ETPF). The lab was founded as a partnership between NIKHEF<\/a> \u2013 the Dutch National Institute for Subatomic Physics \u2013 and several other Dutch, Belgian, and German institutions. <\/p>\n\n\n\n
Castle<\/h2>\n\n\n\n
There\u2019s a white clean room with six to seven meters tall towers in the same place where the rotary printing press used to be. A visitors’ room allows seeing the giant clean room from above. The layout resembles the triangle-shaped one of the planned ET. The facility hosts a small prototype interferometer setup, using two independent laser systems to test different materials, coating, cryogenics, and more.<\/p>\n\n\n\n
The ETPF consists of 6 towers, each built to contain a strong vacuum and house different parts of the experiment. These towers are connected by pipes, allowing the laser beam to travel uninterrupted between them. Each tower has a specific purpose.<\/p>\n\n\n\n
\n ![\"\"](\"https:\/\/archive.ioplus.nl\/wp-content\/uploads\/2023\/07\/July2022_Five-Towers-1004x753.jpeg\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/archive.ioplus.nl\/wp-content\/uploads\/2023\/07\/20230623_130952-2-1004x753.png\")
<\/figure>\nThe ETPF towers and an external view of the “black box”. – \u00a9 ET Pathfinder<\/figcaption><\/figure>\n\n\n\n \u201cStarting from the two smaller towers, the first one is called the injection tower, and it prepares the laser beam for the Interferometer,\u201d explains Tobias Schoon, a Ph.D. student at the Department of Gravitational Waves and Fundamental Physics of Maastricht University. \u201cThe second is called the beamsplitter tower, which splits the incoming laser beam in two and sends them into the two arms. At the end of each arm is a bigger tower housing big mirrors, also called test masses. These send the beam back to the beamsplitter, creating interference. The two towers in between will house a similar mirror as the bigger towers, creating a cavity in each arm and making the interferometer even more sensitive.\u201d<\/p>\n\n\n\n
Overall, the ETPF still needs to be completed. \u201cThe first cavity should be ready by early 2024, as the full setup will be ready by 2026,\u201d the researcher adds. Following the site decision, measurements of the actual ET won\u2019t start until 2035, so there are still years ahead to research better components to go with it. <\/p>\n\n\n\n
First of its kind<\/h2>\n\n\n\n
Currently, there is no interferometer in the world with ET specifics. The observatory would have a triangle layout, with ten kilometers-long underground corridors from one end to another. Existing telescopes \u2013 such as Virgo, located near Pisa, Italy \u2013 feature an L-shape. \u201cCurrent detectors can identify one event per week, while the ET would have the capability to grasp up to one million events per year,\u201d stresses Schoon. <\/p>\n\n\n
<\/a><\/div><\/div>Triangle or Double L? The Einstein Telescope might be split into two parts<\/div>The Einstein Telescope (ET) project might be split into two parts, one built in the south of the Netherlands and one in Sardinia, Italy.<\/div><\/div><\/div>\n\n\nItaly and the Euregio Meuse-Rhine (EMR) region \u2013 the area intersecting Germany, Belgium, and the Netherlands, where also Maastricht is \u2013 are the primary candidates for hosting the ET. Italian PM Giorgia Meloni officially unveiled<\/a> Rome\u2019s bid to host the telescope in the decommissioned mine of Sos Enattos<\/em> in Lula, Sardinia. No official bid has been presented by the EMR yet, as Germany might decide to run independently. A group of German scientists suggested Eastern Saxony as an alternative location for the telescope. <\/p>\n\n\n\n
Such an infrastructure can have massive spillover effects on the region that hosts it, with new jobs created and talent attraction. Geological conditions are essential \u2013 the site must have low earthquake risk, and the soil has to be solid and stable \u2013 and so is the region\u2019s attractivity regarding living standards and academic and knowledge ecosystem. The final decision on where the ET will be located is expected by 2026.\u00a0<\/p>\n\n\n\n
Big experiment<\/h2>\n\n\n\n
The ETPF is, like other spaces inside the black box, an experimentation room. The lab will try new laser wavelengths that go beyond the 1064 nm \u2013 the standard used in current gravitational wave detectors \u2013 as experimental new silicon-based mirrors can\u2019t support them. The same can be said for new coatings or cryogenic systems: a wealth of research on many areas needs to be done to accommodate a potential groundbreaking observing tool as the ET promises to be. <\/p>\n\n\n\n
Schoon\u2019s work is a piece of the puzzle that might fit into the future observatory. \u201cHe\u2019s studying non-linear light properties of these new wavelengths to deal with problems that can emerge using them. \u201cWhen I first visited the lab, I was impressed by it and the idea of researching new things, adding to the huge puzzle that physics is,\u201d he says. <\/p>\n\n\n\n
![\"\"](\"https:\/\/archive.ioplus.nl\/wp-content\/uploads\/2023\/07\/20230622_154036-1-1004x753.png\")
Tobias Schoon posing in front of the ETPF – \u00a9 Tobias Schoon<\/figcaption><\/figure>\n\n\n\n As a Ph.D. student, he enjoys the knowledge-sharing environment around the ETPF. \u201cWe operate in work packages, with different competencies from each discipline involved. Being a three-countries effort, there\u2019s a lot of expertise to draw from. In the end, it\u2019s a big experiment where a lot of knowledge and people are involved, and as an academic, you get to know a lot of exciting things that aren\u2019t even connected to your research domain,\u201d he adds. <\/p>\n\n\n\n
Cooperation for knowledge<\/h2>\n\n\n\n
Whether or not the telescope will be built in the EMR, the ETPF will remain a research lab within Maastricht University to serve the purpose of developing and testing new technologies for future gravitational wave detectors. Competition might be tense between countries to get the observatory, while for scientists, cooperation comes first. Openness and knowledge sharing remain the tenets to adhere towards a mission-oriented endeavor: decrypting the biggest black box we could ever imagine: the universe.<\/p>\n","protected":false},"excerpt":{"rendered":"
A plane\u2019s black box is the most sought component when reconstructing the precise dynamics of plane accidents, as it contains all the secrets about the crash. In the Dutch city of Maastricht, there is a building often referred to as the black box, and it can also help reveal many things we don\u2019t know much […]<\/p>\n","protected":false},"author":2084,"featured_media":495536,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[8553,76370],"tags":[60038,36810,5874,66580],"location":[6763],"article_type":[43139],"serie":[],"archives":[],"internal_archives":[],"reboot-archive":[],"class_list":["post-451463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digital","category-science","tag-einstein-telescope","tag-gravitational-waves","tag-maastricht-university","tag-universe","location-netherlands","article_type-features"],"blocksy_meta":[],"acf":{"subtitle":"In what used to be a local newspaper\u2019s rotary printing press facility, scientists are shedding (laser) light on new stories that tell us more about our universe. ","text_display_homepage":false},"author_meta":{"display_name":"Mauro Mereu","author_link":"https:\/\/ioplus.nl\/archive\/author\/mauro-mereu\/"},"featured_img":"https:\/\/ioplus.nl\/archive\/wp-content\/uploads\/2023\/07\/IMG_4593a.jpg","coauthors":[],"tax_additional":{"categories":{"linked":["Digital<\/a>","Science<\/a>"],"unlinked":["Digital<\/span>","Science<\/span>"]},"tags":{"linked":["Einstein telescope<\/a>","gravitational waves<\/a>","Maastricht University<\/a>","universe<\/a>"],"unlinked":["Einstein telescope<\/span>","gravitational waves<\/span>","Maastricht University<\/span>","universe<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 3 years ago","modified":"Updated 3 years ago"},"absolute_dates":{"created":"Posted on July 6, 2023","modified":"Updated on July 6, 2023"},"absolute_dates_time":{"created":"Posted on July 6, 2023 6:30 am","modified":"Updated on July 6, 2023 6:30 am"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/451463","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/users\/2084"}],"replies":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/comments?post=451463"}],"version-history":[{"count":0,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/451463\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media\/495536"}],"wp:attachment":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media?parent=451463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/categories?post=451463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/tags?post=451463"},{"taxonomy":"location","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/location?post=451463"},{"taxonomy":"article_type","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/article_type?post=451463"},{"taxonomy":"serie","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/serie?post=451463"},{"taxonomy":"archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/archives?post=451463"},{"taxonomy":"internal_archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/internal_archives?post=451463"},{"taxonomy":"reboot-archive","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/reboot-archive?post=451463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}