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Testing the ubiquitous presence of very high energy emission in gamma-ray bursts with the MAGIC telescopes
/ Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Barcelona, IFAE) ; Aguasca-Cabot, A. (Barcelona U.) ; Agudo, I. (IAA, Granada) ; Aniello, T. (INAF, Rome) ; Ansoldi, S. (Udine U. ; INFN, Trieste ; ICRA, Rome) ; Antonelli, L.A. (INAF, Rome) ; Engels, A. Arbet (Garching, Max Planck Inst., MPE) et al.
Gamma-ray bursts (GRBs) are the most powerful transient objects in the Universe, and they are a primary target for the MAGIC Collaboration. Recognizing the challenges of observing these elusive objects with Imaging Atmospheric Cherenkov Telescopes (IACTs), we implemented a dedicated observational strategy that included an automated procedure for rapid re-pointing to transient sources. [...]
arXiv:2507.05215.-
2025-08-01 - 15 p.
- Published in : Astron. Astrophys. 700 (2025) A96
Fulltext: document - PDF; 2507.05215 - PDF;
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Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations
/ Abe, K. (Tokai U., Hiratsuka) ; Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Barcelona, IFAE) ; Aguasca-Cabot, A. (Barcelona U.) ; Agudo, I. (Granada U., Theor. Phys. Astrophys.) ; Aniello, T. (INAF, Rome) ; Ansoldi, S. (Udine U. ; INFN, Trieste ; ICRA, Rome) ; Antonelli, L.A. (INAF, Rome) et al.
Mrk 421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any active galactic nuclei. We aim to characterize the multiwavelength behavior during this exceptional year for Mrk 421, and evaluate whether it is consistent with the picture derived with data from other less exceptional years. [...]
arXiv:2501.03831.-
2025-02-01 - 21 p.
- Published in : Astron. Astrophys. 694 (2025) A195
Fulltext: document - PDF; 2501.03831 - PDF;
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Cosmic-ray acceleration and escape from supernova remnant W44 as probed by Fermi-LAT and MAGIC
/ Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Laguna U., Tenerife) ; Aguasca-Cabot, A. (Barcelona U.) ; Agudo, I. (IAA, Granada) ; Aniello, T. (INAF, Rome) ; Ansoldi, S. (Udine U. ; INFN, Trieste ; ICRA, Rome) ; Antonelli, L.A. (INAF, Rome) ; Engels, A. Arbet (Garching, Max Planck Inst., MPE) et al.
Context. The supernova remnant (SNR) W44 and its surroundings are a prime target for studying the acceleration of cosmic rays (CRs). [...]
arXiv:2501.03889.-
2025-01-01 - 15 p.
- Published in : Astron. Astrophys. 693 (2025) A255
Fulltext: 2501.03889 - PDF; document - PDF;
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A Python Package to Compute Beam-Induced Heating in Particle Accelerators and Applications
/ Sito, Leonardo (CERN) ; Giordano, Francesco (CERN) ; Rumolo, Giovanni (CERN) ; Salvant, Benoit (CERN) ; Zannini, Carlo (CERN) ; de la Fuente, Elena (CERN)
High-energy particle beams interact electromagnetically with their surroundings when they travel inside an accelerator. These interactions may cause beam-induced heating of the accelerator’s components, which could eventually lead to outgassing, equipment degradation and physical damage. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 611-614
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.611-614
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Direct Measurement of Beam-Induced Heating on Accelerator Pipes With Fiber Optic Sensors: Numerical Analysis Validation
/ Fienga, Francesco (CERN ; U. Naples (main)) ; Romano Marrazzo, Vincenzo (CERN ; U. Naples (main)) ; Sito, Leonardo (CERN ; U. Naples (main)) ; Giordano, Francesco (CERN) ; Beni, Noemi (CERN ; U. Debrecen, Inst. Phys.) ; Szillasi, Zoltan (U. Debrecen, Inst. Phys. ; CERN) ; Irace, Andrea (U. Naples (main)) ; Zeuner, Wolfram (CERN) ; Salvant, Benoit (CERN) ; Buontempo, Salvatore (INFN, Naples ; CERN) et al.
In the field of accelerator physics, it is crucial to account for heating caused by the passage of high-intensity beams into accelerator components. This phenomenon is known as radio frequency (RF) beam-induced heating (BIH) and requires, other than an accurate design stage, to constantly monitor temperature-related parameters during the accelerator operations. [...]
2023 - 9 p.
- Published in : IEEE Trans. Instrum. Meas. 72 (2023) 9508709
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Fiber Bragg Grating Sensors as Beam-Induced Heating Monitor for the Central Beam Pipe of CMS
/ Fienga, Francesco (U. Naples (main) ; CERN) ; Beni, Noemi (CERN ; Debrecen, Inst. Nucl. Res.) ; Breglio, Giovanni (U. Naples (main) ; CERN) ; Buontempo, Salvatore (INFN, Naples ; CERN) ; Carra, Federico (CERN) ; Giordano, Francesco (CERN) ; Irace, Andrea (U. Naples (main)) ; Marrazzo, Vincenzo Romano (CERN ; U. Naples (main)) ; Salvant, Benoit (CERN) ; Sito, Leonardo (CERN ; U. Naples (main)) et al.
The passage of a high-intensity particle beam inside accelerator components generates heating, potentially leading to degradation of the accelerator performance or damage to the component itself. It is therefore essential to monitor such beam-induced heating in accelerators. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 28-31
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.28-31
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Our Understanding of Transverse Instabilities and Mitigation Tools/Strategy
/ Buffat, X (CERN) ; Arduini, G (CERN) ; Amorim, D (CERN) ; Antipov, S (CERN) ; Barraud, L (CERN) ; Biancacci, N (CERN) ; Carver, L (CERN) ; Giordano, F (CERN) ; Iadarola, G (CERN) ; Li, K (CERN) et al.
The observations of coherent instabilities are compared to the expectations
based on the beam instability model. Their impact in the different phases of the
LHC operation and the corresponding mitigation strategies are discussed, with an
emphasis on the newly developed diagnostics.
2019 - 6 p.
- Published in : (2019) , pp. 107-112
Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.107-112
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