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Advanced examination of Nb$_{3}$Sn coils and conductors for the LHC luminosity upgrade: a methodology based on computed tomography and materialographic analyses
/ Santillana, I Aviles (CERN) ; Sgobba, S (CERN) ; Crouvizier, M D (CERN) ; Devred, A (CERN) ; Izquierdo, G Arnau (CERN) ; Bulat, B (CERN) ; Moros, A (CERN) ; Izquierdo Bermudez, S (CERN) ; Milanese, A (CERN) ; Savary, F (CERN) et al.
The future of particle accelerators is strongly linked to the development of high—field magnets. The European Organization for Nuclear Research (CERN) is currently developing Nb$_{3}$Sn-based magnets for the high-luminosity upgrade of the large hadron collider (HL-LHC), to fully exploit its potential and surpass the intrinsic performance limitations of Nb–Ti-based magnets. [...]
2024 - 14 p.
- Published in : Supercond. Sci. Technol. 37 (2024) 085007
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Analysis of the Leakage Events in the Thermal Shield Cooling Pipes of the ITER Magnet System
/ Sgobba, Stefano (CERN) ; Santillana, Ignacio Aviles (CERN) ; Celuch, Michal (CERN) ; Crouvizier, Mickaël (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Castro, Enrique Rodriguez (CERN) ; Mitchell, Neil (Euratom, St. Paul Lez Durance) ; Koizumi, Norikiyo (Euratom, St. Paul Lez Durance) ; Pearce, Robert (Euratom, St. Paul Lez Durance) ; Worth, Liam (Euratom, St. Paul Lez Durance) et al.
The ITER Thermal Shields (TS) consist of actively cooled stainless steel panels. Their role is to minimise the radiation heat load from warm components, such as the Vacuum Vessel (VV) and the cryostat, hence contributing to insulating the magnet system operating at 4.5 K. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4203405
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Microstructure Characterization of Nb$_3$Sn Wires With Nanoprecipitate Artificial Pinning Centers Using Synchrotron High-Energy X-Rays
/ Croteau, Jean-Francois (LBL, Berkeley) ; Baskys, Algirdas (LBL, Berkeley ; CERN) ; Naus, Michael (LBL, Berkeley) ; Park, Jun-Sang (Argonne, PHY) ; Kenesei, Peter (Argonne, PHY) ; Xu, Xingchen (Fermilab) ; Wan, Fang (Fermilab) ; Pong, Ian (LBL, Berkeley)
Synchrotron high-energy X-rays were used in an attempt to estimate nanoprecipitate size and size distribution in Nb$_3$Sn powder-in-tube wires with ZrO$_2$ or HfO$_2$ rtificial pinning centers via small angle X-ray scattering (SAXS). The effect of sample preparation was studied but measurements for as-received and for partially etched wires were not successful. [...]
2023 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8000505
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State of the Art in Cyclotrons for Radionuclide Production in Biomedicine
/ Marengo, Mario (Bologna U.) ; Cicoria, Gianfranco ; Infantino, Angelo (CERN) ; Vichi, Sara ; Zagni, Federico ; Mostacci, Domiziano (Bologna U.)
Cyclotrons are one of the most important sources of radionuclides used in biomedical applications. The production of important radionuclides used in single-photon emission tomography techniques such as 123I, 67Ga, 201Tl, and 111In has been based for decades on cyclotrons, typically proton machines with an energy up to 30 MeV. [...]
2023 - 11 p.
- Published in : Nucl. Sci. Eng. 197 (2023) 2259-2269
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Fast28 a low-power fast readout design for SiPMs in 28nm CMOS
/ Piller, M (CERN ; Graz, Tech. U.) ; Ballabriga, R (CERN) ; Bandi, F (CERN) ; Campbell, M (CERN) ; Deutschmann, B (Graz, Tech. U.) ; Fernández-Tenllado, J M (CERN) ; Gascon, D (Barcelona U.) ; Gomez, S (Barcelona, Polytechnic U. ; Barcelona U.) ; Michalowska-Forsyth, A (Graz, Tech. U.) ; Mauricio, J (Barcelona U.) et al.
The field of detector readout electronics for precise timing has experienced a remarkable surge of interest due to its diverse range of applications in nuclear medicine such as Positron Emission Tomography (PET), High Energy Physics (HEP), Time-of-Flight (ToF) mass spectrometry and many other fields. This growth can be attributed to rapid advancements in photodetectors, particularly the silicon photomultiplier (SiPM), which has demonstrated exceptional suitability for these applications, owing to its ability to generate signals with unprecedentedly fast rise times. [...]
2023 - 1 p.
- Published in : 10.1109/NSSMICRTSD49126.2023.10337864
In : 2023 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (2023 IEEE NSS MIC RTSD), Vancouver, Canada, 4 - 11 Nov 2023
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Comparison of timing and DOI performance of light-sharing TOF-PET modules with different readout electronics
/ Terragni, G (CERN ; TU Vienna) ; Nadig, V (RWTH Aachen U.) ; Di Gangi, S (Milan Bicocca U.) ; Marton, J (TU Vienna) ; Schulz, V (RWTH Aachen U.) ; Gundacker, S (RWTH Aachen U.) ; Pizzichemi, M (CERN ; Milan Bicocca U.) ; Hillemanns, E Auffray (CERN)
Time resolution plays a key role in positron emission tomography (PET) by enhancing the signal-to-noise ratio and ultimately improving the quality of the image. In previous studies, an array of 16 LYSO crystals (measuring 3.1x3.1x15 mm$^3$) coupled to Hamamatsu S13361-3050AE-04 SiPMs and readout by a custom-made NINO board achieved a coincidence time resolution (CTR) below 160 ps. [...]
2023 - 1 p.
- Published in : 10.1109/NSSMICRTSD49126.2023.10338305
In : 2023 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (2023 IEEE NSS MIC RTSD), Vancouver, Canada, 4 - 11 Nov 2023
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Machine learning-based events classification in heterostructured scintillators
/ Lowis, C (CERN ; RWTH Aachen U.) ; Pagano, F (CERN ; Milan Bicocca U.) ; Kratochwil, N (CERN) ; Pizzichemi, M (Milan Bicocca U.) ; Langen, K J (RWTH Aachen U.) ; Ziemons, K (Applied Sci. U., Aachen) ; Hillemanns, E Auffray (CERN)
Time-of-flight positron emission tomography (TOF PET) faces the challenge of improving time resolution while maintaining high detector efficiency. Heterostructured scintillators, which consist of multiple layers of different scintillating materials with complementary properties, have emerged as a promising solution. [...]
2023 - 1 p.
- Published in : 10.1109/NSSMICRTSD49126.2023.10338326
In : 2023 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (2023 IEEE NSS MIC RTSD), Vancouver, Canada, 4 - 11 Nov 2023
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FastIC: A Highly Configurable ASIC for Fast Timing Applications
/ Gόmez, S (Barcelona, IEEC) ; Fernández-Tenllado, J M (CERN) ; Alozy, J (CERN) ; Campbell, M (CERN) ; Manera, R (ICC, Barcelona U.) ; Mauricio, J (ICC, Barcelona U.) ; Mariscal, A (ICC, Barcelona U.) ; Pujol, C (ICC, Barcelona U.) ; Sánchez, D (Barcelona, IEEC) ; Sanmukh, A (ICC, Barcelona U.) et al.
This work presents the 8-channel FastIC ASIC developed in CMOS 65 nm technology suitable for the readout of positive and negative polarity sensors with intrinsic amplification in High Energy Physics experiments, Positron Emission Tomography and other Time-of-Flight systems. The front-end can be configured to readout each input channel individually or perform analog summation of up to 4 single-ended channels before discrimination in view of extending precise timing to large and segmented areas. [...]
2021 - 4 p.
- Published in : 10.1109/NSS/MIC44867.2021.9875546
In : IEEE NSS MIC 2021, Online, Japan, 16 - 23 Oct 2021, pp.1-4
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