AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00328139" target="_blank" >RIV/68407700:21340/18:00328139 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1098/rsta.2017.0274" target="_blank" >http://dx.doi.org/10.1098/rsta.2017.0274</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rsta.2017.0274" target="_blank" >10.1098/rsta.2017.0274</a>

Jazyk výsledku

angličtina

Název v původním jazyce

AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam

Popis výsledku v původním jazyce

The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moire deflectometer/Talbot-Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n = 1-3 and n = 3-15 transitions in Ps, Ps formation in a target at 10K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of (p) over bar, radial compression to sub-millimetre radii of mixed e(-)/(p) over bar plasmas in 1 T field, high-efficiency transfer of (p) over bar to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen-cooling of antiprotons and formation of a beam of antihydrogen-are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements.

Název v anglickém jazyce

AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam

Popis výsledku anglicky

The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moire deflectometer/Talbot-Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n = 1-3 and n = 3-15 transitions in Ps, Ps formation in a target at 10K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of (p) over bar, radial compression to sub-millimetre radii of mixed e(-)/(p) over bar plasmas in 1 T field, high-efficiency transfer of (p) over bar to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen-cooling of antiprotons and formation of a beam of antihydrogen-are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/EE2.3.30.0034" target="_blank" >EE2.3.30.0034: Podpora zkvalitnění týmů výzkumu a vývoje a rozvoj intersektorální mobility na ČVUT v Praze</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Philosophical Transactions of the Royal Socxiety A - Mathematical, Physical and Engineering Sciences

ISSN

1364-503X

e-ISSN

1471-2962

Svazek periodika

376

Číslo periodika v rámci svazku

2116

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000425631000007

EID výsledku v databázi Scopus

2-s2.0-85043982453