{"id":1126,"date":"2025-02-05T19:46:18","date_gmt":"2025-02-05T18:46:18","guid":{"rendered":"https:\/\/web.infn.it\/km3net-napoli\/?page_id=1126"},"modified":"2025-02-15T19:00:00","modified_gmt":"2025-02-15T18:00:00","slug":"du-integration","status":"publish","type":"page","link":"https:\/\/web.infn.it\/km3net-napoli\/du-integration\/","title":{"rendered":"DU Integration"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column has-black-color has-white-background-color has-text-color has-background has-link-color wp-elements-5599399eab656b5be7ed8d9ed648a828 is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:55%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column has-border-color has-secondary-border-color is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-align-center has-white-color has-secondary-background-color has-text-color has-background has-link-color has-medium-font-size wp-elements-ae6bd59de0007524be929b4d8ff92266\"><strong>Working Group<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<ul class=\"wp-block-list\">\n<li>Andreino Simonelli (DU ISR)<\/li>\n\n\n\n<li>Ciro Cassese<\/li>\n\n\n\n<li>Pasquale Cinotti<\/li>\n\n\n\n<li>Benedetto De Fazio<\/li>\n\n\n\n<li>Emiliano Librizzi<\/li>\n\n\n\n<li>Paolo Otranto<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Liz Morales-Gallegos (LQS)<\/li>\n\n\n\n<li>Pietro Otranto<\/li>\n\n\n\n<li>Lorenzo Panico<\/li>\n\n\n\n<li>Enrico Pizza<\/li>\n\n\n\n<li>Lorenzo Roscilli<\/li>\n\n\n\n<li>Danilo Trotta<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-medium-font-size\">The integration of the Detection Units (DUs) for KM3NeT is a structured process consisting of six stages, primarily conducted in the DU integration hall at the CAPACITY Lab in Caserta. <\/p>\n\n\n\n<p class=\"has-medium-font-size\">The Integration Site Responsible (ISR) oversees a team of five mechanical technicians and four electronics technicians who collaborate to complete the integration efficiently.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2023\/03\/20211008_150823-01-scaled.jpeg\" alt=\"\" style=\"width:415px\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-fe9cc265 wp-block-group-is-layout-flex\">\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-16116bd5e9a3f5e3342e7aeffde65aaf\">Process 1<\/p>\n\n\n\n<p>The first stage involves connecting the Optical Modules (DOMs) to the Vertical Electro-Optical Cable (VEOC). This process requires expertise in fiber splicing, optical testing, and oil filling to ensure proper transmission of optical signals. High-precision techniques are employed to minimize signal loss and maintain the integrity of the fiber-optic connections.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-1024x768.png\" alt=\"\" class=\"wp-image-1155\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-1024x768.png 1024w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-300x225.png 300w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-768x576.png 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-1536x1152.png 1536w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-2048x1536.png 2048w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P1-1020x765.png 1020w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:80%\">\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-20cabf51f7dd4bce5592217c8cb2ad04\">Process 2<\/p>\n\n\n\n<p>In the second stage, the VEOC is connected to the Base Module (BM) via a penetrator. The BM is a heavy titanium cylinder designed to withstand the extreme pressure of 3500 meters deep in the sea while resisting corrosion. Inside the BM, electronics manage the power distribution and host optical switches for signal routing from the DOMs. Advanced splicing and electronic skills are necessary at this stage, along with data acquisition (DAQ) testing to validate the proper functioning of the integrated unit.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"461\" height=\"1024\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-461x1024.jpg\" alt=\"\" class=\"wp-image-1156\" style=\"width:135px;height:auto\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-461x1024.jpg 461w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-135x300.jpg 135w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-768x1707.jpg 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-691x1536.jpg 691w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-922x2048.jpg 922w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-344x765.jpg 344w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P2-scaled.jpg 1152w\" sizes=\"(max-width: 461px) 100vw, 461px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><\/p>\n\n\n\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-2693ad1d5607dd528297a82c3759aef4\">Process 3<\/p>\n\n\n\n<p>The third stage focuses on the calibration of the DU. A special tray equipped with optical fibers and a acoustic tweeters houses all 18 DOMs inside a dark box, where calibration procedures are performed using a replica of the shore station and DAQ codes of the ARCA detector. More details <a href=\"https:\/\/web.infn.it\/km3net-napoli\/du-calibration\/\" data-type=\"link\" data-id=\"https:\/\/web.infn.it\/km3net-napoli\/du-calibration\/\">here<\/a>.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-1024x768.jpeg\" alt=\"\" class=\"wp-image-1157\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-1024x768.jpeg 1024w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-300x225.jpeg 300w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-768x576.jpeg 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-1536x1152.jpeg 1536w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-2048x1536.jpeg 2048w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P3-1020x765.jpeg 1020w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><\/p>\n\n\n\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-438ea129d21e97ab68fdd561595ddfdf\">Process 4<\/p>\n\n\n\n<p>The Detection Unit is then furled around a metal structure known as the Launch Module (LOM). The LOM is designed to securely hold all 18 DOMs within dedicated receptacles. During this process, the DOMs are attached to Dyneema ropes, which provide the necessary mechanical support and connection to the anchor system.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-1024x768.png\" alt=\"\" class=\"wp-image-1158\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-1024x768.png 1024w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-300x225.png 300w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-768x576.png 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-1536x1152.png 1536w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-2048x1536.png 2048w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P4_-1020x765.png 1020w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p><\/p>\n\n\n\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-1b6260ba72b9469eb6d46543519fd894\">Process 5<\/p>\n\n\n\n<p>The next step involves mounting the long interlink cables onto designated bollards on the anchor. At this stage, the LOM, along with the DOMs and the BM, is securely fastened to the anchor structure. A comprehensive communication and power test of the integrated DU is conducted to verify its readiness before shipping.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-768x1024.png\" alt=\"\" class=\"wp-image-1159\" style=\"width:230px;height:auto\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-768x1024.png 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-225x300.png 225w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-1152x1536.png 1152w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-1536x2048.png 1536w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P5-574x765.png 574w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><\/p>\n\n\n\n<p class=\"has-secondary-color has-text-color has-link-color has-large-font-size wp-elements-9801d016a3b301eaa7a48e42c03e0ccc\">Process 6<\/p>\n\n\n\n<p>Finally, the DUs are transported to Malta Harbor, where they undergo another round of testing to ensure functionality after transit. The final rigging procedures are carried out to prepare the DUs for embarkation onto the deployment vessel, ensuring they are ready for installation in the deep-sea environment.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-1024x768.png\" alt=\"\" class=\"wp-image-1162\" srcset=\"https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-1024x768.png 1024w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-300x225.png 300w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-768x576.png 768w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-1536x1152.png 1536w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-2048x1536.png 2048w, https:\/\/web.infn.it\/km3net-napoli\/wp-content\/uploads\/2025\/02\/P6-1020x765.png 1020w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p>Each of these six integration processes is crucial for the successful deployment and operation of the KM3NeT neutrino telescope, requiring precision, expertise, and collaboration among all team members involved.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-white-color has-secondary-background-color has-text-color has-background is-layout-constrained wp-container-core-group-is-layout-2b508e44 wp-block-group-is-layout-constrained\" style=\"margin-top:0px;padding-top:4vw;padding-right:4vw;padding-bottom:4vw;padding-left:4vw\">\n<h5 class=\"wp-block-heading has-text-align-center has-x-large-font-size\">DUs integrated at the CAPACITY LAB: <\/h5>\n\n\n\n<p class=\"has-text-align-center\">06\/02\/2025<\/p>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Working Group The integration of the Detection Units (DUs) for KM3NeT is a structured process consisting of six stages, primarily conducted in the DU integration hall at the CAPACITY Lab in Caserta. The Integration Site Responsible (ISR) oversees a team of five [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-fullwidth","meta":{"footnotes":""},"class_list":["post-1126","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/pages\/1126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/comments?post=1126"}],"version-history":[{"count":32,"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/pages\/1126\/revisions"}],"predecessor-version":[{"id":1397,"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/pages\/1126\/revisions\/1397"}],"wp:attachment":[{"href":"https:\/\/web.infn.it\/km3net-napoli\/wp-json\/wp\/v2\/media?parent=1126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}