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Albert Perez

Cette personne a quitté l’EPFL

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Publications associées (27)

Page 1 sur 2

Upgrade of a 30 kV/10 mA anode power supply for triode type gyrotron

Stefano Alberti, Jean-Philippe Hogge, Damien Fasel, Ugo Siravo, Jérémie Dubray, Philippe Marmillod, Albert Perez, Blaise Marlétaz

The RF power of a gyrotron with a triode type magnetron-injection-gun (MIG) can be directly controlled via the voltage applied between its anode and its cathode. Hence, the performance of this type of gyrotron relies directly on the possibilities offered b ...

Elsevier Science Sa2015

Safety factor profile requirements for electron ITB formation in TCV

Olivier Sauter, Stefano Coda, Ambrogio Fasoli, Basil Duval, Henri Weisen, Jonathan Bryan Lister, Timothy Goodman, Richard Pitts, Yves Martin, Stefano Alberti, Yann Camenen, Antoine Pochelon, Jean-Marc Moret, Sun Hee Kim, Minh Quang Tran, Kurt Appert, Roland Behn, Jan Horacek, Jean-Philippe Hogge, René Chavan, Laurie Porte, Mikhail Maslov, Marco Wischmeier, Markus Siegrist, Alexander Karpushov, Alberto Bottino, Damien Fasel, Emiliano Fable, Petri Nikkola, Philippe Marmillod, Costanza Zucca, Gilbert Tonetti, Andrei Martynov, Andrea Scarabosio, Xavier Llobet, Christian Schlatter, Alessandro Bortolon, Albert Perez, Gilles Arnoux, Yanis Andrebe, Blaise Marlétaz, Alessandro Marinoni, Ugo Siravo, Pierre Lavanchy, Igor Klimanov, Barbora Bruant Gulejová, Pierre-François Isoz, Alexey Zabolotskiy, Jonathan Rossel, Emmanuel Droz, Jean-Claude Magnin, Ilya Pavlov, Karin Schombourg, Pierre Etienne

On the Tokamak a Configuration Variable (TCV), electron internal transport barriers (eITBs) can be formed during a gradual evolution from a centrally peaked to a hollow current profile while all external actuators are held constant. The formation occurs ra ...

2005

MAGY: an innovative high voltage - low current power supply for gyrotron

Damien Fasel, Albert Perez, Ugo Siravo, Mauro Carpita

From the electrical point of view, the body and the anode of high power gyrotrons behave as capacitive loads. A highly dynamic power supply is, therefore, hard to achieve. The MAGY concept (Modulator for the Anode of a triode type GYrotron) embodies an inn ...

elsevier2011

Supply equipment to the new NBH system for the TCV tokamak

Alexander Karpushov, Damien Fasel, Ugo Siravo, Jérémie Dubray, Albert Perez

The TCV tokamak is equipped with a high power real time-controllable Electron Cyclotron Heating (ECH) system, made of 9 gyrotrons capable of 500 kW RF power. One of the major scientific challenge, the TCV upgrades aimed to, will be the access to a wider ra ...

Elsevier Science2015

Evaluation of HPK n plus -p planar pixel sensors for the CMS Phase-2 upgrade

Varun Sharma, Alexis Kalogeropoulos, Xin Chen, Rakesh Chawla, Konstantin Androsov, Albert Perez, Alessandro Caratelli

To cope with the challenging environment of the planned high luminosity upgrade of the Large Hadron Collider (HL-LHC), scheduled to start operation in 2029, CMS will replace its entire tracking system. The requirements for the tracker are largely determine ...

Elsevier2023

Enhanced operation of the Eu Ec test facility

Timothy Goodman, Stefano Alberti, Jean-Philippe Hogge, Albert Perez, Damien Fasel, Ugo Siravo, Jérémie Dubray

A Test Facility (TF) has been designed and installed at SPC to allow for the commissioning of the EU gyrotrons developed in view of their integration to the ITER EC system. The first phase of operation of this TF was dedicated to the development of the EU ...

ELSEVIER SCIENCE SA2019

Assessment of the ITER High-Frequency Magnetic Diagnostic Set

Thomas Maeder, Jonathan Bryan Lister, Duccio Testa, Jean-Marc Moret, René Chavan, Francisco Sanchez, Gilbert Tonetti, Albert Perez, Matthieu Toussaint

The ITER high-frequency (HF) magnetic diagnostic system has to provide essential measurements of MHD instabilities with |deltaBmeas/BPOL|~1e-4 (~1G) for frequencies up to 2MHz to resolve toroidal mode numbers (n) in the range |n|=10 to |n|=50. A review of ...

Elsevier2011

First experimental results from the European Union 2 MW coaxial cavity ITER gyrotron prototype

Timothy Goodman, Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Laurie Porte, Damien Fasel, Philippe Marmillod, Ioannis Pagonakis, Albert Perez, Blaise Marlétaz, Ugo Siravo, Pierre Lavanchy, Emmanuel Droz

The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at For ...

American Nuclear Society2009

The DAQ and control system for the CMS Phase-1 pixel detector upgrade

Qian Wang, Varun Sharma, Tian Cheng, Konstantin Androsov, Xin Chen, Davide Di Croce, Albert Perez, Alessandro Caratelli, François Bianchi, Chia-Chun Chen, Simone Scarfì

In 2017 a new pixel detector was installed in the CMS detector. This so-called Phase-1 pixel detector features four barrel layers in the central region and three disks per end in the forward regions. The upgraded pixel detector requires an upgraded data ac ...

2019

Test beam performance of a CBC3-based mini-module for the Phase-2 CMS Outer Tracker before and after neutron irradiation

Varun Sharma, Alexis Kalogeropoulos, Konstantin Androsov, Xin Chen, Rakesh Chawla, Albert Perez, Alessandro Caratelli, François Bianchi, Simone Scarfì

The Large Hadron Collider (LHC) at CERN will undergo major upgrades to increase the instantaneous luminosity up to 5-7.5 x 1034 cm-2s-1. This High Luminosity upgrade of the LHC (HL-LHC) will deliver a total of 3000-4000 fb-1 of proton-proton collisions at ...

2023

Electrical integration of two 1MW/2s dual-frequency gyrotrons into the EC-system of the TCV tokamak

Stefano Alberti, Albert Perez, Damien Fasel, Ugo Siravo, Jérémie Dubray

The electron-cyclotron heating system of the TCV tokamak is being enhanced as part of a major upgrade. Two MW-class dual-frequency gyrotrons will be installed. The first has already been delivered and will be fully commissioned on-site by the end of 2018 w ...

ELSEVIER SCIENCE SA2019

Influence Grinding Procedure, Limestone Content and PSD of Components on Properties of Clinker-Calcined Clay-Limestone Cements Produced by Intergrinding

Karen Scrivener, Albert Perez, Aurélie Rosine Favier

This paper looks at the study of intergrinding for the production of ternary cement based on clinker, calcined clay, limestone and gypsum with 50% of clinker substitution (LC3). The impact of grinding time on clinker, limestone and calcined clay PSD, and h ...

Springer2018

Beam test performance of a prototype module with Short Strip ASICs for the CMS HL-LHC tracker upgrade

Qian Wang, Varun Sharma, Tian Cheng, Konstantin Androsov, Jessica Prisciandaro, Xin Chen, Davide Di Croce, Rakesh Chawla, Albert Perez, Alessandro Caratelli, François Bianchi, Simone Scarfì, Chun Xia

The Short Strip ASIC (SSA) is one of the four front-end chips designed for the upgrade of the CMS Outer Tracker for the High Luminosity LHC. Together with the Macro-Pixel ASIC (MPA) it will instrument modules containing a strip and a macro-pixel sensor sta ...

2022

Assessment of the ITER high-frequency magnetic diagnostic set

Jonathan Bryan Lister, Jean-Marc Moret, Duccio Testa, René Chavan, Thomas Maeder, Gilbert Tonetti, Albert Perez, Francisco Sanchez, Matthieu Toussaint

The ITER high-frequency (HF) magnetic diagnostic system has to provide essential measurements of MHD instabilities with vertical bar delta B-MEAS/B-POL vertical bar similar to 10(-4) (similar to 1 G) for frequencies up to 2 MHz to resolve toroidal mode num ...

Elsevier2011

Beam test performance of prototype silicon detectors for the Outer Tracker for the Phase-2 Upgrade of CMS

Qian Wang, Varun Sharma, Tian Cheng, Konstantin Androsov, Xin Chen, Davide Di Croce, Albert Perez, Alessandro Caratelli, François Bianchi, Simone Scarfì

A new CMS tracker detector will be installed for operation at the High Luminosity LHC (HL-LHC). This detector comprises modules with two closely spaced parallel sensor plates and front-end ASICs capable of transmitting tracking information to the CMS Level ...

2020

5MW CW supply system for the ITER gyrotrons Test Facility

Damien Fasel, Ugo Siravo, Albert Perez

ECH (Electron Cyclotron Heating) for ITER will deliver into the plasma 20 MW of RF power. The procurement of the RF sources will be shared equally between the three following partners: Europe, Japan and Russia. Moreover, Europe decided to develop a RF sour ...

Elsevier2011

The CMS Phase-1 pixel detector upgrade

Qian Wang, Varun Sharma, Tian Cheng, Konstantin Androsov, Jessica Prisciandaro, Xin Chen, Davide Di Croce, Rakesh Chawla, Albert Perez, Alessandro Caratelli, François Bianchi, Simone Scarfì

The CMS detector at the CERN LHC features a silicon pixel detector as its innermost subdetector. The original CMS pixel detector has been replaced with an upgraded pixel system (CMS Phase-1 pixel detector) in the extended year-end technical stop of the LHC ...

2021

Installation and commissionning of the EU test facility for ITER gyrotron

Timothy Goodman, Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Laurie Porte, Damien Fasel, Philippe Marmillod, Xavier Llobet, Albert Perez, Blaise Marlétaz, Ugo Siravo, Emmanuel Droz

2006

The Physics of the B Factories

Jian Wang, Mingkui Wang, Olivier Schneider, Zhirui Xu, Chao Wang, Yiming Li, Varun Sharma, Lei Zhang, Yixing Chen, Yi Wang, Aurelio Bay, Ho Ling Li, Frédéric Blanc, Maurizio Martinelli, Vladislav Balagura, Stewart Cole, Liang Sun, Xin Chen, Jean Wicht, Sun Hee Kim, Songmei Wu, Jun Yong Kim, Junqiu Liu, Greig Alan Cowan, Remi Léandre Albert Louvot, Albert Perez, Doohyun Kim, Yuan Yuan, Martin George Friedl, Yan Yan, Fang Liu, Guillaume Wagner, François Bianchi, Bingqing Cheng, Patricia Besson, Jérôme Krebs, Hideki Konishi, Marc Kunze, Christian Jacoby

Springer2014

The Magnetic Diagnostic Set for ITER

Thomas Maeder, Jonathan Bryan Lister, Duccio Testa, Jean-Marc Moret, René Chavan, Francisco Sanchez, Gilbert Tonetti, Albert Perez, Matthieu Toussaint

2010