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Article
Title	Pulsed production of antihydrogen
Author(s)	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) ; Comparat, Daniel (LAC, Orsay) ; Consolati, Giovanni (INFN, Milan ; Milan, Polytech.) ; Demetrio, Andrea (Kirchhoff Inst. Phys.) ; Di Noto, Lea (Genoa U. ; INFN, Genoa) ; Doser, Michael (CERN) ; Fanì, Mattia (CERN ; Genoa U. ; INFN, Genoa) ; Ferragut, Rafael (INFN, Milan ; Milan Polytechnic) ; Fesel, Julian (CERN) ; Gerber, Sebastian (CERN) ; Giammarchi, Marco (INFN, Milan) ; Gligorova, Angela (Stefan Meyer Inst. Subatomare Phys.) ; Glöggler, Lisa Theresa (CERN) ; Guatieri, Francesco (Trento U. ; TIFPA-INFN, Trento) ; Haider, Stefan (CERN) ; Hinterberger, Alexander (CERN) ; Kellerbauer, Alban (Heidelberg, Max Planck Inst.) ; Khalidova, Olga (CERN) ; Krasnický, Daniel (INFN, Genoa) ; Lagomarsino, Vittorio (INFN, Genoa) ; Malbrunot, Chloé (CERN) ; Mariazzi, Sebastiano (Trento U. ; TIFPA-INFN, Trento) ; Matveev, Viktor (Moscow, INR) ; Müller, Simon (Kirchhoff Inst. Phys.) ; Nebbia, Giancarlo (INFN, Padua) ; Nedelec, Patrick (Lyon U.) ; Nowak, Lilian (CERN) ; Oberthaler, Markus (Kirchhoff Inst. Phys.) ; Oswald, Emmanuel (CERN) ; Pagano, Davide (Brescia U. ; INFN, Pavia) ; Penasa, Luca (Trento U. ; TIFPA-INFN, Trento) ; Petracek, Vojtech (CTU, Prague) ; Povolo, Luca (Trento U. ; TIFPA-INFN, Trento) ; Prelz, Francesco (INFN, Milan) ; Prevedelli, Marco (U. Bologna (main)) ; Rienäcker, Benjamin (CERN) ; Røhne, Ole (Oslo U.) ; Rotondi, Alberto (INFN, Pavia ; Pavia U.) ; Sandaker, Heidi (Oslo U.) ; Santoro, Romualdo (Insubria U., Como ; INFN, Milan) ; Testera, Gemma (INFN, Genoa) ; Tietje, Ingmari (CERN) ; Toso, Valerio (INFN, Milan ; Milan Polytechnic) ; Wolz, Tim (CERN) ; Yzombard, Pauline (Heidelberg, Max Planck Inst. ; UPMC, Paris (main)) ; Zimmer, Christian (CERN ; Oslo U. ; Heidelberg U.) ; Zurlo, Nicola (INFN, Pavia ; Brescia U.)
Publication	2021
Number of pages	11
In:	Commun. Phys. 4 (2021) 19
DOI	10.1038/s42005-020-00494-z
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN AD ; AEGIS AD-6
Abstract	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. The pulsed source is generated by the charge-exchange reaction between Rydberg positronium atoms—produced via the injection of a pulsed positron beam into a nanochanneled Si target, and excited by laser pulses—and antiprotons, trapped, cooled and manipulated in electromagnetic traps. The pulsed production enables the control of the antihydrogen temperature, the tunability of the Rydberg states, their de-excitation by pulsed lasers and the manipulation through electric field gradients. The production of pulsed antihydrogen is a major landmark in the AEḡIS experiment to perform direct measurements of the validity of the Weak Equivalence Principle for antimatter.
Copyright/License	© 2021-2024 The Author(s) (License: CC-BY-4.0)

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