TY  - JOUR
AU  - Fedorets, Pavel
AU  - Zheng, Chuan
AU  - Engin, Ilhan
AU  - Feilbach, Herbert
AU  - Giesen, Ulrich
AU  - Glückler, Harald
AU  - Kannis, Chrysovalantis
AU  - Klehr, Franz
AU  - Lennartz, Manfred
AU  - Pfeifer, Heinz
AU  - Schneider, Claus Michael
AU  - Schnitzler, Norbert
AU  - Soltner, Helmut
AU  - Swaczyna, Robert
AU  - Engels, Ralf
AU  - Büscher, Markus
AU  - Pfennigs, Johannes
TI  - A High-Density Polarized 3He Gas–Jet Target for Laser–Plasma Applications
JO  - Instruments
VL  - 6
IS  - 2
SN  - 2410-390X
CY  - Basel
PB  - MDPI
M1  - FZJ-2022-02885
SP  - 18 -
PY  - 2022
AB  - A laser-driven spin-polarized 3He2+-beam source for nuclear–physics experiments and for the investigation of polarized nuclear fusion demands a high-density polarized 3He gas-jet target. Such a target requires a magnetic system providing a permanent homogeneous holding field for the nuclear spins plus a set of coils for adjusting the orientation of the polarization. Starting from a transport vessel at a maximum pressure of 3 bar, the helium gas is compressed for a short time and can be injected into a laser–interaction chamber through a non-magnetic opening valve and nozzle, thus forming jets with densities of about a few 1019 cm−3 and widths of about 1 mm. The target comprises a 3D adjustment system for precise positioning of the jet relative to the laser focus. An auxiliary gas system provides remote target operation and flushing of the gas lines with Ar gas, which helps to reduce polarization losses. The design of the target, its operation procedures and first experimental results are presented.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.3390/instruments6020018
UR  - https://juser.fz-juelich.de/record/908871
ER  -