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The beam can deliver 2~10$ ^{5} \% Sigma ^- $ per machine burst at 330 GeV/c with a background of 5 10$ ^{5} \% \pi ^- $. \\ \\ The goals of the experiment are: observation of charmed particles, mainly the charmed-strange baryons and measurements of their production in the kinematical range x$ _{F} $~$>$~0.2, and their decay properties, a search for exotic states such as U(3100) observed in the previous CERN hyperon beam experiment WA62, measurements of hyperon polarization and production properties. \\ \\ A vertex detector consisting of 24 silicon microstrip planes with 25~$\mu$m pitch and 6~planes with 50~$\mu$m pitch provides track measurements of sufficient accuracy to identify the decays of short living charmed particles and measure their lifetimes. A RICH detector provides good $\pi$/K separation for momenta up to 100~GeV/c and $\pi$/p separation up to 150~GeV/c. Photons are detected by a lead glass calorimeter and neutrons by a hadron calorimeter of the ``spaghetti'' type. \\ \\ The experiment had 3 runs of data taking in 1991, 1993 and 1994. 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The beam can deliver 2~10$ ^{5} \% Sigma ^- $ per machine burst at 330 GeV/c with a background of 5 10$ ^{5} \% \pi ^- $. \\ \\ The goals of the experiment are: observation of charmed particles, mainly the charmed-strange baryons and measurements of their production in the kinematical range x$ _{F} $~$&gt;$~0.2, and their decay properties, a search for exotic states such as U(3100) observed in the previous CERN hyperon beam experiment WA62, measurements of hyperon polarization and production properties. \\ \\ A vertex detector consisting of 24 silicon microstrip planes with 25~$\mu$m pitch and 6~planes with 50~$\mu$m pitch provides track measurements of sufficient accuracy to identify the decays of short living charmed particles and measure their lifetimes. A RICH detector provides good $\pi$/K separation for momenta up to 100~GeV/c and $\pi$/p separation up to 150~GeV/c. Photons are detected by a lead glass calorimeter and neutrons by a hadron calorimeter of the ``spaghetti'' type. \\ \\ The experiment had 3 runs of data taking in 1991, 1993 and 1994." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="Experiments32at32CERN search" lang="zh">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=zh_TW&referer=https%3A//cds.cern.ch/record/5219%3Fln%3Dzh_TW" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=zh_TW">搜尋</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=zh_TW">提交</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=zh_TW">幫助</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=zh_TW">個人化</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=zh_TW">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=zh_TW">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=zh_TW">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=zh_TW">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=zh_TW" class="navtrail">主頁</a> > <a href="/collection/Multimedia%20%26%20Outreach?ln=zh_TW" class="navtrail">Multimedia & Outreach</a> > <a href="/collection/Experiments%20at%20CERN?ln=zh_TW" class="navtrail">Experiments at CERN</a> > Hyperon Beam Experiment </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/5219/?ln=zh_TW">Information </a></li><li class=""><a href="/record/5219/comments?ln=zh_TW">Discussion (0) </a></li><li class="disabled"><a>Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="5219"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2"> <a style="color:#fff;text-decoration:none;" href="https://cds.cern.ch/collection/Experiments%20at%20CERN">Experiments at CERN</a> </td> </tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Hyperon Beam Experiment</b></td></tr> <tr><td class="formatRecordLabel"> Experiment </td><td style="padding-left:5px;">WA89</td></tr> <tr><td class="formatRecordLabel"> Greybook </td><td style="padding-left:5px;">See <a href="https://greybook.cern.ch/greybook/experiment/detail?id=WA89">WA89 experiment</a></td></tr> <tr><td class="formatRecordLabel"> Approved </td><td style="padding-left:5px;">11 February 1988</td></tr> <tr><td class="formatRecordLabel"> Status </td><td style="padding-left:5px;">Finished</td></tr> <tr><td class="formatRecordLabel"> Collaboration </td><td style="padding-left:5px;">OMEGA/HYPERON</td></tr> <tr><td class="formatRecordLabel"> Accelerator </td><td style="padding-left:5px;">CERN SPS</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">The experiment WA89 uses the upgraded Omega facility together with a hyperon beam installed at the end of the H1 beamline. The beam can deliver 2 10$ ^{5} \% Sigma ^- $ per machine burst at 330 GeV/c with a background of 5 10$ ^{5} \% \pi ^- $. <br/> <br/> The goals of the experiment are: observation of charmed particles, mainly the charmed-strange baryons and measurements of their production in the kinematical range x$ _{F} $ $>$ 0.2, and their decay properties, a search for exotic states such as U(3100) observed in the previous CERN hyperon beam experiment WA62, measurements of hyperon polarization and production properties. <br/> <br/> A vertex detector consisting of 24 silicon microstrip planes with 25 $\mu$m pitch and 6 planes with 50 $\mu$m pitch provides track measurements of sufficient accuracy to identify the decays of short living charmed particles and measure their lifetimes. A RICH detector provides good $\pi$/K separation for momenta up to 100 GeV/c and $\pi$/p separation up to 150 GeV/c. Photons are detected by a lead glass calorimeter and neutrons by a hadron calorimeter of the ``spaghetti'' type. <br/> <br/> The experiment had 3 runs of data taking in 1991, 1993 and 1994.</td></tr> <tr><td class="formatRecordLabel"> Related document(s) </td><td style="padding-left:5px;"><a href='https://cds.cern.ch/record/301194'>CERN-SPSC-87-43  (SPSLC-P-233)</a><br/>CERN-SPSC-90-25  (SPSLC-M-453)<br/><a href='https://cds.cern.ch/record/493764'>CERN-SPSLC-91-9  (SPSLC-M-461)</a><br/><a href='https://cds.cern.ch/record/318747'>CERN-SPSLC-91-54  (SPSLC-M-477)</a><br/><a href='https://cds.cern.ch/record/318732'>CERN-SPSLC-92-4  (SPSLC-M-482)</a><br/><a href='https://cds.cern.ch/record/318731'>CERN-SPSLC-92-5  (SPSLC-M-483)</a><br/><a href='https://cds.cern.ch/record/318642'>CERN-SPSLC-92-29  (SPSLC-M-495)</a><br/><a href='https://cds.cern.ch/record/493759'>CERN-SPSLC-92-39  (SPSLC-M-499)</a><br/><a href='https://cds.cern.ch/record/493754'>CERN-SPSLC-93-2  (SPSLC-M-516)</a><br/><a href='https://cds.cern.ch/record/310556'>CERN-SPSLC-93-32  (SPSLC-M-526)</a><br/></td></tr> </table> <div></div> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> 記錄創建於2000-11-07，最後更新在2022-11-16</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=zh_TW&p=recid%3A5219&rm=wrd" class="moreinfo">相似記錄</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <small class="detailedRecordActions">External link:</small><br /><small><a href="http://vsnhd1.cern.ch/"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Download fulltext" /><br />Experiment home page</a></small> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=zh_TW&recid=5219">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/hx?ln=zh_TW">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/hm?ln=zh_TW">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/xm?ln=zh_TW">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/xd?ln=zh_TW">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/xe?ln=zh_TW">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/xn?ln=zh_TW">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/5219/export/xw?ln=zh_TW">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/cds:5219/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/5219', addEmail: true, title: "Hyperon Beam Experiment", description: "The experiment WA89 uses the upgraded Omega facility together with a hyperon beam installed at the end of the H1 beamline. The beam can deliver 2~10$ ^{5} \\% Sigma ^- $ per machine burst at 330 GeV/c with a background of 5 10$ ^{5} \\% \\pi ^- $. \\\\ \\\\ The goals of the experiment are: observation of charmed particles, mainly the charmed-strange baryons and measurements of their production in the kinematical range x$ _{F} $~$>$~0.2, and their decay properties, a search for exotic states such as U(3100) observed in the previous CERN hyperon beam experiment WA62, measurements of hyperon polarization and production properties. \\\\ \\\\ A vertex detector consisting of 24 silicon microstrip planes with 25~$\\mu$m pitch and 6~planes with 50~$\\mu$m pitch provides track measurements of sufficient accuracy to identify the decays of short living charmed particles and measure their lifetimes. A RICH detector provides good $\\pi$/K separation for momenta up to 100~GeV/c and $\\pi$/p separation up to 150~GeV/c. Photons are detected by a lead glass calorimeter and neutrons by a hadron calorimeter of the ``spaghetti\'\' type. \\\\ \\\\ The experiment had 3 runs of data taking in 1991, 1993 and 1994." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=zh_TW">搜尋</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=zh_TW">提交</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=zh_TW">個人化</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=zh_TW">幫助</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> 伺服器系統： <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> 管理者： <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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