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NMR signal analysis in the large COMPASS $^{14}$NH$_{3}$ target
/ Koivuniemi, J (Ruhr U., Bochum) ; Gautheron, F (Ruhr U., Bochum) ; Hess, C (Ruhr U., Bochum) ; Kisselev, Y U (Ruhr U., Bochum) ; Meyer, W (Ruhr U., Bochum) ; Radtke, E (Ruhr U., Bochum) ; Reicherz, G (Ruhr U., Bochum) ; Doshita, N (Yamagata U.) ; Iwata, T (Yamagata U.) ; Kondo, K (Yamagata U.) et al.
In the large COMPASS polarized proton target the 1508 cm$^{3}$ of irradiated granular ammonia is polarized with dynamic nuclear polarization method using 4 mm microwaves in 2.5 T eld. [...]
2009. - 8 p.
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Spin Interactions and Cross-checks of Polarization in NH$_{3}$ Target
/ Kiselev, Yu (Ruhr U., Bochum) ; Baum, G (Bielefeld U.) ; Doshita, N (Yamagata U.) ; Gautheron, F (Ruhr U., Bochum ; Bielefeld U.) ; Hess, Ch (Ruhr U., Bochum) ; Iwata, T (Yamagata U.) ; Koivuniemi, J (Ruhr U., Bochum) ; Kondo, K (Yamagata U.) ; Magnon, A (DAPNIA, Saclay) ; Mallot, G (CERN) et al.
We study the magnetic structure of irradiated ammonia (NH$_{3}$) polarized by Dynamic Nuclear Polarization method at 0.2 K and at 2.5 T field. [...]
2008. - 7 p.
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Large COMPASS polarized solid state target for Drell-Yan physics
/ Koivuniemi, Jaakko Henrik (Ruhr U., Bochum (main)) ; Berlin, Alexander (Ruhr U., Bochum (main)) ; Gautheron, Fabrice (Ruhr U., Bochum (main)) ; Meyer, Werner (Ruhr U., Bochum (main)) ; Reicherz, Gerhard (Ruhr U., Bochum (main)) ; Doshita, Norihiro (Yamagata U.) ; Iwata, Takahiro (Yamagata U.) ; Kondo, Kaori (Yamagata U.) ; Nukazuka, Genki (Yamagata U.) ; Matousek, Jan (Charles U.) et al.
SISSA, 2015 - 7 p.
- Published in : PoS PSTP2015 (2015) 015
Published version from PoS: PDF; External link: PoS server
In : 16th International Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2015), Bochum, Germany, 14 - 18 Sep 2015, pp.015
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The large COMPASS polarized solid ammonia target for Drell–Yan measurements with a pion beam
/ Andrieux, V (Illinois U., Urbana (main)) ; Berlin, A (Ruhr U., Bochum) ; Doshita, N (Yamagata U.) ; Finger, M (Charles U.) ; Finger, M , Jr (Charles U.) ; Gautheron, F (Ruhr U., Bochum ; Illinois U., Urbana (main)) ; Horikawa, N (Chubu U.) ; Ishimoto, S (KEK, Tsukuba) ; Iwata, T (Yamagata U.) ; Kisselev, Y (Dubna, JINR) et al.
The transversely polarized target (PT) of the COMPASS (NA58) collaboration at CERN has been used for Drell–Yan measurements in 2015 and 2018. The transverse spin structure of the proton has been studied using a negative pion beam and a solid ammonia target. [...]
2022 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1025 (2022) 166069
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Polarized target at COMPASS
/ Doshita, Norihiro (Yamagata U.) ; Iwata, Takahiro (Yamagata U.) ; Kondo, Kaori (Yamagata U.) ; Miyachi, Yoshiyuki (Yamagata U.) ; Nukazuka, Genki (Yamagata U.) ; Reicherz, Gerhard (Ruhr U., Bochum) ; Meyer, Werner (Ruhr U., Bochum) ; Finger, Miroslav (Charles U.) ; Pesek, Michael (Charles U.) ; Horikawa, Naoaki (Chubu U.) et al.
The transversely polarized solid proton target was used in 2015 and 2018 for the polarized Drell- Yan experiment at the first in the world with a 10$^8$ /s intensity of 190 GeV pion beam at COM- PASS. Because of the radiation damage, the deterioration of the proton relaxation time of NH$_3$ was observed over more than 6 months data taking period. [...]
SISSA, 2020 - 6 p.
- Published in : PoS PSTP2019 (2020) 049
Fulltext: PDF;
In : 18th International Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019), Knoxville, United States, 23 - 27 Sep 2019, pp.049
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Future plannings for the COMPASS polarized target
/ Reicherz, Gerhard (Ruhr U., Bochum) ; Doshita, Norihiro (Yamagata U.) ; Finger, Miroslav (Charles U.) ; Iwata, Takahiro (Yamagata U.) ; Kisselev, Yury Timofeevich (Dubna, JINR) ; Koivuniemi, Jaakko Henrik (Illinois U., Urbana (main)) ; Kondo, Kaori (Yamagata U.) ; Nukazuka, Genki (Yamagata U.) ; Matousek, Jan (Charles U., Prague (main)) ; Meyer, Werner (Ruhr U., Bochum) et al.
The COMPASS collaboration performed a polarized Drell-Yan program to measure TMD (Transverse Momentum Dependent) and PDFs (Parton Distribution Functions) in 2015. We will carry out the program for one more year in 2018 to improve the statistics. [...]
SISSA, 2018 - 6 p.
- Published in : PoS: PSTP2017 (2018) , pp. 004
Fulltext: PDF; External link: PoS server
In : 17th International Workshop on Polarized Sources, Targets, and Polarimetry, Kaist, South Korea, 16 - 20 Oct 2017, pp.004
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Nuclear magneto-mechanical effect at negative spin polarization
/ Kiselev, Y F (Dubna, JINR) ; Gautheron, F (Ruhr U., Bochum) ; Koivuniemi, J (Ruhr U., Bochum) ; Meyer, W (Ruhr U., Bochum) ; Doshita, N (Yamagata U.) ; Matsuda, H (Yamagata U.) ; Srnka, A (Inst. Sci. Instruments, Brno)
If the magnetic properties of electrons and nuclear spins are widely used in applications, to our knowledge, the mechanical resonance of nuclear spins has not been observed yet. [...]
2011. - 4 p.
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Polarised target for Drell-Yan experiment in COMPASS at CERN, part I
/ Matousek, J. (Charles U.) ; Finger, M. (Charles U.) ; Finger, M., Jr. (Charles U.) ; Pesek, M. (Charles U.) ; Berlin, A. (Ruhr U., Bochum) ; Gautheron, F. (Ruhr U., Bochum) ; Meyer, W. (Ruhr U., Bochum) ; Reicherz, G. (Ruhr U., Bochum) ; Doshita, N. (Yamagata U.) ; Iwata, T. (Yamagata U.) et al.
In the polarised Drell-Yan experiment at the COMPASS facility in CERN pion beam with momentum of 190 GeV/c and intensity about $10^8$ pions/s interacted with transversely polarised NH$_3$ target. [...]
arXiv:1709.06833.
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2017. - 4 p.
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The Bochum Polarized Target
/ Reicherz, G (Ruhr U., Bochum) ; Görtz, S (Ruhr U., Bochum) ; Harmsen, J (Ruhr U., Bochum) ; Heckmann, J (Ruhr U., Bochum) ; Meier, A (Ruhr U., Bochum) ; Meyer, W (Ruhr U., Bochum) ; Radtke, E (Ruhr U., Bochum)
2000
- Published in : AIP Conf. Proc.: 570 (2000) , pp. 896
External link: Published version from AIP
In : 14th International Spin Physics Symposium, Osaka, Japan, 16 - 21 Oct 2000, pp.896
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