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Concept

Fermilab

Publications associées (20)

Muon Collider Forum report

João Miguel das Neves Duarte, Andrea Wulzer, Théodora Cohen Liechti, Christoph Herwig

A multi-TeV muon collider offers a spectacular opportunity in the direct exploration of the energy frontier. Offering a combination of unprecedented energy collisions in a comparatively clean leptonic environment, a high energy muon collider has the unique ...

Iop Publishing Ltd2024

Optimizing Dynamic Aperture Studies with Active Learning

Tatiana Pieloni, Mike Seidel, Davide Di Croce, Ekaterina Krymova

Dynamic aperture is an important concept for the study of non-linear beam dynamics in circular accelerators. It describes the extent of the phase-space region where a particle's motion remains bounded over a given number of turns. Understanding the feature ...

Iop Publishing Ltd2024

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

Preliminary safety analysis of the TRANSMUTEX sub-critical reactor using the GeN-Foam multi-physics solver

Andreas Pautz, Carlo Fiorina, Thomas Arthur Louis Joseph Guilbaud

This work presents a preliminary safety analysis of the accelerator-driven system under development at TRANSMUTEX. It is a sub-critical lead-cooled fast reactor with a nominal power of 300 MWth having the following features: (1) an inert-matrix fuel; (2) a ...

Pergamon-Elsevier Science Ltd2023

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

Electron Spin Resonance Magnetometers for Particle Accelerators

Anthony Jean Beaumont

CERN is the European Organization for Nuclear Research located in Geneva, Switzerland. Its main goal is to explore fundamental physics and it exists primarily to provide physicists the necessary tools for doing this, namely accelerators. These tools bring ...

EPFL2020

The experimental facility for the Search for Hidden Particles at the CERN SPS

Lesya Shchutska, Aurelio Bay, Ekaterina Kuznetsova, Guido Haefeli, Sun Hee Kim, Elena Graverini, Federico Leo Redi, Maria Elena Stramaglia, Ana Bárbara Rodrigues Cavalcante, Mikhail Chapochnikov, Alexey Boyarsky, Oleg Ruchayskiy, Nikolaos Charitonidis, Inar Timiryasov, Alexandre Emmanuel Grandchamp, Jean-Loup Tastet

The Search for Hidden Particles (SHiP) Collaboration has shown that the CERN SPS accelerator with its 400 GeV/c proton beam offers a unique opportunity to explore the Hidden Sector [1-3]. The proposed experiment is an intensity frontier experiment which is ...

2019

Optimization of the Beam Screen for the FCC Injection Kicker Magnets

Agnieszka Chmielinska

The Future Circular Collider for hadrons (FCC-hh) is a proposed high-energy frontier particle accelerator, which would be built in a new ~100 km circumference tunnel and would enable proton-proton collisions at a centre-of-mass energy of 100 TeV. The basel ...

EPFL2019

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

A novel approach to Landau damping of transverse collective instabilities in future hadron colliders

Michael Schenk

Transverse collective instabilities induced by the beam-coupling impedance of the accelerator structure lead to beam quality degradation and pose a major limitation to the machine performance. Landau damping, a powerful stabilising mechanism that can be em ...

EPFL2019

High-gradient and high-efficiency linear accelerators for hadron therapy

Stefano Benedetti

Hadron beams - approximately 200 MeV protons and 400 MeV/u fully stripped carbon ions - are better suited to treat deep-seated tumours than X ray beams - produced by electrons accelerated by linear accelerators (linacs) to 5-25 MeV - because they leave the ...

EPFL2018

Higher brightness beams from the SPS for the HL-LHC era

Francesco Maria Velotti

The need to push the LHC beyond its limits and increase the deliverable luminosity to the experiments by about one order of magnitude has driven the ongoing injector and HL-LHC upgrades. The higher luminosity requires to increase the beam brightness, which ...

EPFL2017

The new versatile general purpose surface-muon instrument (GPS) based on silicon photomultipliers for μSR measurements on a continuous-wave beam

Kamil Sedlák

We report on the design and commissioning of a new spectrometer for muon-spin relaxation/rotation studies installed at the Swiss Muon Source (SμS) of the Paul Scherrer Institute (PSI, Switzerland). This new instrument is essentially a new design and replac ...

2017

The LHCb Turbo stream

The LHCb experiment will record an unprecedented dataset of beauty and charm hadron decays during Run II of the LHC, set to take place between 2015 and 2018. A key computing challenge is to store and process this data, which limits the maximum output rate ...

Elsevier Science Bv2016

Space Charge Effects and Advanced Modelling for CERN Low Energy Machines

Adrian Oeftiger

The strong space charge regime of future operation of CERN's circular particle accelerators is investigated andmitigation strategies are developed in the framework of the present thesis. The intensity upgrade of the injector chain of Large Hadron Collider ...

EPFL2016

Laser arrival measurement tools for SwissFEL

Christoph Peter Hauri

SwissFEL is aiming to produce X-ray pulses from 30 fs down to the attosecond time scale. This requires the compression of the several picosecond long electron bunches produced by a photo-injector to sub-fs level. To achieve this, 40fs accurate injection of ...

Spie-Int Soc Optical Engineering2015

High Intensity Beam Issues in the CERN Proton Synchrotron

Sandra Aumon

This PhD work is about limitations of high intensity proton beams observed in the CERN Proton Synchrotron (PS) and, in particular, about issues at injection and transition energies. With its 53 years, the CERN PS would have to operate beyond the limit of i ...

EPFL2012

Low material budget microfabricated cooling devices for particle detectors and front-end electronics

Philippe Renaud, Harald Van Lintel, Alessandro Mapelli

Novel cooling systems with very low material budget are being fabricated and studied. They consist of silicon wafers in which microchannels are etched and closed by bonding another wafer. This cooling option is being considered for future HEP detectors of ...

2011

First observation of Bs0 -> J/psi f0(980) decays

Jian Wang, Olivier Schneider, Yiming Li, Yi Zhang, Lei Zhang, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Christoph Frei, Mark Tobin, Frédéric Blanc, Minh Tâm Tran, Michel De Cian, Greig Alan Cowan, Vladislav Balagura, Plamen Hristov Hopchev, Frédéric Guillaume Dupertuis, Julien Rouvinet, Christophe Salzmann, Pierre Jaton, Barinjaka Rakotomiaramanana, Joël Bressieux, Raluca Anca Muresan, Johan Luisier, Albert Puig Navarro, Anne Keune, Christophe Bauer, Mathias Oleg Knecht, Neal Gauvin

Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay B-s(0) -> J/psi f(0)(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B? sy ...

2011

Study and Experimental Characterization of a Novel Photo Injector for the CLIC Drive Beam

In this thesis, the transverse and longitudinal beam properties of the PHIN photoinjector are characterized. The objective of the research is to demonstrate the reliable and stable production of a 1.3 µs long bunch train, with 2.33 nC charge per bunch and ...

EPFL2011