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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Dear LCLS-II Team,</span>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">LCLS-II has just successfully reached another milestone in its commissioning. This was achieved thanks to all your hard work, and it reflects the quality of work done
at JLab. <br>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Great job, everyone!</span><br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Katherine Wilson <kwilson@jlab.org><br>
<b>Sent:</b> Sunday, July 10, 2022 12:13 PM<br>
<b>To:</b> Christine Fragapane <chummel@jlab.org><br>
<b>Cc:</b> Ed Daly <edaly@jlab.org>; Naeem Huque <huque@jlab.org><br>
<b>Subject:</b> Fw: Achievement of 4 GV Stable Voltage</font>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Gonnella, Dan A <gonnella@slac.stanford.edu><br>
<b>Sent:</b> Friday, July 8, 2022 11:10 PM<br>
<b>To:</b> Holtkamp, Norbert <norbert.holtkamp@slac.stanford.edu>; Burrill, Andrew B. <aburrill@slac.stanford.edu>; Cardoso, Jacki <jcardoso@slac.stanford.edu>; Rowen, Michael <rowen@slac.stanford.edu>; Fuerst, Joel <fuerst@anl.gov>; Hays, Greg <haysgr@slac.stanford.edu>;
Ross, Marc C. <mcrec@slac.stanford.edu>; Fitzpatrick, Jarrod <jarrod@slac.stanford.edu>; Katherine Wilson <kwilson@jlab.org>; Ed Daly <edaly@jlab.org>; Joe Preble <preble@jlab.org>; Fauve, Eric A <efauve@slac.stanford.edu>; Ravindranath, Viswanath <vishy@slac.stanford.edu>;
Pflueckhahn, Dirk <dirkp@slac.stanford.edu>; Anna Grassellino <annag@fnal.gov>; Checchin, Mattia <mattiac@slac.stanford.edu>; Martina Martinello <mmartine@fnal.gov>; Ari Palczewski <adpalczewsk@gmail.com>; Charlie Reece <reece@jlab.org>; Matthias Ulf Liepe
<mul2@cornell.edu>; Tug T Arkan <arkan@fnal.gov>; Richard P Stanek <rstanek@fnal.gov>; Hiatt, Tommy <hiatt@slac.stanford.edu>; Michael Drury <drury@jlab.org>; Elvin R Harms Jr <harms@fnal.gov>; Wilson, Andrew <andreww@slac.stanford.edu>; Shrishrimal, Swapnil
R. <swapnil@slac.stanford.edu>; Apte, Akanksha <akapte@slac.stanford.edu>; Coy, Robert <rcoy@slac.stanford.edu>; White, Dominique A <dwhite@slac.stanford.edu>; Young, Lydia J <ljyoung@slac.stanford.edu>; Poliak, Rich <rpoliak@slac.stanford.edu>; Peterson,
Thomas J <tjpete@slac.stanford.edu>; Klebaner, Arkadiy L <klebaner@slac.stanford.edu>; Heloin, Vincent <vincenth@slac.stanford.edu>; Benwell, Andy <abenwell@slac.stanford.edu>; Hoobler, Sonya <sonya@slac.stanford.edu>; Chen, Jing X <jxcchen@slac.stanford.edu>;
Estrada, Laura <lnb@slac.stanford.edu>; DeBarger, Scott <debarger@slac.stanford.edu><br>
<b>Cc:</b> Andrew T. Cravatta <cravatta@fnal.gov>; Sam Posen <sposen@fnal.gov>; Jeremiah Holzbauer <jeremiah@fnal.gov>; Neil Anthony Stilin <nas97@cornell.edu>; Gaitan, Gabriel <IMCEAEX-_o=ExchangeLabs_ou=Exchange+20Administrative+20Group+20+28FYDIBOHF23SPDLT+29_cn=Recipients_cn=c39348ee2ac9477191cb470a5f179da2-gabrielg@namprd07.prod.outlook.com>;
Diaz-Cruz, Jorge Alberto <dejorge@slac.stanford.edu>; Porter, Ryan Douglas <rdporter@slac.stanford.edu>; Aderhold, Sebastian C. <aderhold@slac.stanford.edu>; Nelson, Janice L. <jnelson@slac.stanford.edu>; Zacarias, Lisa M <zacarias@slac.stanford.edu>; Maniscalco,
James <jamesm@slac.stanford.edu>; Roger Ruber <ruber@jlab.org>; Dunham, Bruce M. <dunham@slac.stanford.edu>; Brachmann, Axel <brachman@slac.stanford.edu>; Ding, Yuantao <ding@slac.stanford.edu>; Zhou, Feng <zhoufeng@slac.stanford.edu>; gianluca.martino@desy.de
<gianluca.martino@desy.de>; Julien Branlard <julien.branlard@desy.de>; andrea.bellandi@desy.de <andrea.bellandi@desy.de><br>
<b>Subject:</b> [EXTERNAL] Achievement of 4 GV Stable Voltage</font>
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All,</p>
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Yesterday, the LCLS-II SRF team exceeded 4 GV of total stable voltage on the installed cavities (operated independently and without beam). While there is still much work to go, including a few more CMs to commission and demonstration with beam,
<b>this is a tremendous achievement and marks a great success for the LCLS-II collaboration.</b> It certainly could not have been done without the FNAL and JLab teams that built great cryomodules for us, the SLAC installation team, and the commissioning team
which consists of experts from SLAC, FNAL, JLab, and Cornell. </p>
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I am extremely happy that we have reached this point, and still have a few more CMs to go to build a nice buffer! For me, this is a culmination of work on nitrogen-doped cavities that goes back to my time at Cornell working on the original LCLS-II high Q R&D
program. Next up: the fast cool down to show that we can achieve high Q in the linac!</p>
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Thanks for all of your help to get to this point and looking forward to continued success,</p>
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Dan</p>
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P.S. Please feel free to forward this message to anyone I may have missed.</p>
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Dan Gonnella</p>
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SRF Group Leader</p>
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SLAC National Accelerator Laboratory</p>
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Bldg. 52, Rm. 247</p>
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Work: (650) 926-5554</p>
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Cell: (585) 615-0018</p>
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