Projects per year
Personal profile
Research interests
My core research focuses on detector development for future particle physics experiments and its spin-offs, mainly in the fields of nuclear waste management, radiation measurements, radiotherapy and homeland security. I focus on the design, development and characterisation of novel radiation detectors, the accompanying data analysis and radiation damage effects in detectors and electronics.
I have been working on the development of sensors aimed towards the Linear Collider with strong emphasis on Monolithic Active Pixel Sensors (MAPS) based systems. Using the knowledge and experience from particle physics, we are now developing a system for radiotherapy verification. We have shown treatment beam shape measurements with most excellent precision and invented a completely novel way for real time dosimetry as well.
In particle physics, I focus on the development of a new Velo detector, the innermost and most important detector of the LHCb experiment at CERN. I am also involved in the detector development for the mu3e experiment that will be built at PSI and am joining the CEPC effort.
Over the years, I developed a strong interest in cosmic ray tomography for nuclear waste characterisation and homeland security. Inintially we started to develop a scanner to detect lumps of high-Z material hidden in shipping containers using cosmic rays to prevent nuclear devices being smuggled into the country. The technique we developed using cosmic radiation is amongst others also applicable for nuclear waste management. We built detectors and have developed algorithms to identify the material and measure the size of small objects embedded in concrete. Furthermore, we are now able to find air bubbles in concrete as well. Currently, I am the work package manager for the cosmic ray tomography work package in the H2020 funded CHANCE project. CHANCE is aimed at characterisation of conditioned nuclear waste. Muon tomography is one of the core work packages. Furthermore, we are developing the technique for civil nuclear engineering inspections.
External positions
Visiting Professor , University of South China
28 Nov 2018 → …
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ML2C - Machine Learning for robust, real-time dosimetry and MultiLeaf Collimator verification
1/10/19 → 31/03/20
Project: Research
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Research output
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Monitoring pencil beam scanned proton radiotherapy using a large format CMOS detector
Flynn, S., Mamolopoulos, S., Rompokos, V., Poynter, A., Toltz, A., Beck, L. M. G., Ballisat, L., Velthuis, J. J., Allport, P., Green, S., Thomas, R. & Price, T., 11 Jun 2022, In: Nuclear Instruments and Methods in Physics Research Section A: Vol.. 1033, 9 p., 166703.Research output: Contribution to journal › Article (Academic Journal) › peer-review
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Charge collection properties of prototype sensors for the LHCb VELO upgrade
Geertsema, R., Akiba, K., van Beuzekom, M., Buchanan, E., Burr, C., Byczynski, W., Collins, P., Dall'Occo, E., Evans, T., Franco Lima, V., Heijhoff, K., Kopciewicz, P., Marinho, F., Price, E. P., Rachwal, B., Richards, S. E., Saunders, D., Schindler, H., Snoek, H., Szumlak, T. & 3 others, , 23 Feb 2021, In: Journal of Instrumentation. 16, 2, 21 p., P02029.Research output: Contribution to journal › Article (Academic Journal) › peer-review
Open AccessFile2 Citations (Scopus)17 Downloads (Pure) -
Development of muon scattering tomography for a detection of reinforcement in concrete
Dobrowolska, M. J., Velthuis, J. J., Kopp, A. K., De Sio, C., Milne, R. & Pearson, P., 6 Sep 2021, In: Engineering Research Express. 3, 3, 16 p., 035037.Research output: Contribution to journal › Article (Academic Journal) › peer-review
Open AccessFile17 Downloads (Pure)
Activities
- 3 Membership of external research organisation
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LHCb-UK (External organisation)
Jaap J Velthuis (Contributor)
1 Sep 2013 → …Activity: Membership types › Membership of external research organisation
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LHCb (External organisation)
Jaap J Velthuis (Contributor)
1 Sep 2009 → …Activity: Membership types › Membership of external research organisation
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European Organization for Nuclear Research (External organisation)
Jaap J Velthuis (Member)
6 Jan 1996 → …Activity: Membership types › Membership of external research organisation