Barbara Warmbein | 18 April 2013A concept to save space and power for future particle detectors called power pulsing has recently been tested and proven to work on one of the possible calorimeter options for the future ILC detectors. The silicon-tungsten electromagnetic calorimeter prototype took data in test beam and magnet at the German lab DESY. The project is currently run by groups from France and Japan.
Category: Around the World | Tagged: CALICE, DESY, detector R&D, electromagnetic calorimeter, France, Japan, power pulsing, test beam
Image: CNRS/Yannick Legré | 31 May 2012For the first time, two internationally associated laboratories, the France-Korea Laboratory for Particle Physics and e-science and the France-Japan Particle Physics Laboratory (renamed Toshiko Yuasa Laboratory), jointly held their annual meeting, providing new opportunities for trilateral collaborations. More than 70 physicists gathered from 28-30 May at the Laboratoire de Physique Corpusculaire, in Clermont-Ferrand, France. Talks included overviews from the directors of KEK, KISTI, CEA/Irfu and CNRS/IN2P3 and a review of the latest results of the collaborative work on particle detector and accelerator R&D, astroparticle and neutrinos and grid computing.
Category: Image of the week | Tagged: France, Japan, Korea, LPC Clermont
28 April 2011Michel Davier receives the 2010 André Lagarrigue Prize from Martial Ducloy, president of the French Physical Society, on 26 April at the Linear Accelerator Laboratory in Orsay, France.
Category: Image of the week | Tagged: France, Lagarrigue Prize, Orsay
Perrine Royole-Degieux | 5 August 2010How do you gather 2,000 Parisians and tourists in the middle of summer to talk about particle physics during a whole night? Probably following this recipe: find a magic venue, invite fascinating speakers and well-known artists, explore the frontier between science and cinema and advertise, advertise, advertise. Well, at least this is how the "Nuit des particules" – Particle Night – organised on 27 July at the Grand Rex theatre in Paris by the International Conference on High Energy Physics (ICHEP2010) this year happened to be a success.
Category: Feature | Tagged: France, ICHEP, outreach, Paris, public event, public lecture
Perrine Royole-Degieux | 5 February 2009Hundreds of millions of channels of electronics: this is about what the electromagnetic calorimeter (ECal) of the CALICE collaboration will have to design, process and analyse. The very high granularity of ILC detector’s future calorimeter will also be reflected in the ambitious first-stage electronics – or very-front-end electronics, which still needs to be designed. One part of the electronic jigsaw is the analogue-to-digital converter (ADC). At LPC, a CNRS/IN2P3 lab in Clermont-Ferrand, France, the latest ADC prototype fulfills the ILC requirements in terms of resolution, compactness, time of conversion and power consumption.
Category: Feature | Tagged: CALICE, CNRS/IN2P3, ECal, France
Perrine Royole-Degieux | 19 July 2007Producing intense polarised positrons for the ILC is very challenging. Stability, energy, luminosity are the key words. Parallel to the baseline studies on a helical undulator-based source (see Newsline from 19 October 2006), other groups, like the laser group at LAL (IN2P3/CNRS), Orsay (France), pursue R&D on a Compton positron source. The Orsay team recently measured an unprecedented enhancement factor of the pulsed laser beam inside their Fabry-Perot cavity. They expect bigger factors in a few months.
Category: Feature | Tagged: France, LAL, positron source
Perrine Royole-Degieux | 10 May 2007Even the best detector will be useless without clever reconstruction algorithms and software. On 2-4 May 2007, the ILC Software Workshop was held at LAL, Orsay (France). The whole chain of data processing was reviewed there: software framework and tools, algorithms and physics results. At the end of the workshop, DESY physicist Ties Behnke summarised that significant progress has been achieved over the past year and important performance milestones are close to being reached, even though the community is still small. Cambridge physicist Mark Thomson, finished his contribution declaring he was now convinced that Particle Flow Algorithm (PFA) can meet the ILC performance goals at 500 GeV and 1 TeV.
Category: Feature | Tagged: France, ILC Software Workshop, LAL, LCIO, software
Perrine Royole-Degieux | 5 April 2007Before accelerating electrons and positrons, cavities need to undergo a number of treatments, such as chemical and electropolishing, the last one being baking. The standard baking procedure heats the cavity at 120°C for two days with an ultra high vacuum (UHV) requirement. These very restrictive conditions are unfortunately not appropriate for the treatment of 16,000 cavities that the ILC requires.
Category: Feature | Tagged: cavity baking, DAPNIA, France, Saclay
Perrine Royole-Degieux | 15 March 2007Last January, engineers from the DAPNIA laboratory in Saclay France qualified a new electropolishing facility for single cell cavities. Their first electropolished cavity reaches a promising result, above 42 MV/m (megavolts per metre) of accelerating gradient. It allows them to join the global R&D effort on these cavity treatments.
Category: Feature | Tagged: accelerating gradient, DAPNIA, France, Saclay
