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Polarized target at COMPASS
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 obse...
| Autores principales: | , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
SISSA
2020
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.22323/1.379.0049 http://cds.cern.ch/record/2799881 |
| _version_ | 1780972589897744384 |
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| author | Doshita, Norihiro Iwata, Takahiro Kondo, Kaori Miyachi, Yoshiyuki Nukazuka, Genki Reicherz, Gerhard Meyer, Werner Finger, Miroslav Pesek, Michael Horikawa, Naoaki Suzuki, Hajime Koivuniemi, Jaakko Henrik Kisselev, Yuri Ishimoto, Shigeru Pires, Christophe Matsuda, Tatsuro |
| author_facet | Doshita, Norihiro Iwata, Takahiro Kondo, Kaori Miyachi, Yoshiyuki Nukazuka, Genki Reicherz, Gerhard Meyer, Werner Finger, Miroslav Pesek, Michael Horikawa, Naoaki Suzuki, Hajime Koivuniemi, Jaakko Henrik Kisselev, Yuri Ishimoto, Shigeru Pires, Christophe Matsuda, Tatsuro |
| author_sort | Doshita, Norihiro |
| collection | CERN |
| description | 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. The radiation also affected the cryogenics control system in 2015. The radiation shield was improved and any incidents on the ra- diation was not observed in 2018. The transversely polarized deuteron target will be applied in 2021 with a muon beam of 160 GeV for Transversity and Sivers parton distribution functions measurements. A cooling test of the polarized target system will be performed in 2020. |
| id | cern-2799881 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| publisher | SISSA |
| record_format | invenio |
| spelling | cern-27998812022-01-20T21:41:19Zdoi:10.22323/1.379.0049http://cds.cern.ch/record/2799881engDoshita, NorihiroIwata, TakahiroKondo, KaoriMiyachi, YoshiyukiNukazuka, GenkiReicherz, GerhardMeyer, WernerFinger, MiroslavPesek, MichaelHorikawa, NaoakiSuzuki, HajimeKoivuniemi, Jaakko HenrikKisselev, YuriIshimoto, ShigeruPires, ChristopheMatsuda, TatsuroPolarized target at COMPASSAccelerators and Storage RingsThe 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. The radiation also affected the cryogenics control system in 2015. The radiation shield was improved and any incidents on the ra- diation was not observed in 2018. The transversely polarized deuteron target will be applied in 2021 with a muon beam of 160 GeV for Transversity and Sivers parton distribution functions measurements. A cooling test of the polarized target system will be performed in 2020.SISSAoai:cds.cern.ch:27998812020 |
| spellingShingle | Accelerators and Storage Rings Doshita, Norihiro Iwata, Takahiro Kondo, Kaori Miyachi, Yoshiyuki Nukazuka, Genki Reicherz, Gerhard Meyer, Werner Finger, Miroslav Pesek, Michael Horikawa, Naoaki Suzuki, Hajime Koivuniemi, Jaakko Henrik Kisselev, Yuri Ishimoto, Shigeru Pires, Christophe Matsuda, Tatsuro Polarized target at COMPASS |
| title | Polarized target at COMPASS |
| title_full | Polarized target at COMPASS |
| title_fullStr | Polarized target at COMPASS |
| title_full_unstemmed | Polarized target at COMPASS |
| title_short | Polarized target at COMPASS |
| title_sort | polarized target at compass |
| topic | Accelerators and Storage Rings |
| url | https://dx.doi.org/10.22323/1.379.0049 http://cds.cern.ch/record/2799881 |
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