Volume 346 - 23rd International Spin Physics Symposium (SPIN2018) - Parallel Session: Polarized Ion and Lepton Sources and Targets (K. Aulenbacher and C. Keith)
COMPASS polarized target in 2018 and 2021
G. Reicherz,* W. Meyer, N. Doshita, T. Iwata, K. Kondo, G. Nukazuka, M. Finger, J. Matousek, M. Pesek, J. Koivuniemi, Y. Kisselev
*corresponding author
Full text: pdf
Pre-published on: 2019 August 19
Published on: 2019 August 23
Abstract
The COMPASS collaboration performed a polarized Drell-Yan program to measure TMD (Transverse Momentum Dependent) and PDFs (Parton Distribution Functions) in 2015. The program was performed for one more year in 2018 to improve the statistics. In the Drell-Yan program a negative pion beam of 190 GeV/c with an intensity of $10^8$ /s will be scattered on a transversely polarized proton target with a length of 110 cm. We also plan to use a transversely polarized deuteron target for SIDIS (Semi-Inclusive-Deep-Inelastic-Scattering) program with muon beam in 2021 just after a long shut down of the CERN accelerators.
We will present the improved COMPASS PT system for the 2018 run and present the future plan of the deuteron target in 2021.
DOI: https://doi.org/10.22323/1.346.0097
Open Access
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