Prospects for comparison of matter and antimatter gravitation with ALPHA-g.
Prospects for comparison of matter and antimatter gravitation with ALPHA-g.
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DOI：
10.1098/rsta.2017.0265
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发表时间：
2018-03-28
期刊：
影响因子：
--
通讯作者：
Bertsche WA
中科院分区：
文献类型：
--
作者：
Bertsche WA
阿尔法实验最近进入了其实验方案的扩大阶段，部分原因是在欧洲核子研究中心新的AD + ELENA反质子设施框架内进行实验的预期效益。随着反氢捕获现在是ALPHA实验中的常规操作，该合作正在朝着对捕获的反氢原子进行精确原子测量的方向取得进展，首次激发了1 S-2S跃迁，首次测量了反氢超精细光谱（Ahmadi等人，2017 Nature 541，506-510（doi：10.1038/nature 21040）; Nature 548，66-69（doi：10.1038/nature 23446））。我们正在这些成功的基础上扩大我们的物理方案，包括反物质引力的测量。我们计划扩展原理证明方法（Amole等人，2013 Nat. Commun. 4，1785（doi：10.1038/ncomms 2787）），首次在原ALPHA装置中演示，并进行反物质引力加速度的精确测量，目的是在1%水平上实现弱等效原理的检验。这个装置的设计是从模拟和验证限制在磁最小原子陷阱内的反氢轨道的经验中汲取的。新的实验，阿尔法-g，将是一个额外的原子捕获装置位于阿尔法实验的目的是测量反氢引力。这篇文章是Theo Murphy会议议题“ELENA时代的反质子物理学”的一部分。
The ALPHA experiment has recently entered an expansion phase of its experimental programme, driven in part by the expected benefits of conducting experiments in the framework of the new AD + ELENA antiproton facility at CERN. With antihydrogen trapping now a routine operation in the ALPHA experiment, the collaboration is leading progress towards precision atomic measurements on trapped antihydrogen atoms, with the first excitation of the 1S–2S transition and the first measurement of the antihydrogen hyperfine spectrum (Ahmadi et al. 2017 Nature 541, 506–510 (doi:10.1038/nature21040); Nature 548, 66–69 (doi:10.1038/nature23446)). We are building on these successes to extend our physics programme to include a measurement of antimatter gravitation. We plan to expand a proof-of-principle method (Amole et al. 2013 Nat. Commun. 4, 1785 (doi:10.1038/ncomms2787)), first demonstrated in the original ALPHA apparatus, and perform a precise measurement of antimatter gravitational acceleration with the aim of achieving a test of the weak equivalence principle at the 1% level. The design of this apparatus has drawn from a growing body of experience on the simulation and verification of antihydrogen orbits confined within magnetic-minimum atom traps. The new experiment, ALPHA-g, will be an additional atom-trapping apparatus located at the ALPHA experiment with the intention of measuring antihydrogen gravitation. This article is part of the Theo Murphy meeting issue ‘Antiproton physics in the ELENA era’.
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影响因子：
16.6
作者：
Ahmadi M;Alves BXR;Baker CJ;Bertsche W;Butler E;Capra A;Carruth C;Cesar CL;Charlton M;Cohen S;Collister R;Eriksson S;Evans A;Evetts N;Fajans J;Friesen T;Fujiwara MC;Gill DR;Gutierrez A;Hangst JS;Hardy WN;Hayden ME;Isaac CA;Ishida A;Johnson MA;Jones SA;Jonsell S;Kurchaninov L;Madsen N;Mathers M;Maxwell D;McKenna JTK;Menary S;Michan JM;Momose T;Munich JJ;Nolan P;Olchanski K;Olin A;Pusa P;Rasmussen CØ;Robicheaux F;Sacramento RL;Sameed M;Sarid E;Silveira DM;Stracka S;Stutter G;So C;Tharp TD;Thompson JE;Thompson RI;van der Werf DP;Wurtele JS
通讯作者：
Wurtele JS
影响因子：
8.6
作者：
Hohensee, Michael A.;Mueller, Holger;Wiringa, R. B.
通讯作者：
Wiringa, R. B.
影响因子：
8.6
作者：
Hamilton, Paul;Zhmoginov, Andrey;Mueller, Holger
通讯作者：
Mueller, Holger
影响因子：
44.1
作者：
Kostelecky, V. Alan;Russell, Neil
通讯作者：
Russell, Neil
影响因子：
8.6
作者：
Gabrielse, G.;Kalra, R.;Walz, J.
通讯作者：
Walz, J.