{"id":4286,"date":"2021-03-25T13:24:37","date_gmt":"2021-03-25T12:24:37","guid":{"rendered":"https:\/\/www.pi.infn.it\/?p=4286"},"modified":"2021-04-01T10:46:15","modified_gmt":"2021-04-01T08:46:15","slug":"mercoledi-31-marzo-2021-ore-1500","status":"publish","type":"post","link":"https:\/\/www.pi.infn.it\/?p=4286","title":{"rendered":"Mercoled\u00ec 31 marzo 2021 &#8211; ore 15:00"},"content":{"rendered":"\n<p>\u00a0<\/p>\n<h4>Daniel Guberman &#8211; Universit\u00e0 di Siena \/INFN terr\u00e0 un seminario dal titolo:<\/h4>\n<h3 style=\"text-align: center\"><span style=\"color: #ff0000\"><b>&#8220;Photo-Trap: A photonic crystal light-trap for a large-area, low-noise <\/b><b>SiPM<\/b><b> pixel&#8221;<\/b><\/span><\/h3>\n<p style=\"text-align: justify\"><span style=\"color: #000000\"><strong>Abstract<\/strong>:<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"color: #000000\">Many applications in high energy astrophysics, particle physics or medical imaging demand covering a large detection area with fast photosensors. The use of silicon photomultipliers (SiPMs) in such applications is often limited due to their small sensitive area: they are rarely available in sizes larger than 6 mm x 6 mm. A large number of SiPMs are then needed to cover large detection areas, but cost, noise and complexity of the system scale with the number of SiPMs employed. Photo-Trap provides a low-cost, low-noise solution to build large-area SiPM pixels. Photo-Trap employs a custom-designed 1-D photonic crystal and a wavelength-shifter plastic to optically trap the light until it reaches a SiPM. The pixel collects photons over an area that can be 10-100 times larger than that of commercial SiPMs, with the cost and noise of a single SiPM. I will describe the Photo-Trap idea, the proof-of-concept pixel we plan to build and comment (and hopefully get some feedback) on its expected performance and possible applications.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 Daniel Guberman &#8211; Universit\u00e0 di Siena \/INFN terr\u00e0 un seminario dal titolo: &#8220;Photo-Trap: A photonic crystal light-trap for a large-area, low-noise SiPM pixel&#8221; Abstract: Many applications in high energy astrophysics, particle physics or medical imaging demand covering a large detection area with fast photosensors. The use of silicon photomultipliers (SiPMs) in such applications is [&hellip;]<\/p>\n","protected":false},"author":26,"featured_media":4287,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_links_to":"","_links_to_target":""},"categories":[8],"tags":[],"publishpress_future_action":{"enabled":false,"date":"2026-05-13 19:01:06","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category"},"_links":{"self":[{"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/posts\/4286"}],"collection":[{"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4286"}],"version-history":[{"count":5,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/posts\/4286\/revisions"}],"predecessor-version":[{"id":4335,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/posts\/4286\/revisions\/4335"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=\/wp\/v2\/media\/4287"}],"wp:attachment":[{"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pi.infn.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}