Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 27: Instrumentation IX
HK 27.6: Vortrag
Dienstag, 27. Februar 2018, 18:15–18:30, Audimax H1
High-resolution spectrometer in the R3B setup — •Sunji Kim, Thomas Aumann, and Heiko Scheit for the R3B collaboration — TU Darmstadt, Darmstadt, Germany
The international research facility FAIR is under construction for research on the nature of matter and the evolution of the universe. Among the four pillars of physics experiments at FAIR, NUSTAR Physics has a branch of R3B to develop a versatile reaction setup for kinematical complete measurements.
In the planned R3B setup, the High-resolution spectrometer (HRS) is one major part for the high-resolution measurement to obtain a relative momentum resolution of Δp/p∼10−4 with high beam energies at around 1 A GeV of medium and heavy mass nuclei. In knockout reactions and quasi-free scattering, the orbital angular momentum of the recoiling fragment can be deduced from the momentum distribution by comparison with the calculated ones. Here, to distinguish the momentum distributions for different orbital angular momenta, around 20-30 MeV/c momentum resolution in σ in the laboratory frame is needed, corresponding to Δp/p∼10−4. Therefore, the HRS, consisting of quadrupole triplets, dipoles, and tracking detectors, is being developed by simulations, and the status will be shown in the presentation.
This work is supported by the BMBF under contract number 05P15RDFN1 and the GSI-TU Darmstadt cooperation agreement.