HIP NEWS May 12th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 13 May 2014 at 10.15 in A315:
Marco Panero (Madrid)
Real-time dynamics from a Euclidean lattice: The physics of jet quenching in high-temperature QCD
Abstract: When the “fireball” of deconfined quark-gluon plasma (QGP) created in a heavy-ion collision expands and cools down, it produces hadronic jets with very striking features, including the suppression of large transverse momenta and of correlations between back-to-back particles. These effects are generically referred to as “jet quenching”, and give important information about the QGP: they indicate that, when a hard parton propagates through the deconfined medium, it undergoes multiple interactions with the plasma constituents, which lead to energy loss and momentum broadening. A theoretical study of this process is particularly difficult, because it involves both perturbative and non-perturbative physics. In addition, the dynamical, real-time nature of the phenomenon hinders a direct approach based on numerical simulation on a lattice. In this talk, however, it will be shown how one can tackle the problem, combining the lattice approach with ideas related to dimensional reduction in high-temperature QCD.
Wednesday 14 May 2014 at 10.15 in A315
Peter Dendooven (Groningen)
Proton therapy research at KVI-Center for Advanced Radiation Technology
Abstract: In cancer treatment, proton beam radiotherapy exploits the highly localized dose deposition of protons to minimize the dose delivered to healthy tissue surrounding a tumor. As a result, collateral damage to healthy tissue is less compared to photon radiotherapy: complications are reduced and the patient’s quality of life after treatment is improved. However, the more precise irradiation possible with protons means an irradiation with protons is less forgiving with respect to dose delivery errors such as proton range uncertainties, patient mispositioning and anatomical changes in the patient during the course of treatment. At KVI Center for Advanced Radiation Technology of the University of Groningen, we investigate several issues aiming at improved proton radiotherapy. Better knowledge of the patient in terms of proton stopping power by making use of dual-energy CT images and proton radiography is investigated. The clinical implementation of in-vivo dose delivery verification by imaging secondary radiation produced by the proton beam as part of quality assurance is being studied. Also, a better primary proton dose standard in terms of heat deposit in water is investigated. An overview of our proton-therapy related research, with some emphasis on in-vivo dose delivery verification will be presented.
COSMO-Seminar
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May 14 (Wed) at 14:15 in A315
David Mulryne (Queen Mary, London)
TBA
Visitors
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P. Dendooven 12.5. – 14.5. (PE, JÄ)
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
B. Mukhopadhyaya 14.5. – 19.5. (KH)
D. Mulryne 16.4. – 16.5. (SN)
M. Panero 12.5. – 18.5. (AV)