Publications by Albert Perez | EPFL Graph Search

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

Konstantin Androsov, Varun Sharma, Xin Chen, Rakesh Chawla, Werner Lustermann, Andromachi Tsirou, Alexis Kalogeropoulos, Andrea Rizzi, Thomas Muller, David Vannerom

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

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

Simone Scarfì, Varun Sharma, Konstantin Androsov, Xin Chen, Rakesh Chawla, Werner Lustermann, Andromachi Tsirou, Alexis Kalogeropoulos, Andrea Rizzi, Thomas Muller

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

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

Simone Scarfì, Qian Wang, Varun Sharma, Konstantin Androsov, Xin Chen, Rakesh Chawla, Tian Cheng, Werner Lustermann, Andromachi Tsirou, Andrea Rizzi

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

The CMS Phase-1 pixel detector upgrade

Simone Scarfì, Qian Wang, Varun Sharma, Konstantin Androsov, Xin Chen, Rakesh Chawla, Tian Cheng, Werner Lustermann, Andromachi Tsirou, Andrea Rizzi

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

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

Qian Wang, Simone Scarfì, Varun Sharma, Konstantin Androsov, Xin Chen, Tian Cheng, Werner Lustermann, Andromachi Tsirou, Andrea Rizzi, David Vannerom

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

Enhanced operation of the Eu Ec test facility

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

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

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

Qian Wang, Simone Scarfì, Varun Sharma, Chia-Chun Chen, Konstantin Androsov, Xin Chen, Tian Cheng, Werner Lustermann, Andromachi Tsirou, Andrea Rizzi

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

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

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

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

Neutral beam heating on the TCV tokamak

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Yves Martin, René Chavan, Alexander Karpushov, Damien Fasel, Antoine Pierre Emmanuel Alexis Merle, Xavier Llobet

2017