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1.
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Detector R&D Collaboration for Calorimeters
/ Santoro, R et al.
Approved: 06 December 2023.-
Status: Preparation
Experiment: DRD6
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Test beam results of the fiber-sampling dual-readout calorimeter
/ Giaz, A (INFN, Milan ; Insubria U., Varese) ; Santoro, R (INFN, Milan ; Insubria U., Varese) ; Ampilogov, N (INFN, Milan ; Insubria U., Varese) ; Caccia, M (INFN, Milan ; Insubria U., Varese) ; Chmill, V (Boskovic Inst., Zagreb) ; Cometti, S (INFN, Milan ; Insubria U., Varese) ; Ferrari, R (INFN, Pavia) ; Gaudio, G (INFN, Pavia) ; Giacomelli, P (INFN, Bologna) ; Karadzhinova Ferrer, A (Boskovic Inst., Zagreb) et al.
The dual-readout calorimetric technique reconstructs the event-by-event electromagnetic fraction of the hadronic shower through the simultaneous measurement of scintillating (S) and Cherenkov (C) light produced by the shower development. The new generation of prototypes, based on Silicon Photomultipliers (SiPMs) readout, adds unprecedented granularity to the well-known high-energy resolution. [...]
2022
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, Italy, 22 - 28 May 2022, pp.167964
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3.
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Exposing a fibre-based dual-readout calorimeter to a positron beam
/ Ampilogov, N. (Bergamo U. ; INFN, Milan) ; Cometti, S. (Bergamo U. ; INFN, Milan) ; Agarwala, J. (INFN, Pavia ; Pavia U.) ; Chmill, V. (Boskovic Inst., Zagreb) ; Ferrari, R. (INFN, Pavia) ; Gaudio, G. (INFN, Pavia) ; Giacomelli, P. (INFN, Bologna ; Bologna U.) ; Giaz, A. (Insubria U., Como ; INFN, Milan) ; Karadzhinova-Ferrer, A. (Boskovic Inst., Zagreb) ; Loeschcke-Centeno, A. (Sussex U.) et al.
A prototype of a dual-readout calorimeter using brass capillary tubes surrounding scintillating and clear plastic optical fibres was tested using beams of particles with energies between 10 and 100 GeV produced by the CERN SPS. The scope of the test was to characterise the performance of the tube-based detector response to positrons in terms of linearity, energy resolution, and lateral granularity. [...]
arXiv:2305.09649.-
2023-09-14 - 23 p.
- Published in : JINST 18 (2023) P09021
Fulltext: document - PDF; 2305.09649 - PDF;
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4.
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Pulsed Production of Antihydrogen in AEgIS
/ AEgIS Collaboration
Cold antihydrogen atoms are a powerful tool to probe the validity of fundamental physics laws, and it's clear that colder atoms, generally speaking, allow an increased level of precision.
After the first production of cold antihydrogen ($\bar{H}$) in 2002, experimental efforts have progressed continuously (trapping, beam formation, spectroscopy), with competitive results already achieved by adapting to cold antiatoms techniques previously well developed for ordinary atoms. Unfortunately, the number of $\bar{H}$ atoms that can be produced in dedicated experiments is many orders of magnitude smaller than available hydrogen atoms, which are at hand in large amount, so the development of novel techniques that allow the production of $\bar{H}$ with well defined conditions (and possibly control its formation time and energy levels) is essential to improve the sensitivity of the methods applied by the different experiments.
We present here the first experimental results concerning the production of $\bar{H}$ in a pulsed mode where the time when 90\% of
the atoms are produced is known with an uncertainty of around 250~ns. [...]
2022 - 7 p.
- Published in : PoS DISCRETE2020-2021 (2022) 079
Fulltext: PDF;
In : 7th Symposium on Prospects in the Physics of Discrete Symmetries (DISCRETE 2020-2021), Bergen, Norway, 29 Nov - 3 Dec 2021, pp.079
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5.
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AE$\overline{g}$IS latest results
/ Guatieri, F (TIFPA-INFN, Trento ; Trento U.) ; Aghion, S (Milan, Polytech. ; Bern U., LHEP) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Angela, G (Bern U., LHEP) ; Bonomi, G (Norwegian U. Sci. Tech. ; INFN, Pavia ; Pavia U.) ; Brusa, R S (TIFPA-INFN, Trento ; Trento U.) ; Caccia, M (U. Brussels (main) ; Milan U. ; INFN, Brescia) ; Caravita, R (Genoa U. ; INFN, Genoa) ; Castelli, F (U. Brussels (main) ; Milan U.) ; Cerchiari, G (Heidelberg, Max Planck Inst.) et al.
The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. [...]
2018 - 7 p.
- Published in : EPJ Web Conf. 181 (2018) 01037
Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics (EXA 2017), Vienna, Austria, 11 - 15 Sep 2017, pp.01037
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6.
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Positronium Rydberg excitation diagnostic in a 1T cryogenic environment
/ Caravita, R (CERN) ; Mariazzi, S (Trento U. ; INFN, Trento) ; Aghion, S (Milan Polytechnic ; INFN, Milan) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, M (INFN, Milan ; Insubria U., Como) ; Belov, A (Mainz U., Inst. Phys. ; Moscow, INR) ; Bonomi, G (Brescia U. ; INFN, Brescia ; INFN, Pavia) ; Brusa, R S (Trento U. ; INFN, Trento) ; Caccia, M (INFN, Milan ; Insubria U., Como) ; Camper, A (CERN) et al.
Forming a pulsed beam of cold antihydrogen using charge-exchange with Rydberg positronium (Ps) is the goal of the AEḡIS collaboration, which aims to a first gravity measurement on neutral antimatter. Recently achieved results in Ps formation and laser spectroscopy in the main AEḡIS apparatus are summarized. [...]
2019 - 6 p.
- Published in : AIP Conf. Proc. 2182 (2019) 030002
In : 18th International Conference on Positron Annihilation (ICPA-18): Positron Annihilation Spectroscopy-Fundamentals, Techniques ad Applications, Orlando, United States, 19 - 24 Feb 2018, pp.030002
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7.
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Dual-Readout Calorimetry for Future Experiments Probing Fundamental Physics
/ Pezzotti, I. (CERN) ; Newman, Harvey (Caltech) ; Freeman, J. (Fermilab) ; Hirschauer, J. (Fermilab) ; Ferrari, R. (INFN, Pavia) ; Gaudio, G. (INFN, Pavia) ; Polesello, G. (INFN, Pavia) ; Santoro, R. (INFN, Milan ; Insubria U., Como) ; Lucchini, M. (INFN, Milan Bicocca ; Milan Bicocca U.) ; Giagu, S. (Rome U. ; INFN, Rome) et al.
In this White Paper for the 2021 Snowmass process, we detail the status and prospects for dual-readout calorimetry. [...]
arXiv:2203.04312 ; FERMILAB-PUB-22-233-PPD-SCD.
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48 p.
Fermilab Library Server - Fulltext - Fulltext
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8.
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9.
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Imaging a positronium cloud in a 1 Tesla
/ Camper, Antoine (CERN) ; Aghion, Stefano (Milan Polytechnic ; INFN, Milan) ; Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, Massimiliano (INFN, Milan ; Insubria U., Como) ; Belov, Alexander (Moscow, INR) ; Bonomi, Germano (INFM, Brescia ; INFN, Pavia) ; Brusa, Roberto (Trento U. ; TIFPA-INFN, Trento) ; Caccia, Massimo (INFN, Milan ; Insubria U., Como) ; Caravita, Ruggero (CERN) ; Castelli, Fabrizio (INFN, Milan ; Milan U.) et al.
We report on recent developments in positronium work in the frame of antihydrogen production through charge exchange in the AEgIS collaboration [1]. In particular, we present a new technique based on spatially imaging a cloud of positronium by collecting the positrons emitted by photoionization. [...]
2019 - 7 p.
- Published in : EPJ Web Conf. 198 (2019) 00004
Fulltext: PDF;
In : Quantum Technology International Conference 2018, Paris, France, 5 - 7 Sep 2018, pp.00004
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10.
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Pulsed production of antihydrogen
/ Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, Massimiliano (Insubria U., Como ; INFN, Milan) ; Belov, Alexander (Moscow, INR) ; Bonomi, Germano (U. Brescia ; INFN, Pavia) ; Brusa, Roberto Sennen (Trento U. ; TIFPA-INFN, Trento) ; Caccia, Massimo (Insubria U., Como ; INFN, Milan) ; Camper, Antoine (CERN) ; Caravita, Ruggero (TIFPA-INFN, Trento ; CERN) ; Castelli, Fabrizio (INFN, Milan ; Milan U.) ; Cheinet, Patrick (LAC, Orsay) et al.
Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the validity of fundamental physics laws and the design of highly sensitive experiments needs antihydrogen with controllable and well defined conditions. We present here experimental results on the production of antihydrogen in a pulsed mode in which the time when 90% of the atoms are produced is known with an uncertainty of ~250 ns. [...]
2021 - 11 p.
- Published in : Commun. Phys. 4 (2021) 19
Fulltext: PDF;
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