{"id":10,"date":"2016-10-10T13:30:40","date_gmt":"2016-10-10T13:30:40","guid":{"rendered":"http:\/\/wp.lancs.ac.uk\/dune\/?page_id=10"},"modified":"2022-08-31T12:50:36","modified_gmt":"2022-08-31T12:50:36","slug":"dune-prototypes-and-uk-involvement","status":"publish","type":"page","link":"https:\/\/wp.lancs.ac.uk\/dune\/dune-uk\/dune-prototypes-and-uk-involvement\/","title":{"rendered":"Prototypes and UK Involvement"},"content":{"rendered":"<p>DUNE will be 100 times larger than any other detector of its kind and therefore extensive testing must be undertaken in order to scale up existing and new technology. Several prototypes have been proposed and constructed including the 35 ton prototype (which completed operations in 2016, see below) and protoDUNE at CERN (which will take data in 2018). ProtoDUNE will test the single-phase (liquid) and dual-phase (liquid and gas) LArTPC detectors and the 35 ton tested the single phase technology.<\/p>\n<h2 style=\"text-align: center\"><span style=\"text-decoration: underline\">35 Ton Prototype<\/span><\/h2>\n<p><iframe loading=\"lazy\" title=\"35-Ton Prototype Particle Detector for DUNE\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/aZzVx37si9Y?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>The 35 ton prototype that was constructed at Fermilab as one of several prototypes planned in order to test the technology that to be used in the DUNE project. This prototype tested many aspects of the DUNE single-phase (single phase means just liquid inside the detector as opposed to dual, which operates with liquid and gas) design that will not be tested by other LArTPCs before 2017. More specifically, these include testing the <span style=\"color: #003366\"><a style=\"color: #003366\" href=\"https:\/\/web.fnal.gov\/collaboration\/DUNE\/SitePages\/35-t%20Prototype%20Working%20Group.aspx\" target=\"_blank\" rel=\"noopener\">FR4 field cage construction, the gaps between modules, the wrapped wire planes, the light guide style photon detection system, cold ADC ASIC in the readout electronics, and the development of triggerless DAQ operation<\/a><\/span>. Below are images of the prototype and the LArTPC in operation.<\/p>\n<p>&nbsp;<\/p>\n<div id='gallery-1' class='gallery galleryid-10 gallery-columns-1 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/dune-uk\/dune-prototypes-and-uk-involvement\/screen-shot-2016-09-01-at-12-10-26\/'><img loading=\"lazy\" decoding=\"async\" width=\"461\" height=\"424\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.10.26.png\" class=\"attachment-full size-full\" alt=\"\" aria-describedby=\"gallery-1-30\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.10.26.png 461w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.10.26-300x276.png 300w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-30'>\n\t\t\t\tLArTPC in operation\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/dune-uk\/dune-prototypes-and-uk-involvement\/screen-shot-2016-09-01-at-12-09-41\/'><img loading=\"lazy\" decoding=\"async\" width=\"642\" height=\"421\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.41.png\" class=\"attachment-full size-full\" alt=\"\" aria-describedby=\"gallery-1-31\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.41.png 642w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.41-300x197.png 300w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-31'>\n\t\t\t\tWhat is unique about the 36 ton prototype\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/dune-uk\/dune-prototypes-and-uk-involvement\/screen-shot-2016-09-01-at-12-09-57\/'><img loading=\"lazy\" decoding=\"async\" width=\"430\" height=\"305\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.57.png\" class=\"attachment-full size-full\" alt=\"\" aria-describedby=\"gallery-1-32\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.57.png 430w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-09-01-at-12.09.57-300x213.png 300w\" sizes=\"auto, (max-width: 430px) 100vw, 430px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-32'>\n\t\t\t\tSchematic of the LArTPC\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n<h2 style=\"text-align: center\"><span style=\"text-decoration: underline\">35 Ton Prototype: UK Involvement<\/span><\/h2>\n<p>UK groups directly contributed and were vital for the 35ton prototype operation. The following is some of the work that have been contributed by these institutes.<\/p>\n<h2>Data Acquisition System<\/h2>\n<p>One of the most crucial aspects of the prototype was the data acquisition system (DAQ) and was UK led by Giles Barr (Oxford) with other UK expertise: Dom Brailsford (Lancaster), Jonathan Davies (Sussex), Tom Dealtry (Oxford\/ Lancaster), Martin Haigh (Warwick), Tim Nicholls (STFC). The DAQ system allowed enough data to be recorded in order to be analysed and will be indispensable for the future operation of DUNE.<\/p>\n<h2>Camera System<\/h2>\n<p>In order to monitor the interior of the prototype visually a camera system was designed by the Sheffield group. This was faced with many challenges, as the prototype was filled with liquid argon (which boils at 87.3K) and therefore the cameras had to be able to withstand extremely low temperatures and being immersed in liquid. A contained system was developed and built in Sheffield by N McConkey, M Thiesse, N Spooner and it was more specifically designed to monitor the high voltage components in the prototype&#8217;s cryostat (an apparatus for maintaining a very low temperature.) and have the capability to observe breakdowns. Below are several diagrams and pictures of operations of the camera system.<\/p>\n<div id='gallery-2' class='gallery galleryid-10 gallery-columns-3 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-50-02\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"220\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.50.02-300x220.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-39\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.50.02-300x220.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.50.02.png 366w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-39'>\n\t\t\t\tStill from movie showing liquid argon level\nduring filling.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-49-55\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"127\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.55-300x127.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-40\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.55-300x127.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.55.png 756w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-40'>\n\t\t\t\tCalibration images from all 8 cameras showing their views in the cryostat prior to filling\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-49-36\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"141\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.36-300x141.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-41\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.36-300x141.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.36.png 335w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-41'>\n\t\t\t\tCamera case\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-49-45\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"214\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.45-300x214.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-42\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.45-300x214.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.45.png 341w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-42'>\n\t\t\t\tCamera module\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-49-28\/'><img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"300\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.28-297x300.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-43\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.28-297x300.png 297w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.49.28.png 344w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-43'>\n\t\t\t\tModules mounted in the 35t cryostat\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.lancs.ac.uk\/dune\/screen-shot-2016-08-31-at-17-55-48\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.55.48-300x188.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-38\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.55.48-300x188.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-17.55.48.png 667w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-38'>\n\t\t\t\tAPA gap\nrepresentation: black\nnumbers represent\nAPAs, pink the gaps\nin between\n(exaggerated)\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n<p>The camera system did performed very well, and even turned back on in the cold after being power cycled, however the picture degradation increases with time in the cold. The most impressive example was after a site wide power outage when they were left off for 9 days and came back on straight away in the low temperature.<\/p>\n<h2>Charge Deposits<\/h2>\n<p>Another aspect of the 35 ton that was worked on was the determination of the quantity and whereabouts of the collection of charge deposited in the gaps between the Anode Plane Assemblies (APAs), which lie at the heart of the detector. They collect and readout the electrical signals deposited by charged particles entering the detector. Tristan Blackburn of Sussex university is working on characterising these charge deposits so they can be more accurately simulated in the far detector Monte Carlo simulation. Monte Carlo simulations are a type of computational algorithms that utilise on repeated random sampling in order to obtain numerical simulations. Below is a representation of the gaps in the APA.<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_45\" aria-describedby=\"caption-attachment-45\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-45\" src=\"http:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-18.06.43.png\" alt=\"APA gap representation: black numbers represent APAs, pink the gaps in between (exaggerated)\" width=\"810\" height=\"393\" srcset=\"https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-18.06.43.png 810w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-18.06.43-300x146.png 300w, https:\/\/wp.lancs.ac.uk\/dune\/files\/2016\/10\/Screen-Shot-2016-08-31-at-18.06.43-768x373.png 768w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><figcaption id=\"caption-attachment-45\" class=\"wp-caption-text\">APA gap representation: black numbers represent APAs, pink the gaps in between (exaggerated)<\/figcaption><\/figure>\n<p>More information can be found about the 35 ton prototype <span style=\"color: #003366\"><a style=\"color: #003366\" href=\"https:\/\/web.fnal.gov\/collaboration\/DUNE\/SitePages\/35-t%20Prototype%20Working%20Group.aspx\" target=\"_blank\" rel=\"noopener\">here<\/a><span style=\"color: #000000\">.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DUNE will be 100 times larger than any other detector of its kind and therefore extensive testing must be undertaken in order to scale up existing and new technology. Several prototypes have been proposed and constructed including the 35 ton prototype (which completed operations in 2016, see below) and protoDUNE at CERN (which will take data in 2018). ProtoDUNE will [&hellip;]<\/p>\n","protected":false},"author":508,"featured_media":0,"parent":5,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/pages\/10","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/users\/508"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/comments?post=10"}],"version-history":[{"count":7,"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/pages\/10\/revisions"}],"predecessor-version":[{"id":175,"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/pages\/10\/revisions\/175"}],"up":[{"embeddable":true,"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/pages\/5"}],"wp:attachment":[{"href":"https:\/\/wp.lancs.ac.uk\/dune\/wp-json\/wp\/v2\/media?parent=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}