论文标题

GBAR实验中的正电子积累

Positron accumulation in the GBAR experiment

论文作者

Blumer, P., Charlton, M., Chung, M., Clade, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Dodd, L., Douillet, A., Guellati, S., Hervieux, P. -A, Hilico, L., Indelicato, P., Janka, G., Jonsell, S., Karr, J. -P., Kim, B. H., Kim, E. S., Kim, S. K., Ko, Y., Kosinski, T., Kuroda, N., Latacz, B. M., Lee, B., Lee, H., Lee, J., Leitee, A. M. M., Leveque, K., Lim, E., Liszkay, L., Lotrus, P., Lunney, D., Manfredi, G., Mansoulie, B., Matusiak, M., Mornacchi, G., Nesvizhevsky, V., Nez, F., Niang, S., Nishi, R., Ohayon, B., Park, K., Paul, N., Perez, P., Procureur, S., Radics, B., Regenfus, C., Reymond, J. -M., Reynaud, S., Rousse, J. -Y., Rousselle, O., Rubbia, A., Rzadkiewicl, J., Sacquin, Y., Schmidt-Kaler, F., Staszczak, M., Szymczyk, K., Tanaka, T., Tuchming, B., Vallage, B., Voronin, A., van der Werf, D. P., Wolf, S., Won, D., Wronka, S., Yamazaki, Y., Yoo, K. H., Yzombard, P., Baker, C. J.

论文摘要

我们介绍了GBAR POSITRON(E+)捕获设备的描述,该设备由三阶段缓冲液陷阱(BGT)组成,然后是高场式笔架陷阱(HFT),并讨论其性能。 GBAR实验的总体目标是通过中和阳性抗溶质离子离子(H+)来衡量陆地重力场中中性抗原子(H)原子的加速度,该抗降解剂离子(H+)被冷却至低温,并观察随后的H灭绝后随后的H灭绝。为了产生一个H+离子,大约有10^10个正电子,有效地转换为正电子(PS),以及约10^7的抗蛋白酶(P)。由基于电子Linac的系统产生的正电子首先在BGT中累积,然后将它们堆叠在超高真空HFT中,在1100秒内,我们能够在1100秒内捕获1.4(2)x 10^9的positrons。

We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discuss its performance. The overall goal of the GBAR experiment is to measure the acceleration of the neutral antihydrogen (H) atom in the terrestrial gravitational field by neutralising a positive antihydrogen ion (H+), which has been cooled to a low temperature, and observing the subsequent H annihilation following free fall. To produce one H+ ion, about 10^10 positrons, efficiently converted into positronium (Ps), together with about 10^7 antiprotons (p), are required. The positrons, produced from an electron linac-based system, are accumulated first in the BGT whereafter they are stacked in the ultra-high vacuum HFT, where we have been able to trap 1.4(2) x 10^9 positrons in 1100 seconds.

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