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Building on the BDF/SHiP Comprehensive Design Study (CDS), the assessment rests on the generic requirements and constraints that allow preserving the physics reach of the facility by making use of the 4 ⇥1019 protons per year at 400 GeV that are currently not exploited at the SPS and for which no existing facility is compatible. The options considered involve the underground areas TCC4, TNC, and ECN3. Recent improvements of the BDF design at the current location (referred to as ‘TT90-TCC9-ECN4’) are also mentioned together with ideas for yet further improvements. The assessments of the alternative locations compiled the large amount of information that is already available together with a set of conceptual studies that were performed during 2021. The document concludes with a qualitative comparison of the options, summarising the associated beneﬁts and challenges of each option, such that a recommendation can be made about which location is to be pursued. The most critical location-speciﬁc studies required to specify the implementation and cost for each option are identiﬁed so that the detailed investigation of the retained option can be completed before the end of 2022. Aberle, Oliver; Ahdida, Claudia; Arrutia Sota, Pablo Andreas; Balazs, Kincso; Bernhard, Johannes; Brugger, Markus; Calviani, Marco; Dutheil, Yann; Franqueira Ximenes, Rui; Fraser, Matthew Alexander; Galleazzi, Frederic; Gilardoni, Simone; Grenard, Jean-Louis; Griesemer, Tina; Jacobsson, Richard; Kain, Verena; Lafarge, Damien; Marsh, Simon; Martin Ruiz, Jose Maria; Mena Andrade, Ramiro Francisco; Muttoni, Yvon; Navascues Cornago, Angel; Ninin, Pierre; Osborne, John Andrew; Ramjiawan, Rebecca Louise; Santos Diaz, Pablo; Sanchez Galan, Francisco; Vincke, Heinz; Vojtyla, Pavol" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); 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min-height: 360px; } </style> <table class="formatRecordTableFullWidth"> <tr> <td class="formatRecordHeader" style="background-image: url('/img/journals.jpg');" colspan="2">  Preprint </td> </tr> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;">CERN-ACC-NOTE-2022-0009 ; CERN-PBC-Notes-2022-002</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Study of alternative locations for the SPS Beam Dump Facility</b></td></tr> <style> .video_control_container, #video_controlbutton { display: none; }#video_detailbox_download {display: none;}#video_detailbox_embed {display: none;}</style> <div class="video_control_container"> <div style="box-sizing: inherit;position: relative;min-height: 1em;margin: 1em 0;background: #f8f8f9;padding: 1em 1.5em;line-height: 1.4285em;transition: opacity .1s ease,color .1s ease,background .1s ease,box-shadow .1s ease,-webkit-box-shadow .1s ease;border-radius: .28571429rem;font-size: 1.1em;margin-top: 0;margin-bottom: 6px;background-color: #f8ffff;color: #276f86;box-shadow: 0 0 0 1px #a9d5de inset,0 0 0 0 transparent;"> <i class="fa fa-info"></i><span style="padding-left: 9px;">If you experience any problem watching the video, click the download button below</span> </div> <a id="video_controlbutton_download" rel="download_button" class="video_controlbutton" href="#">Download</a> <a id="video_controlbutton_embed" class="video_controlbutton" href="#">Embed</a> </div> <div id="video_detailbox_download" style="margin:10px"> </div> <div id="video_detailbox_embed" style="margin:10px"> </div> <tr><td class="formatRecordLabel"> <span style="white-space:nowrap;">Author(s)</span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Verstecken" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Zeige alle 29 Autoren" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Aberle%2C%20Oliver&ln=de">Aberle, Oliver</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ahdida%2C%20Claudia&ln=de">Ahdida, Claudia</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Arrutia%20Sota%2C%20Pablo%20Andreas&ln=de">Arrutia Sota, Pablo Andreas</a> (University of Oxford (GB)) ; <a href="https://cds.cern.ch/search?f=author&p=Balazs%2C%20Kincso&ln=de">Balazs, Kincso</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bernhard%2C%20Johannes&ln=de">Bernhard, Johannes</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Brugger%2C%20Markus&ln=de">Brugger, Markus</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Calviani%2C%20Marco&ln=de">Calviani, Marco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Dutheil%2C%20Yann&ln=de">Dutheil, Yann</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Franqueira%20Ximenes%2C%20Rui&ln=de">Franqueira Ximenes, Rui</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Fraser%2C%20Matthew%20Alexander&ln=de">Fraser, Matthew Alexander</a> (CERN)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Galleazzi%2C%20Frederic&ln=de">Galleazzi, Frederic</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Gilardoni%2C%20Simone&ln=de">Gilardoni, Simone</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Grenard%2C%20Jean-Louis&ln=de">Grenard, Jean-Louis</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Griesemer%2C%20Tina&ln=de">Griesemer, Tina</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Jacobsson%2C%20Richard&ln=de">Jacobsson, Richard</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Kain%2C%20Verena&ln=de">Kain, Verena</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lafarge%2C%20Damien&ln=de">Lafarge, Damien</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Marsh%2C%20Simon&ln=de">Marsh, Simon</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Martin%20Ruiz%2C%20Jose%20Maria&ln=de">Martin Ruiz, Jose Maria</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mena%20Andrade%2C%20Ramiro%20Francisco&ln=de">Mena Andrade, Ramiro Francisco</a> (Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)) ; <a href="https://cds.cern.ch/search?f=author&p=Muttoni%2C%20Yvon&ln=de">Muttoni, Yvon</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Navascues%20Cornago%2C%20Angel&ln=de">Navascues Cornago, Angel</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ninin%2C%20Pierre&ln=de">Ninin, Pierre</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Osborne%2C%20John%20Andrew&ln=de">Osborne, John Andrew</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ramjiawan%2C%20Rebecca%20Louise&ln=de">Ramjiawan, Rebecca Louise</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Santos%20Diaz%2C%20Pablo&ln=de">Santos Diaz, Pablo</a> (National University of Science and Technology "MISIS" (RU)) ; <a href="https://cds.cern.ch/search?f=author&p=Sanchez%20Galan%2C%20Francisco&ln=de">Sanchez Galan, Francisco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Vincke%2C%20Heinz&ln=de">Vincke, Heinz</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Vojtyla%2C%20Pavol&ln=de">Vojtyla, Pavol</a> (CERN)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">28 Feb 2022</td></tr>  <script type="text/javascript"> /* * Changes the Imprint title to Date - Duration as requested by RQF0820114 * This is a hack not to touch the general imprint format element */ $(document).ready(function() { var collections = 'NOTE'; if (collections.indexOf('E-LEARNING') > -1) { $('.cern-imprint-label').text('Date - Duration'); } }) </script> <tr><td class="formatRecordLabel cern-imprint-label"> Imprint </td><td style="padding-left:5px;">28 Feb 2022-28 Feb 2022-28 Feb 2022</td></tr>  <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=CERN%20SPS&f=693__a">CERN SPS</a></td></tr> <tr><td class="formatRecordLabel"> Study </td><td style="padding-left:5px;"><a href='https://cds.cern.ch/search?p=693__s:"Physics Beyond Colliders"'>Physics Beyond Colliders</a></td></tr> <tr><td class="formatRecordLabel"> Project </td><td style="padding-left:5px;"><a href='https://cds.cern.ch/search?p=693__p:"Beam Dump Facility"'>Beam Dump Facility</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">As part of the main focus of the BDF Working Group in 2021, this document reports on the study of alternative locations and possible optimisation that may accompany the reuse of existing facilities with the aim of signiﬁcantly reducing the costs of the facility. Building on the BDF/SHiP Comprehensive Design Study (CDS), the assessment rests on the generic requirements and constraints that allow preserving the physics reach of the facility by making use of the 4 ⇥1019 protons per year at 400 GeV that are currently not exploited at the SPS and for which no existing facility is compatible. The options considered involve the underground areas TCC4, TNC, and ECN3. Recent improvements of the BDF design at the current location (referred to as ‘TT90-TCC9-ECN4’) are also mentioned together with ideas for yet further improvements. The assessments of the alternative locations compiled the large amount of information that is already available together with a set of conceptual studies that were performed during 2021. The document concludes with a qualitative comparison of the options, summarising the associated beneﬁts and challenges of each option, such that a recommendation can be made about which location is to be pursued. The most critical location-speciﬁc studies required to specify the implementation and cost for each option are identiﬁed so that the detailed investigation of the retained option can be completed before the end of 2022.</td></tr> <tr><td class="formatRecordLabel"> Submitted by </td><td style="padding-left:5px;"><a href="mailto:lucie.mainoli@cern.ch">lucie.mainoli@cern.ch</a></td></tr> </table> <br/><div><div style="clear: both;"> </div></div> <script type="text/javascript"> // Initially hide: $(".longCaption").hide(); // Allow to toggle visibility: $(".toggleLongCaption").toggle(function(){ $(this).siblings(".longCaption").show('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "mehr" ? "weniger" : "mehr"); },function(){ $(this).siblings(".longCaption").hide('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "mehr" ? 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