Geneva University
École de physique - Département de physique nucléaire et corpusculaire
24, quai Ernest-Ansermet
1211 GENÈVE 4
Tél: (022) 379 62 73 - Fax: (022) 379 69 92
Wednesday 17 June 2009
PARTICLE PHYSICS SEMINAR
at 17.00 hrs – Stückelberg Auditorium
Long baseline neutrino detectors for T2KK: Water Cherenkov versus Liquid Argon
by Dr Fanny Dufour, Université de Genève
In this talk, I will present two proposals of long baseline neutrino experiments that are currently being investigated for the Tokai to Kamioka and Korea setup. The assumed neutrino beam is a 1.66 MW beam coming from the Tokai accelerator and providing 2.6 * 1021 protons on target per year. Two different detector technologies have been proposed to study this beam.
Either water Cherenkov, or liquid Argon, I will present a comparison of the assumptions and expectations from these two proposals.
Information : http://dpnc.unige.ch/seminaire/annonce.html
Organizer: J.-S. Graulich
Friday 19 June 2009
MARTIN PETER COLLOQUIUM
at 16:00 – A Auditorium, École de physique
Extraordinary Advances on Photoemission Experiments
Professeur Zhi-Xun Shen
Departments of Physics and Applied Physics, Stanford University and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
Photoelectric effect and the Einstein’s light quanta interpretation have significantly influenced modern physics and the technologies that follow – ranging from the foundation of quantum mechanics to modern solar cells and photocathodes.
Due to its high quantum efficiency, spectroscopy based on the photoelectric effect has become an important tool for modern materials sciences. With much improved resolution and well matched experiments over the last two decades, angle-resolved photoemission spectroscopy (ARPES) has emerged as one of the most important techniques for condensed matter physics. The power of ARPES stems from the direct way it measures the electronic structure by providing the critical energy and momentum relationships of the excitations, and its intimate link to a fundamental microscopic quantity – the single particle Green’s function. Photoemission has been at the focal point of debates on some of the deepest questions of quantum physics.
In this talk, we will present recent results from novel quantum matter to illustrate the progress. The focus will be the cuprate, the new Fe based superconductors and topological insulators. If time permits, we will discuss the prospects and strategies to go beyond what is currently possible - ARPES with high spatial resolution ("nano"-ARPES), with time resolution (tr-ARPES) and with spin resolution (spin-ARPES).
Organizer : Prof. Dirk Van der Marel