Recent Developments from ASACUSA on Antihydrogen Detection
Jun 25, 20186 pages
Published in:
- EPJ Web Conf. 181 (2018) 01003
Contribution to:
- Published: Jun 25, 2018
Experiments:
View in:
Citations per year
Abstract: (EDP Sciences)
The ASACUSA Collaboration at CERNs Antiproton Decelerator aims to measure the ground state hyperfine splitting of antihydrogen with high precision to test the fundamental symmetry of CPT (combination of charge conjugation, parity transformation, and time reversal). For this purpose an antihydrogen detector has been developed. Its task is to count the arriving antihydrogen atoms and therefore distinguish backgroundevents (mainly cosmics) from antiproton annihilations originating from antihydrogen atoms which are produced only in small amounts. A central BGO crystal disk with position sensitive read-out detects the annihilation and a surrounding two-layered hodoscope is used for tracking charged secondaries. The hodoscope has been recently upgraded to allow precise vertex reconstruction. A machine learning analysis based on measured antiproton annihilations and cosmic rays has been developed to identify antihydrogen events.- ground state: hyperfine structure
- parity: transformation
- track data analysis: vertex
- antihydrogen
- anti-p p: annihilation
- hodoscope
- ASACUSA
- atom: (antihydrogen)
- detector: position sensitive
- cosmic radiation
References(16)
Figures(0)