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@INPROCEEDINGS{Ptz:1046978,
author = {Pütz, Simon Jakob and Engels, Ralf W. and Faatz, Nicolas
and Kannis, Chrysovalantis and Gebel, Ralf and Grigoryev,
Kirill and Valdau, Yury and El-Kordy, Tarek},
title = {{P}olarimetry of pulsed {H}$^−$/{D}$^−$ ion beams:
{E}xtended applicability of the {L}amb-shift polarimeter},
school = {Universität Köln},
reportid = {FZJ-2025-04046},
year = {2025},
abstract = {Until 2023, a polarized H$^−$/D$^−$ ion source
delivered pulsed negative ion beams for stripping injection
into the COSY accelerator. Accurate and efficient
measurement of the nuclear spin polarization directly behind
the source is essential for precision experiments at COSY. A
data acquisition system was developed to enable reliable,
automated measurements with improved efficiency and to
reduce operator intervention. To achieve that, the
applicability of the Lamb-shift polarimeter has been
successfully expanded to include pulsed H$^−$ and D$^−$
ion beams. The presented setup is useful and suitable to
determine and optimize the polarization of upcoming
polarized sources of the COSY type without pre-acceleration.
We also present additional measurements of the nuclear spin
polarization of H$^+_3$ ion beams with a Lamb-shift
polarimeter.},
month = {Sep},
date = {2025-09-21},
organization = {26th International Symposium on Spin
Physics, Qingdao (Peoples R China), 21
Sep 2025 - 26 Sep 2025},
subtyp = {Other},
cin = {IKP-2},
cid = {I:(DE-Juel1)IKP-2-20111104},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / DFG
project G:(GEPRIS)533904660 - Eine vielseitige
Polarisationsmethode für Teilchen mit einfachen
Hyperfeinstrukturen (533904660)},
pid = {G:(DE-HGF)POF4-612 / G:(GEPRIS)533904660},
typ = {PUB:(DE-HGF)6},
doi = {10.34734/FZJ-2025-04046},
url = {https://juser.fz-juelich.de/record/1046978},
}