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Lead tungstate crystal with a touch of oxygen in this crystalline form is highly transparent and scintillates when electrons and photons pass through it. This means it produces light in proportion to the particle’s energy. CMS contains nearly 80’000 such crystals, each of which took two days to grow. This technology developed at CERN has applications in medical imaging, for example improving cancer diagnosis. The Compact Muon Solenoid (CMS) is a general-purpose detector at the Large Hadron Collider (LHC). " /> <meta name="keywords" content="LHC, DE" /> <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" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="Crystal Detectors" name="citation_title" /> <meta name="citation_online_date" content="2024/02/08"> <meta content="CERN-OBJ-DE-124" name="citation_technical_report_number" />  <meta content="Crystal Detectors" property="og:title" /> <meta content="Les détecteurs à cristaux" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2888738" property="og:url" /> <meta name="twitter:image" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.gif?subformat=icon" /> <meta property="og:image" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.gif?subformat=icon" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.gif?subformat=icon" /> <meta property="og:image" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.jpeg" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.jpeg" /> <meta property="og:image" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.jpeg?subformat=icon-180" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.jpeg?subformat=icon-180" /> <meta property="og:image" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.gif?subformat=icon" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2888738/files/Crystal detectors.gif?subformat=icon" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="The crystals used in CMS’s electromagnetic calorimeter may look like simple bricks of glass, but they are in fact mostly metal and are heavier than steel! Lead tungstate crystal with a touch of oxygen in this crystalline form is highly transparent and scintillates when electrons and photons pass through it. This means it produces light in proportion to the particle’s energy. CMS contains nearly 80’000 such crystals, each of which took two days to grow. This technology developed at CERN has applications in medical imaging, for example improving cancer diagnosis. The Compact Muon Solenoid (CMS) is a general-purpose detector at the Large Hadron Collider (LHC)." property="og:description" /> <meta content="Les cristaux utilisés dans le calorimètre électromagnétique du CMS ressemblent à de simples briques de verre. Ils sont en fait surtout composés de métal et sont plus lourds que l'acier ! Le cristal de tungstate de plomb, qui contient un soupçon d'oxygène, est très transparent et scintille lorsque des électrons et des photons le traversent. La lumière qu'il produit est proportionnelle à l'énergie de la particule. CMS contient près de 80 000 cristaux de tungstate de plomb. Deux jours ont été nécessaires pour produire chacun d'entre eux. Développée au CERN, cette technologie est utilisée en imagerie médicale pour améliorer le dépistage du cancer par exemple. 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Lead tungstate crystal with a touch of oxygen in this crystalline form is highly transparent and scintillates when electrons and photons pass through it. This means it produces light in proportion to the particle’s energy. CMS contains nearly 80’000 such crystals, each of which took two days to grow. This technology developed at CERN has applications in medical imaging, for example improving cancer diagnosis. The Compact Muon Solenoid (CMS) is a general-purpose detector at the Large Hadron Collider (LHC).</td></tr> <tr><td class="formatRecordLabel"> Description (French) </td><td style="padding-left:5px;">Les cristaux utilisés dans le calorimètre électromagnétique du CMS ressemblent à de simples briques de verre. Ils sont en fait surtout composés de métal et sont plus lourds que l'acier ! Le cristal de tungstate de plomb, qui contient un soupçon d'oxygène, est très transparent et scintille lorsque des électrons et des photons le traversent. La lumière qu'il produit est proportionnelle à l'énergie de la particule. CMS contient près de 80 000 cristaux de tungstate de plomb. Deux jours ont été nécessaires pour produire chacun d'entre eux. Développée au CERN, cette technologie est utilisée en imagerie médicale pour améliorer le dépistage du cancer par exemple. </td></tr> <tr><td class="formatRecordLabel"> Keywords </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=keyword&p=LHC&ln=en">LHC</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=DE&ln=en">DE</a></td></tr> <tr> <td class="formatRecordLabel"> Physical characteristics </td> <td style="padding-left:5px;"> </td> </tr> <tr><td class="formatRecordLabel"> Availability </td><td style="padding-left:5px;">Available</td></tr> <tr><td class="formatRecordLabel"> Access </td><td style="padding-left:5px;">Public</td></tr> <tr><td class="formatRecordLabel"> Past loans </td><td style="padding-left:5px;">The Globe of Science and Innovation - CERN</td></tr> <tr><td class="formatRecordLabel"> File(s) </td><td style="padding-left:5px;"><div style="clear:both"><center><small><strong>© CERN</strong></small></center><center><small><a href="https://cds.cern.ch/help/high-res-multimedia?ln=en">Accessing copyrighted material</a></small></center><br /><div style="text-align:center">Total images: 1</div> <div style="text-align:center;margin:10px"> <div style="text-align:center;vertical-align:top;"> <a id="thumb1" href="https://cds.cern.ch/record/2888738/files/Crystal%20detectors.gif?subformat=icon" class="highslide" onclick="return hs.expand(this)"> <img src='/img/file-icon-image-96x128.png' data-src="https://cds.cern.ch/record/2888738/files/Crystal%20detectors.gif?subformat=icon" style="max-height:490px; 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