<?xml version="1.0" encoding="UTF-8"?>
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    <record>
       <contributors>
          <authors>
             <author>Krupa, M.</author>
             <author>Bett, D.R.</author>
             <author>Degl&#8217;Innocenti, I.</author>
             <author>Gudkov, D.</author>
             <author>Schneider, G.</author>
          </authors>
       </contributors>
       <titles>
          <title>
             HL-LHC BPM System Development Status
          </title>
       </titles>
       <publisher>JACoW Publishing</publisher>
       <pub-location>Geneva, Switzerland</pub-location>
		 <isbn>2673-5350</isbn>
		 <isbn>978-3-95450-241-7</isbn>
		 <electronic-resource-num>10.18429/JACoW-IBIC2022-WEP12</electronic-resource-num>
		 <language>English</language>
		 <pages>408-412</pages>
       <keywords>
          <keyword>cryogenics</keyword>
          <keyword>vacuum</keyword>
          <keyword>pick-up</keyword>
          <keyword>electron</keyword>
          <keyword>electronics</keyword>
       </keywords>
       <work-type>Contribution to a conference proceedings</work-type>
       <dates>
          <year>2022</year>
          <pub-dates>
             <date>2022-12</date>
          </pub-dates>
       </dates>
       <urls>
          <related-urls>
              <url>https://doi.org/10.18429/JACoW-IBIC2022-WEP12</url>
              <url>https://jacow.org/ibic2022/papers/wep12.pdf</url>
          </related-urls>
       </urls>
       <abstract>
          The demanding instrumentation requirements of the future High Luminosity LHC (HL-LHC) require 44 newly designed Beam Position Monitors (BPM) to be installed around the ATLAS and CMS experiments in 2026-2028. Three BPM types are now in pre-series production, with two more variants under design. Close to the collision point, a set of cryogenic directive coupler BPMs equipped with a brand new acquisition system based on nearly-direct digitization will resolve the position of the two counter-rotating LHC beams occupying a common vacuum chamber. Other new button and stripline BPMs will provide not only the transverse beam position, but also timing signals for the experiments, and diagnostics for the new HL-LHC crab cavities. This contribution summarizes the HL-LHC BPM specifications, gives an overview of the new BPM designs, reports on the pre-series BPM production status and plans for series manufacturing, outlines the foreseen acquisition system architecture, and highlights the first beam measurements carried out with the proof-of-concept electronics for the directive stripline BPMs.
       </abstract>
    </record>
  </records>
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