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Polarization measurement in the COMPASS polarized target
Continuous wave nuclear magnetic resonance (NMR) is used to determine the target polarization in the COMPASS experiment. The system is made of the so-called Liverpool Q-meters, Yale-cards, and VME modules for data taking and system controlling. In 2001 the NMR coils were embedded in the target mater...
| Autores principales: | , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.nima.2004.03.153 http://cds.cern.ch/record/816647 |
| _version_ | 1780905419751817216 |
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| author | Kondo, K Ball, J Baum, G Berglund, P Doshita, N Gautheron, F Görtz, S Hasegawa, T Horikawa, N Ishimoto, S Iwata, T Kisselev, Yu V Koivuniemi, J H Le Goff, J M Magnon, A Meyer, W Reicherz, G Matsuda, T |
| author_facet | Kondo, K Ball, J Baum, G Berglund, P Doshita, N Gautheron, F Görtz, S Hasegawa, T Horikawa, N Ishimoto, S Iwata, T Kisselev, Yu V Koivuniemi, J H Le Goff, J M Magnon, A Meyer, W Reicherz, G Matsuda, T |
| author_sort | Kondo, K |
| collection | CERN |
| description | Continuous wave nuclear magnetic resonance (NMR) is used to determine the target polarization in the COMPASS experiment. The system is made of the so-called Liverpool Q-meters, Yale-cards, and VME modules for data taking and system controlling. In 2001 the NMR coils were embedded in the target material, while in 2002 and 2003 the coils were mounted on the outer surface of the target cells to increase the packing factor of the material. Though the error of the measurement became larger with the outer coils than with the inner coils, we have performed stable measurements throughout the COMPASS run time for 3 years. The maximum polarization was +57% and -53% as the average in the target cells. |
| id | cern-816647 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2004 |
| record_format | invenio |
| spelling | cern-8166472019-09-30T06:29:59Zdoi:10.1016/j.nima.2004.03.153http://cds.cern.ch/record/816647engKondo, KBall, JBaum, GBerglund, PDoshita, NGautheron, FGörtz, SHasegawa, THorikawa, NIshimoto, SIwata, TKisselev, Yu VKoivuniemi, J HLe Goff, J MMagnon, AMeyer, WReicherz, GMatsuda, TPolarization measurement in the COMPASS polarized targetDetectors and Experimental TechniquesContinuous wave nuclear magnetic resonance (NMR) is used to determine the target polarization in the COMPASS experiment. The system is made of the so-called Liverpool Q-meters, Yale-cards, and VME modules for data taking and system controlling. In 2001 the NMR coils were embedded in the target material, while in 2002 and 2003 the coils were mounted on the outer surface of the target cells to increase the packing factor of the material. Though the error of the measurement became larger with the outer coils than with the inner coils, we have performed stable measurements throughout the COMPASS run time for 3 years. The maximum polarization was +57% and -53% as the average in the target cells.oai:cds.cern.ch:8166472004 |
| spellingShingle | Detectors and Experimental Techniques Kondo, K Ball, J Baum, G Berglund, P Doshita, N Gautheron, F Görtz, S Hasegawa, T Horikawa, N Ishimoto, S Iwata, T Kisselev, Yu V Koivuniemi, J H Le Goff, J M Magnon, A Meyer, W Reicherz, G Matsuda, T Polarization measurement in the COMPASS polarized target |
| title | Polarization measurement in the COMPASS polarized target |
| title_full | Polarization measurement in the COMPASS polarized target |
| title_fullStr | Polarization measurement in the COMPASS polarized target |
| title_full_unstemmed | Polarization measurement in the COMPASS polarized target |
| title_short | Polarization measurement in the COMPASS polarized target |
| title_sort | polarization measurement in the compass polarized target |
| topic | Detectors and Experimental Techniques |
| url | https://dx.doi.org/10.1016/j.nima.2004.03.153 http://cds.cern.ch/record/816647 |
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