<?xml version="1.0" encoding="UTF-8"?> <rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/"> <channel> <title>CERN Document Server</title> <link>https://cds.cern.ch</link> <description>CERN Document Server latest documents</description> <language>en</language> <pubDate>Wed, 27 Nov 2024 16:05:43 GMT</pubDate> <category></category> <generator>Invenio 1.1.3.1106-62468</generator> <ttl>360</ttl> <atom:link rel="self" href="/rss?f=author&amp;ln=hr&amp;p=Dr++Schirm%2C+Karl-Martin" /> <opensearch:totalResults>3</opensearch:totalResults> <opensearch:startIndex>1</opensearch:startIndex> <opensearch:itemsPerPage>25</opensearch:itemsPerPage> <image> <url>https://cds.cern.ch/img/site_logo_rss.png</url> <title>CERN Document Server</title> <link>https://cds.cern.ch</link> </image> <atom:link rel="search" href="https://cds.cern.ch/opensearchdescription" type="application/opensearchdescription+xml" title="Content Search" /> <textInput> <title>Search </title> <description>Search this site:</description> <name>p</name> <link>https://cds.cern.ch/search</link> </textInput> <item> <title>Lessons learned from the HIE-Isolde cavity production and cryomodule commissioning</title> <link>https://cds.cern.ch/record/2673548</link> <description>The HIE-ISOLDE superconducting linac started opera- tions at CERN in 2015 with a first cryomodule hosting five superconducting quarter wave resonators (QWR). These cavities are based on the Nb/Cu technology. In time, two more cryomodules have been assembled, installed and commissioned on line, bringing the energy reach for the heaviest ions (A/q=4.5) up to 7.5 MeV/u. In 2017, while the first three cryomodules were prepared for the physics run, six more cavities were produced of which five will be installed in a fourth cryomodule. With this, the high beta section of the linac will be complete and the energy will reach 10 MeV/u for A/q=4.5. In this paper we review the experience and lessons learned during the construction of HIE-ISOLDE, along with some still open questions.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Venturini Delsolaro, Walter</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Artoos, Kurt</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Capatina, Ofelia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dr Schirm, Karl-Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kadi, Yacine</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Leclercq, Yann</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Miyazaki, Akira</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Montesinos, Eric</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Parma, Vittorio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rosaz, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sublet, Alban</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Teixeira Lopez, Silvia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Therasse, Mathieu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Williams, Lloyd</dc:creator> <pubDate>Tue, 07 May 2019 05:00:07 GMT</pubDate> <guid>https://cds.cern.ch/record/2673548</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2673548/files/tuxaa02.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>PERLE - Lattice Design and Beam Dynamics Studies</title> <link>https://cds.cern.ch/record/2646051</link> <description>PERLE (Powerful ERL for Experiments) is a novel ERL test facility, initially proposed to validate choices for a 60 GeV ERL foreseen in the design of the LHeC and the FCC-eh. Its main thrust is to probe high current, CW, multi-pass operation with superconducting cavities at 802 MHz (and perhaps testing other frequencies of interest). With very high virtual beam power (~ 10 MW), PERLE offers an opportunity for controllable study of every beam dynamic effect of interest in the next generation of ERL design; becoming a ‘stepping stone' between present state-of-art 1 MW ERLs and future 100 MW scale applications. PERLE design features Flexible Momentum Compaction lattice architecture for six vertically stacked return arcs and a high-current, 6 MeV, photo-injector. With only one pair of 4 cavity cryomodules, 400 MeV beam energy can be reached in 3 re-circulation passes, with beam currents in excess of 15 mA. The beam is decelerated in 3 consecutive passes back to the injection energy, transferring virtually stored energy back to the RF. This unique facility will serve as a test-bed for high current ERL technologies, as well as a user facility in low energy electron and photon physics.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bogacz, Alex</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Angal-Kalinin, Deepa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Arduini, Gianluigi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bousson, Sébastien</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brüning, Oliver</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Calaga, Rama</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chaikovska, Iryna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Douglas, David</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dr Schirm, Karl-Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gerigk, Frank</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hannon, Fay</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Holzer, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hounsell, Benjamin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hutton, Andrew</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Jensen, Erk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kaabi, Walid</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Klein, Max</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Klein, Uta</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kostka, Peter</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Levichev, Evgeny</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Longuevergne, David</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marhauser, Frank</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">McKenzie, Julian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Milanese, Attilio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Militsyn, Boris</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Montesinos, Eric</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Olivier, Gilles</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Olry, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pellegrini, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pupkov, Yuriy</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rimmer, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Roblin, Yves</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stocchi, Achille</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tennant, Chris</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Thonet, Pierre-Alexandre</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vallerand, Cynthia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Valloni, Alessandra</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welsch, Carsten</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Williams, Peter</dc:creator> <pubDate>Tue, 06 Nov 2018 05:56:36 GMT</pubDate> <guid>https://cds.cern.ch/record/2646051</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2646051/files/thpmk105.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>First RF Performance Results for the DQW Crab Cavities to be Tested in the CERN SPS</title> <link>https://cds.cern.ch/record/2289122</link> <description>As part of the High Luminosity LHC (HL-LHC) project strategy, crab cavity correctors shall be installed around CMS and ATLAS experiments of the LHC. To accommodate the different crossing angle planes, two distinct cavity designs have been selected: the RF Dipole (RFD) and the Double Quarter Wave resonator (DQW). CERN has fabricated two double quarter wave resonators (DQW_{S}PS), for validation with a proton beam at the CERN SPS accelerator. Standard superconducting rf surface preparation protocols have been applied to the two bulk niobium cavities, followed by cryogenic testing in a vertical cryostat at CERN's SM18 facility. The performance results obtained after the first bare cavity tests for cavities DQW_{S}PS₀01 and DQW_{S}PS₀02 are shown in this paper, and include Q0 vs Vt curves, Lorentz Force Detuning (LFD) analyses and pressure sensitivity of a higher order mode.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Castilla, Alejandro</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ben-Zvi, Ilan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Burt, Graeme</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Calaga, Rama</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Capatina, Ofelia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dr Schirm, Karl-Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hernández-Chahín, Karim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Macpherson, Alick</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mitchell, James</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shipman, Nicholas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Turaj, Katarzyna</dc:creator> <pubDate>Sat, 14 Oct 2017 04:11:19 GMT</pubDate> <guid>https://cds.cern.ch/record/2289122</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2289122/files/mopva095.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> </channel> </rss>