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hreflang="en" title="Blowing out 70 candles: CERN celebrates seven decades of discoveries and looks ahead to a brilliant future of science and innovation"> <span> Blowing out 70 candles: CERN celebrates seven... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> At CERN </div> <div class="preview-card__category" style="color:"> Press release </div> <div class="preview-card__date" style="color:"> <time datetime="2024-10-01T10:00:00Z">1 October, 2024</time> </div> </div> </div> </div> </div> </div> </div> <div class="view-footer"> <p class="cern-btn"><a class="cern-btn" href="/news?audience=23">Latest news</a></p> </div> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-6 col-lg-6 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/news?audience=23" 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(Video: CERN)</figcaption></figure> <p class="no-column">The High-Luminosity Large Hadron Collider (HL-LHC) project aims to crank up the performance of the LHC in order to increase the potential for discoveries after 2030. The objective is to increase the integrated luminosity by a factor of 10 beyond the LHC’s design value.</p> <p class="no-column">Luminosity is an important indicator of the performance of an <a href="/science/accelerators/how-accelerator-works">accelerator</a>: it is proportional to the number of collisions that occur in a given amount of time. The higher the luminosity, the more data the experiments can gather to allow them to observe rare processes.</p> <p class="no-column">The High-Luminosity LHC, which should be operational <a href="https://hilumilhc.web.cern.ch/article/ls3-schedule-change">from the beginning of 2029</a>, will allow physicists to&nbsp;study known mechanisms in greater detail, such as the <a href="/science/physics/higgs-boson">Higgs boson</a>, and observe rare new phenomena that might reveal themselves. For example, the High-Luminosity LHC will produce at least 15 million Higgs bosons per year, compared to around three million from the LHC in 2017.</p> <p class="no-column">The High-Luminosity LHC project was announced as the top priority of the <a href="/news/news/cern/cern-council-updates-european-strategy-particle-physics">European Strategy for Particle Physics</a> in 2013.</p> <p class="column-left image-align">Its development depends on several technological innovations. &nbsp;The first phase of the project began in 2011 and&nbsp;was partly financed by the European Commission’s seventh framework programme (FP7). This first phase brought together many laboratories from CERN’s Member States, as well as from the US, Japan and Russia. The design study came to a close in October 2015 with the publication of a Preliminary Design Report (PDR), marking the start of the construction phase for the project at CERN and in industry. The HL-LHC Technical Design Report (TDR) was published in 2017 – reflecting the design from before the rescoping exercise in 2016 – and its <a href="https://e-publishing.cern.ch/index.php/CYRM/issue/view/127">final version</a> in 2020. The <a href="/news/news/accelerators/ground-breaking-ceremony-high-luminosity-lhc">civil-engineering</a> work started in April 2018.&nbsp;</p> <p class="column-left image-align">The project is led by CERN with the support of an international collaboration of 44 institutions in 20 countries - the vast majority in various European countries among which Italy, Spain, Sweden and the United Kingdom - and including a number of CERN’s non-Member States such as the United States, Japan and Canada.</p> </div> </div> <div class="component-margin component-margin-medium" ></div> </div> </div> </div> </div> </div> <div class="field--item"> <div class="component-row component-row__display__centered section-navigation effect_none box-effects"> <div class="component-row__row"> <div class="component-row__column component-row__center section-has-no-column col-md-12 col-sm-12 col-xs-12"> <div class="box-effects-wrapper enable-effects "> <div id="preview-card--4" class="component-preview-cards box-pattern simple-display story_page" style="background:url(&#039;/sites/default/files/2018-07/assembly-crab-cavity.jpg&#039;) no-repeat center center / cover" data-background="/sites/default/files/2018-07/assembly-crab-cavity.jpg" class="component-preview-cards box-pattern simple-display story_page" style="background-color: #0855A0"> <a class="box-link" target="" href="/science/accelerators/high-luminosity-lhc/technologies"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/science/accelerators/high-luminosity-lhc/technologies" title="Technologies"> <span style="color:"> Technologies </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> <div id="preview-card--5" class="component-preview-cards box-pattern simple-display story_page" style="background:url(&#039;//cds.cern.ch/images/CERN-PHOTO-202105-067-6/file?size=medium&#039;) no-repeat center center / cover" data-background="//cds.cern.ch/images/CERN-PHOTO-202105-067-6/file?size=medium" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/science/accelerators/high-luminosity-lhc/civil-engineering"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/science/accelerators/high-luminosity-lhc/civil-engineering" title="Civil engineering"> <span style="color:"> Civil engineering </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> <div id="preview-card--6" class="component-preview-cards box-pattern simple-display story_page" style="background:url(&#039;//cds.cern.ch/images/CERN-PHOTO-201609-250-2/file?size=medium&#039;) no-repeat center center / cover" data-background="//cds.cern.ch/images/CERN-PHOTO-201609-250-2/file?size=medium" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/resources/faqs/high-luminosity-lhc"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/resources/faqs/high-luminosity-lhc" title="High-Luminosity LHC in a nutshell"> <span style="color:"> High-Luminosity LHC in a nutshell </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </main> <footer role="contentinfo"> <div class="row cern-footer"> <div class="col-xs-12 col-sm-4 col-md-4 col-lg-4 footer-first-col"> <div class="region region-footercolumn1"> <section id="block-followus" class="block block-block-content block-block-content6d2579e3-b650-496f-b854-0c744e176f43 clearfix"> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-full ds-1col clearfix"> <div class="field field--name-field-visible-title field--type-string field--label-hidden field--item"> <p>Follow Us</p> </div> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p style="font-size:36px; 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