Responsive PDRA Support for the Experimental Study of Particle Interactions at High Energy
Lead Research Organisation:
University of Cambridge
Department Name: Physics
Abstract
The Cambridge High Energy Physics Group focuses its research activities on experiments at high-energy accelerators, currently the Large Hadron Collider and the ATLAS and LHCb experiments at CERN, the neutrino experiment MicroBooNE, and the long-baseline neutrino experiment DUNE at Fermilab, and future collider facilities. The goal is to understand the fundamental particles of nature and their interactions, in particular, to discover physics beyond our current understanding, to understand why the Universe is made only of matter and not antimatter and to reveal the identity of dark matter.
The Group is also central to the multi-disciplinary Quantum Technologies for Fundamental Physics projects, AION and MAGIS, which use novel atom interferometry to detect and identify sources of dark matter and gravitational waves in the Universe. The MAGIS 100m and the AION 10m atom interferometers will start their exploitation during the period covered by this grant.
This grant will enable the group to fully support the optimisation and exploitation of physics associated to the ATLAS Level-1 trigger; to support the physics exploitation of MicroBooNE and other neutrino experiments; to exploit the first physics data from the MAGIS-100 experiment and AION-10 demonstrator atom interferometers; and to undertake blue skies detector research and development of the radiation hardness of silicon CMOS devices in preparation for and to establish leadership in experiments at future colliders. The opportunities offered by this exciting physics programme will not only drive the forefront of discovery, but also provide substantial impact to local enterprises and on public engagement.
The Group is also central to the multi-disciplinary Quantum Technologies for Fundamental Physics projects, AION and MAGIS, which use novel atom interferometry to detect and identify sources of dark matter and gravitational waves in the Universe. The MAGIS 100m and the AION 10m atom interferometers will start their exploitation during the period covered by this grant.
This grant will enable the group to fully support the optimisation and exploitation of physics associated to the ATLAS Level-1 trigger; to support the physics exploitation of MicroBooNE and other neutrino experiments; to exploit the first physics data from the MAGIS-100 experiment and AION-10 demonstrator atom interferometers; and to undertake blue skies detector research and development of the radiation hardness of silicon CMOS devices in preparation for and to establish leadership in experiments at future colliders. The opportunities offered by this exciting physics programme will not only drive the forefront of discovery, but also provide substantial impact to local enterprises and on public engagement.
Publications
Aad G
(2024)
The ATLAS trigger system for LHC Run 3 and trigger performance in 2022
in Journal of Instrumentation
| Description | ATLAS Collaboration |
| Organisation | ATLAS Experiment |
| Country | Switzerland |
| Sector | Public |
| PI Contribution | This Cambridge grant is a component part of a wider UK project (involving around 10 UK institutes -- see linked project) which itself is a UK contribution to the ATLAS Collaboration which owns/runs the experiment in CERN we are collectively upgrading. |
| Collaborator Contribution | This grant has supported Cambridge to build the L1Calo ROD, to build ITK Strip Modules, and to perform ITK Sensor QC and AQ . The L1Calo ROD s a high-speed device which collects trigger information and data from the calorimeter(s), processes and, reformats it, and then passes it to systems higher up. It is an integral part of the ATLAS trigger system -- or rather the NEW trigger system that ATLAS has installed to cope with the new high-luminosity running period. The ITK Strip sensors are the components of the new Tracker that ATLAS needs to replace the old SCT and TRT detectors which have reached end of life. |
| Impact | Discovery of the Higgs boson. Precision test of the Standard Model and refinements of its model parameters. Discovery of new hadrons/baryons within the Standard Model. The exclusion of many proposed models of new physics (such as, but not only, many which might have explained dark matter). |
| Title | Back-to-the-Future Trigger |
| Description | Until the end of 2024, every ATLAS event could be triggered and read out based only on the information recorded in that event. The new thing produced by this grant has been a trigger which can correlate activity between two adjacent events. This is only possible because of new firmware generated in Cambridge for the L1Calo trigger hardware also made in Cambridge. The purpose of this trigger is to allow ATLAS to have sensitivity to slow moving long lived particles that are created in one bunch crossing and decay in the next one. |
| Type Of Technology | New/Improved Technique/Technology |
| Year Produced | 2024 |
| Impact | It opens up the ability to search for forms of new physics which previously ATLAS was blind to. |
| Description | HEP Masterclass |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Schools |
| Results and Impact | Each year (except during Covid) we invite ~15 schools to each bring ~20 students to our group to learn about particle physics (both in general, and specicfically about the work we do). Each group of students visits about 6-8 "stations", each lasting about half an hour, in which they participate in or learn about some activity,. That's about 300 students per year. |
| Year(s) Of Engagement Activity | 2018,2019,2020,2023,2024,2025 |
| URL | https://www.hep.phy.cam.ac.uk/Masterclass |
