Curiculum Vitae & Publications
Benjamin Bradu
CERN, European Organisation for Nuclear Research, Geneva, Switzerland.
Technology department, Cryogenic group (TE/CRG).
My Linkdin Profile
Work Experience
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Since 2024 : Section leader of LHC, ATLAS, CMS cryogenic operation at CERN
Operation of the cryogenic systems and infrastructure of the LHC accelerator and detectors.
Functional analysis follow-up and upgrade of the LHC accelerator and detectors cryogenic systems.
Follow-up and upgrade of the cryogenic process operation simulator.
Supervision of maintenance inspection tasks.
Consultancy and projects in refrigeration process for large cryogenic systems.
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2006 : Final Year Project at the
Systems Engineering and Automatic Control laboratory, Valladolid university,
Spain.
Model Predictive Control and Optimisation of a distillation column in petroleum industry
Education
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2010 :
PhD in
Physics, Université
de Paris-Sud XI, Laboratoire des Signaux et Systèmes (CNRS-Supélec).
==> Laureate of the
best thesis price of
GdR MACS 2011 (CNRS research group in Modelling, Analysis and dynamic systems management)
-
2006 : Master Degree in Sciences and
Technologies, Université Technologique de Compiègne (UTC).
-
2006 : Engineer in Power Electric Systems,
Ecole Supérieure d'Ingénieurs en Electrotechnique et Electronique
d'Amiens (ESIEE).
Publications in Journals
- B. Bradu. Dynamic simulations of the HL-LHC cryogenic system during beam operation. Cryogenics, 113, 2021.
->See CERN-ACC-NOTE-2020-0060 for a more detailled version of the paper.
- B. Bradu, P. Gayet, E. Blanco.Example of cryogenic process simulation using EcosimPro: LHC beam screen cooling circuits
. Cryogenics, 53:45-50, 2013.
- B. Bradu, P. Gayet, S.I. Niculescu, E. Witrant.Modeling
of the very low pressure helium flow in the LHC Cryogenic Distribution Line after a quench. Cryogenics, 50:2:71-77, 2012.
- B. Bradu, P. Gayet, S.I. Niculescu.
A process and control simulator for large scale cryogenic plants. Control Engineering Practice, 17:1388-1397, 2009.
- B. Bradu, A. Moraux, M. Pezzetti.Modelisation,
simulation et controle des installations cryogeniques du CERN. Revue de l'Electricite et d'Electronique, 4:82-87, 2008.
Conferences (as first author)
- B. Bradu, G. Ferlin.
LHC cryogenics and helium management in case of a major power outage.
In Proceedings of the 29th International Cryogenic Engineering Conference, Geneva, Switzerland, 2024.
- B. Bradu.
The CERN Cryogenic Simulation Lab: a great support for the operators training.
Cryogenic Operations Conference, Grenoble, France, 2024.
- B. Bradu, K. Brodzinski, G. Ferlin, V. Gahier.LHC low beta quadrupole magnets: cryogenic refrigeration capacity and improved controls for luminosity optimization.
In Proceedings of International Particle Accelerator Conference, Venezia, Italia 2023.
- B. Bradu, K. Brodzinski, G. Ferlin, M. Pezzetti, A. Tovar.
Automatic LHC accelerator warm-up and cool-down experience during the Long Shutdown 2.
In Proceedings of the Cryogenic Engineering Conference 21, USA, 2021.
- B. Bradu, K. Brodzinski, J. Casas-Cubillos, D. Delikaris, J.B Deschamps, S. Le Naour, M. Pezzetti, L. Tavian, A. Tovar, M. Sisti, J.Ph. Tock, N. Vauthier.
Beam induced heat load instrumentation installed in LHC during the Long Shutdown 2.
In Proceedings of the Cryogenic Engineering Conference 21, USA, 2021.
- B. Bradu, H. Coppier, J. Gery, M. Pezzetti, A. Tovar.
Liquid helium level regulation improvement in the LHC electrical distribution feedboxes.
In Proceedings of the Cryogenic Engineering Conference 21, USA, 2021.
- B. Bradu, K. Brodzinski, G. Ferlin.
Cryogenic management of the LHC run 2 dynamic heat loads. In Proceedings of the Cryogenic Engineering Conference, Hartford, USA, 2019.
- B. Bradu, K. Brodzinski, G. Ferlin.
How does a cryogenic system cope with e-cloud induced heat load ?. In Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, Isola d'Elba, Italy, 2023.
- B. Bradu, K. Brodzinski, D. Delikaris, C. Garion, L. Tavian.
Heat load profile estimates on LHC beam screens by thermal transient analysis. In Proceedings of 27th International Cryogenic
Engineering Conference, Oxford, United Kingdom, 2018.
- B. Bradu, E. Blanco Vinuela, R. Marti, F. Tilaro.
Automatic PID performance monitoring applied to LHC cryogenics. In Proceedings of the 14th International Conference on
Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 2017.
- B. Bradu, E. Rogez, G. Iadarola, E. Blanco, G. Ferlin, A. Tovar-Gonzalez, B. Fernandez Adiego, P. Plutecki.
Compensation of beam induced effects in LHC cryogenic systems. In Proceedings of 7th International Particle Accelerator
Conference, Busan, South Korea, 2016.
- B. Bradu, E. Rogez, E. Blanco, G. Ferlin, A. Tovar-Gonzalez .
Beam screen cryogenic control improvements for the LHC run 2. In Proceedings of 26th International Cryogenic
Engineering Conference, New-Delhi, India, 2016.
- B. Bradu, E. Blanco, W. Booth, L. Gomez, M. Quilichini, D. Willeman .
Re-Engineering control systems using automatic generation tools and process simulation: the LHC water cooling case.
In Proceedings of the 14th International Conference on Accelerator and Large Experimental Physics Control Systems, San Francisco, USA, 2013.
- B. Bradu, R. Avezuela, E. Blanco, P. Cobas, P. Gayet, A. Veleiro .
CRYOLIB: a commercial library for modelling and simulation of cryogenic processes with EcosimPro. In Proceedings of 24th International Cryogenic
Engineering Conference, Fukuoka, Japan, 2012.
- B. Bradu, P. Gayet, S.I. Niculescu. Control Optimization
of a LHC 18 kW cryoplant using dynamic simulations. In Cryogenic Engineering Conference, Tucson, USA, 2009.
- B. Bradu, P. Gayet, S.I. Niculescu. Dynamic Simulation
of a 1.8K Refrigeration Unit for the LHC. In Proceedings of 22nd International Cryogenic Engineering Conference, Seoul, South Korea, 2008.
- B. Bradu, P. Gayet, S.I. Niculescu. Modelling
simulation and control of large scale cryogenic systems. In Proceedings of 17th International Federation of Automatic Control World Congress, Seoul, South Korea, 2008.
- B. Bradu, P. Gayet, S.I. Niculescu. A
dynamic simulator for large scale cryogenic systems. In Proceedings of 6th EUROSIM Congress on Modelling and Simulation, Ljubljana, Slovenia,
2007.
Conferences (as co-author)
- B. Naydenov, L. Delprat, B. Bradu, K. Brodzinski.
2 K system exergetic optimisation and helium recovery system for FCC-ee.
In Proceedings of the 29th International Cryogenic Engineering Conference, Geneva, Switzerland, 2024.
- L. Delprat, B. Naydenov, B. Bradu, K. Brodzinski.
Status of the FCC cryogenics feasibility study.
In Proceedings of the 29th International Cryogenic Engineering Conference, Geneva, Switzerland, 2024.
- L. Mether, B. Bradu, G. Iadarola, G. Rumolo, L. Sabato..Electron cloud observations and mitigation for the LHC Run 3.
In Proceedings of International Particle Accelerator Conference, Venezia, Italia 2023.
- V. Lefebvre, B. Bradu, L. Delprat, E. Duret, G. Ferlin, B. Ivens, M. Pezzetti.
Process control system evolution for the LHC cold compressors at CERN. In Proceedings of the Cryogenic Engineering Conference, Hartford, USA, 2019.
- K. Brodzinski, B. Bradu, L. Delprat, G. Ferlin.
Cryogenic operational experience from the LHC physics run 2 (2015-2018 inclusive). In Proceedings of the Cryogenic Engineering Conference, Hartford, USA, 2019.
- O. Martensson, B. Bradu, G. Ferlin.
Signal analysis for automated diagnostic applied to LHC cryogenics. In Proceedings of the International Conference on
Accelerator and Large Experimental Physics Control Systems, New-York, USA, 2019.
- K. Brodzinski, B. Bradu, S. Claudet, L. Delprat, G. Ferlin, D. Delikaris.
Adaptation of the cryogenic system capacity for the LHC dynamic heat load - operational experience.
In Proceedings of International Particle Accelerator Conference, Vancouver, Canada 2018.
- G. Iadarola, B. Bradu, P. Dijkstal, L. Mether, G. Rumolo, G. Skripka, L. Tavian .
Overview on heat loads in the LHC . In Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, 2018, La Biodola, Isola d Elba, Italy.
- R. Cirillo, Ph. Gayet, B. Bradu.
Implementation of preventive diagnostics measures for the CERN cryogenic system . In Proceedings of 27th International Cryogenic
Engineering Conference, Oxford, United Kingdom, 2018.
- Ph. Gayet, B. Bradu, E. Blanco Vinuela, R. Cirillo.
Online Analysis for anticipated failure diagnostic of the CERN cryogenic systems . In Proceedings of the 14th International Conference on
Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 2017.
- W. Booth, E. Blanco, B. Bradu, S. Sourisseau.
VIrtual control commissionng for a large critical ventilation stystem : The CMS cavern use case. In Proceedings of the 14th International Conference on
Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 2017.
- F. Tilaro, B. Bradu, M. Gonzalez-Berges, F. Varela, M. Roshchin.
Model learning algorithm for anomaly detection in CERN control systems. In Proceedings of the 14th International Conference on
Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 2017.
- S. Blanchard, M. Bes, E. Blanco, W. Booth, B. Bradu, R. Ferreira, P. Gomes, A. Gutierrez, A. Rocha, T.H. van Winden, L. Kopylov.
The UNICOS-CPC vacuum controls package . In Proceedings of the 14th International Conference on
Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 2017.
- L. Delprat, B. Bradu, K. Brodzinski, G. Ferlin, K. Hafi, L. Herblin, E. Rogez, A. Suraci.
Main improvements of LHC Cryogenics Operation during Run 2 (2015-2018) .
In Cryogenic Engineering Conference, Madison, USA, 2017
- M. Pezzeti, C. V. M. Garcia, B. Bradu, E. Rogez.
Overview of different control strategies for a typical cryogenic warm compression stations at CERN.
In Cryogenic Engineering Conference, Madison, USA, 2017
- R. Marti, B. Bradu, E. Blanco Vinuela, L. Frutos, R. Mazaeda, C. Prada.
PID_TUNE: A PID autotuning software tool on UNICOS CPC.
In Proceedings of the 15th International Conference on Accelerator and
Large Experimental Physics Control Systems, Melbourne, Australia, 2015.
- W. Booth, B. Bradu, E. Blanco, M. Quilichini, M. Bes, M. Zimny, R. Barillere.
A modular approach to develop standardized HVAC control systems with UNICOS CPC framework.
In Proceedings of the 15th International Conference on Accelerator and
Large Experimental Physics Control Systems, Melbourne, Australia, 2015.
- L. Gomez, B. Bradu, E. Blanco, R. Maekawa, M. Chalifour .
An optimal control approach for an overall cryogenic plant under pulsed heat loads. In Proceedings of 25th International Cryogenic
Engineering Conference, Twente, Netherland, 2014.
- F. Bonne, M. Alamir, P. Bonnay, B. Bradu. Model Based Multivariable Controller for Large Scale Compression Stations. In Cryogenic Engineering Conference, Anchorage, USA, 2013.
- W. Booth, B. Bradu, E. Blanco, P. Gayet, R. Maekawa, L. Serio, H.S. Chang, M. Chalifour.
Dynamic simulation of the ITER helium cryogenic system under pulsed heat loads. In Proceedings of 24th International Cryogenic
Engineering Conference, Fukuoka, Japan, 2012.
- M. Pezzetti, B. Bradu, P. Gayet, J. Vasseur.
Helium Cryoplant On-line Commissioning and Operator Training : two Applications
of the PROCOS Simulation System at CERN. In Proceedings of the
12th International Conference on Accelerator and Large Experimental Physics
Control Systems, Kobe, Japon, 2009.
- P. Gayet, B. Bradu.
PROCOS : a real time process simulator coupled to the control system.
In Proceedings of the 12th International Conference on Accelerator and
Large Experimental Physics Control Systems, Kobe, Japan, 2009.
- E. Rogez, B. Bradu, A. Moraux, M. Pezzetti, Ph. Gayet, H. Coppier.
A simulation study for the virtual commissioning of the CERN central
helium liquefier. In Proceedings of 22nd International Cryogenic
Engineering Conference, Seoul, South Korea, 2008.
History of Sciences
Reports