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Upcoming events at the Large Hadron Collider and National Ignition Facility

Published online by Cambridge University Press:  17 August 2009

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Type
Editorial from the Editor-in-Chief
Information
Laser and Particle Beams , Volume 27 , Issue 3 , September 2009 , pp. 363 - 364
Copyright
Copyright © Cambridge University Press 2009

The scientific community is looking forward to major events this autumn, the restart of the Large Hadron Collider at CERN and the start of the National Ignition Campaign at Lawrence Livermore Laboratory.

Last year the Large Hadron Collider (LHC) was completed in a circular tunnel of 27 km in circumference, which is underground at a depth between some 50 to 175 m. The first beams were circulated successfully on 10 September 2008 but unfortunately, only a short time later, a serious fault developed and subsequently damaged superconducting magnets in one-quarter of the underground tunnel. The repair required a long technical intervention and an extended shutdown. A restart of the system is planned for September 2009. The LHC is a very complex instrument designed to reveal the secrecies of matter and to probe structures as small as 10−19 m at particle energies of 10 TeV. Particle physics may not seem related to topics usually reported in our journal, however petawatt laser pulses of picosecond duration may eventually be a part of a diagnostic system to detect creation and decay processes of B-mesons in the LHC (Hora & Hoffmann, Reference Hora and Hoffmann2008). The high beam intensity of the LHC however triggers the question of beam losses in high intensity particle accelerators in general (Mustafin et al., Reference Mustafin, Boine-Frankenheim, Hofmann and Spiller2002), and associated problems of induced radioactivity (Fertman et al., Reference Fertman, Bakhmetjev, Batyaev, Borisenko, Cherkasov, Golubev, Kantsyrev, Karpikhin, Koldobsky, Lipatov, Mulambetov, Mulambetova, Nekrasov, Prokouronov, Roudskoy, Sharkov, Smirnov, Titarenko, Turtikov, Zhivun, Fehrenbacher, Hasse, Hoffmann, Hofmann, Mustafin, Weyrich, Wieser, Mashnik, Barashenkov and Gudima2002), and the safety of operation with ultraintense particle beams, which is a very important issue that needs to be addressed carefully (Tahir et al., Reference Tahir, Schmidt, Brugger, Assmann, Shutov, Lomonosov, Piriz, Hoffmann, Deutsch and Fortov2008, Reference Tahir, Schmidt, Brugger, Lomonosov, Shutov, Piriz, Udrea, Hoffmann and Deutsch2007).

The development of, the National Ignition Facility Laser at Lawrence Livermore National Laboratory, however is something that is right at the center of the interest of Laser and Particle Beams readers and authors. Here we witnessed a major event already in March of this year, when, NIF became the world's first fusion laser facility to break the one-megajoule barrier. NIF's 192 laser beams delivered 1.1 million joules (MJ) of ultraviolet energy to the center of its 10-meter-diameter target chamber. The accomplishment came less than two weeks after NIF first fired all 192 of its laser beams to target chamber center. During the upcoming Inertial Fusion Science and Application conference ((IFSA, 6–11 September 2009), the development at NIF will be discussed in great detail and we will soon see the start of a series of experiments toward the ignition of a fusion target (Aleksandrova et al., Reference Aleksandrova, Belolipetskiy, Koresheva and Tolokonnikov2008; Borisenko et al., Reference Borisenko, Bugrov, Burdonskiy, Fasakhov, Gavrilov, Goltsov, Gromov, Khalenkov, Kovalskii, Merkuliev, Petryakov, Putilin, Yankovskii and Zhuzhukalo2008; Chatain et al., Reference Chatain, Perin, Bonnay, Bouleau, Chichoux, Communal, Manzagol, Viargues, Brisset, Lamaison and Paquignon2008; Cook et al., Reference Cook, Kozioziemski, Nikroo, Wilkens, Bhandarkar, Forsman, Haan, Hoppe, Huang, Mapoles, Moody, Sater, Seugling, Stephens, Takagi and Xu2008; Imasaki & Li, Reference Imasaki and Li2009; Manheimer & Colombant, Reference Manheimer and Colombant2007; Seifter et al., Reference Seifter, Kyrala, Goldman, Hoffman, Kline and Batha2009; Strangio et al., Reference Strangio, Caruso and Aglione2009).

In September, there is also the 13th Conference on the Physics of Non-ideal Plasmas, (PNP 13 — Chernogolovka, 13–18 September 2009). This conference continues a traditional series of meetings devoted to new theoretical and experimental results on the physics of dense non-ideal plasmas, and many of our readers, interested in dense plasma phenomena will attend this conference. In dense systems, collisions and interactions among constituents are of primary importance for the properties of the sample. Due to the high density new diagnostic tools are necessary, among them X-ray Thomson scattering (Fortmann et al., Reference Fortmann, Bornath, Redmer, Reinholz, Ropke, Schwarz and Thiele2009), and energy loss of charged particles (Li et al., Reference Li, Shen, Zhang, Jin and Wang2008; Nardi et al., Reference Nardi, Maron and Hoffmann2007).

References

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