The Production and Study of Cold Antiprotons and Antihydrogen

Gabrielse, Gerald

doi:10.21236/ada626745

Cited by 1 publication

(2 citation statements)

References 23 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation (4.4) shows that h should be smaller than ≈ h max /2π for the shaping device to improve the resolution of the experiment. We choose as an example h = 1 mm, so that the statistics is N ≈ 3.3 × 10 3 . The opening radius has to be smaller than r max 3.2 √ ε mm and the disk radius should be larger than R min 13 √ ε mm.…”

Section: Estimation Of Statistical Uncertaintymentioning

confidence: 99%

See 1 more Smart Citation

Shaping the distribution of vertical velocities of antihydrogen in GBAR

et al. 2014

View full text Add to dashboard Cite

GBAR is a project aiming at measuring the freefall acceleration of gravity for antimatter, namely antihydrogen atoms (H). The precision of this timing experiment depends crucially on the dispersion of initial vertical velocities of the atoms as well as on the reliable control of their distribution. We propose to use a new method for shaping the distribution of the vertical velocities of H, which improves these factors simultaneously. The method is based on quantum reflection of elastically and specularly bouncing H with small initial vertical velocity on a bottom mirror disk, and absorption of atoms with large initial vertical velocities on a top rough disk. We estimate statistical and systematic uncertainties, and we show that the accuracy for measuring the free fall acceleration g of H could be pushed below 10 −3 under realistic experimental conditions.

show abstract

Section: Estimation Of Statistical Uncertaintymentioning

confidence: 99%

“…A promising experimental method to do so consists in producing sufficiently cold antihydrogen atoms (H) and timing their free fall in the Earth's gravity field. This approach is being pursued by AEGIS [1], ATHENA-ALPHA [2], ATRAP [3] and GBAR [4] collaborations.…”

Section: Introductionmentioning

confidence: 99%