Commissioning of the hypertriton binding energy measurement at MAMI
oleh: Eckert Philipp, Achenbach Patrick, Akiyama Takeru, Chen Jinhui, Distler Michael O., Esser Anselm, Geratz Julian, Helmel Christian, Hoek Michael, Itabashi Kosuke, Kaneta Masashi, Kino Ryoko, Klag Pascal, Ma Yu-Gang, Merkel Harald, Mizuno Masaya, Müller Ulrich, Nagao Sho, Nakamura Satoshi N., Nakamura Yuki R., Okuyama Kazuki, Pochodzalla Josef, Schlimme Björn Sören, Sfienti Concettina, Shao Tianhao, Steinen Marcell, Tachibana Koga, Thiel Michaela, Toyama Yuichi, Uehara Keita
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2022-01-01 |
Deskripsi
A high-precision hypernuclear experiment has been commissioned at the Mainz Microtron (MAMI) to determine the hypertriton Λ binding energy via decay-pion spectroscopy. The method has been successfully pioneered with 4ΛH studies in the last decade. The experiment makes use of a novel high luminosity lithium target with a length of 45mm while being only 0.75mm thick to keep momentum smearing of the decay pions low. The target-to-beam alignment as well as the observation of the deposited heat is achieved with a newly developed thermal imaging system. Together with a precise beam energy determination via the undulator light interference method a recalibration of the magnetic spectrometers will be done to obtain a statistical and systematic error of about 20 keV. The experiment started in the summer of 2022 and initial optimization studies for luminosity and data quality are presented.