Theory
Programme Leader
Robert Fleischer
Spectrum of research highlights
- F. Herzog, S. Moch, B. Ruijl, T. Ueda, J. Vermaseren, A. Vogt, Five-loop contributions to low-N non-singlet anomalous dimensions in QCD
- J. de Vries, G. Falcioni, F. Herzog, B. Ruijl, Two- and three-loop anomalous dimensions of Weinberg’s dimension-six CP-odd gluonic operator
- M. van Beekveld, W. Beenakker, R. Basu, E. Laenen, A. Misra, P. Motylinski, Next-to-leading power threshold effects for resummed prompt photon production
- G. Lustermans, A. Papaefstathiou, W. Waalewijn, How much jet resummation do we need?
- A. Papaefstathiou, S. Plaetzer, K. Sakurai, On the phenomenology of sphaleron-induced processes at the LHC and beyond
- R. Gauld, Precise predictions for multi-TeV and PeV energy neutrino scattering rates
- NNPDF Collaboration (Rabah Abdul Khalek et al.), Parton Distributions with Theory Uncertainties: General Formalism and First Phenomenological Studies
- E. Nocera, M. Ubiali, C. Voisey, Single Top Production in PDF fits
- S. Carrazza, C. Degrande, S. Iranipour, J. Rojo, M. Ubiali, Can New Physics hide inside the proton?
- P. Mulders, C. Van Hulse, Noncollinearity in dijjet fragmentation in electron-positron scattering
- M. Postma, J. van de Vis, Source terms for electroweak baryogenesis in vev-insertion approximation beyond leading order
- R. Oncala, K. Petraki, Dark matter bound state formation via emission of a charged scalar
- R. Fleischer, R. Jaarsma, G. Koole, Testing lepton flavour universality with (semi)-leptonic D(s) decays
- S. van Beek, E. Nocera, J. Rojo, E. Slade, Constraining the SMEFT with Bayesian reweighting
- S. Frixione, B. Fuks, V. Hirschi, K. Mawatari, H.-S. Shao, P.A. Sunder, M. Zaro, Automated simulations beyond the Standard Model: supersymmetry
- M. van Beekveld, S. Caron, R. Ruiz de Austri, The current status of fine-tuning in supersymmetry
- M. Borinsky, K. Vogtmann, The Euler characteristic of $Out(F_n)$
Computer codes
- FORM 4.2 (J. Vermaseren, F. Herzog, T. Ueda, et al.)
- MadGraph5_aMC@NLO (M. Zaro et al.)
Outreach:
- Theory group New social media channels (instagram and twitter): https://twitter.com/nikheftheory, https://www.instagram.com/nikheftheorygroup
- Blog from the Lindau Nobel Laureate Meeting 2019 (P. van Vliet)
Visitors:
Jose Ignacio Latorre (Barcelona and Singapore), Rohini Godbole (Bangalore), H. Dreiner (Bonn), Chris Quigg (FNAL), et al.
(Co)-organisation of Workshops and Conferences:
- NNPDF Collaboration Meeting, Amsterdam, February 2019 (J. Rojo)
- Physics and Beyond (P. van Vliet, P. Mulders)
Physics Data Processing
Programme Leader
Jeff Templon
Main points: scientific
- Completion of GPU-based framework “Allen” for LHCb Trigger (R. Aaij)
- Collaboration with ASTRON (Square Kilometer Array) on joint computing infrastructure for large-scale science (LHC, SKA, and KM3NeT)
Main points: technical
- Installation of new dCache Grid storage server
- New architecture for storage hardware
- Servers using higher-performance POWER architecture
- Introduction of warm and cold storage tiers
- Hosted HEPiX Workshop in Amsterdam
- Installation of European workload-submission infrastructure for VIRGO
- Participation in specification of next Dutch Supercomputer
- Key role in penetration tests of certain Dutch government organisations
Key positions in collaborations
- WLCG Overview Board: Jeff Templon
- Dutch National e-Infrastructure Executive Team: Jeff Templon and David Groep
Computer codes
- OpenID Connect Federation – Metadata Signing Service
- OpenID Connect Federation – Trust Chain Validation Library
Main paper in 2019
- H. Short, D. Kelsey, D. Groep (et al.) , WISE Information Security for Collaborating e-Infrastructures, EPJ Web Conf. 214 (2019)03041
Detector R&D
Programme Leader
Niels van Bakel
Main points: scientific
- Research on fast sensors for 4D tracking in LHC detector upgrades
- ASIC design for detectors with high temporal resolution
- Characterisation of a Gridpix Quad module for a future linear collider TPC
- Development of various wavefront sensors for Advanced Virgo, and GW detector upgrades in general
- X-ray detector research for industrial and medical applications, in collaboration with CWI (Flexray)
- Sensitivity improvement of the Advanced Virgo GW detector
- Member of the photo-receiver working group in the LISA consortium: developing quadrant photo-diodes for LISA, a space-based gravitational wave detector
Main points: technical
- The Timepix4 readout chip: a new hybrid pixel detector chip with 200ps time resolution, makes faster timing possible in tracking detectors and X-ray imaging
- The SPIDR4 system is available to readout the Timepix4 with up to 160 Gb/s per chip.
- Started a ‘pilot’ collaboration with the TU-Delft Faculty of Aerospace Engineering on ‘Asteroid Muography’: using muons to characterize the interior of an asteroid with a detector on-board of a satellite
- Realisation of an optical lab for photodetector research, optical techniques, and controls
- A second generation low-noise readout chip for a 1 ng/sqrt(Hz) MEMS accelerometer
- Stacking of nano-membranes for a new type of photon detector
Key positions in collaborations
- Commissioning coordinator Advanced Virgo – Matteo Tacca
Awards
- NWO TTW Take-off: two-phase cooling for high performance datacenters – Martin van Beuzekom, InCooling.
- ATTRACT: Seismic Imaging & Monitoring Systems – Niels van Bakel, Innoseis B.V.
- ATTRACT: MEMS-made Photocathodes with High Quantum Efficiency – Harry v/d Graaf, Photonis
Main paper in 2019
- High-performance phase camera as a frequency selective laser wavefront sensor for gravitational wave detectors – Kazuhiro Agatsuma, Laura van der Schaaf, Martin van Beuzekom, David Rabeling (Nikhef, Amsterdam), Jo van den Brand (Nikhef, Amsterdam & Vrije U., Amsterdam). 2019. 16 pp. Published in Opt.Express 27 (2019) no.13, 18533-18548