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Freiburg 1999 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 54: Instrumentation und Anwendungen VI

HK 54.7: Gruppenbericht

Donnerstag, 25. März 1999, 15:45–16:00, F

The polarized Atomic Beam Source for the internal Gas Target at ANKE/COSY* — •A. Vassiliev1, R. Baldauf2, S. Barsov1, V. Grishina3, H. Kleines2, N. Koch4, L. Kondratyuk3, V. Koptev1, A. Kovalev1, S. Lorenz4, R. Maier5, M. Mikirtychiants6, M. Nekipelov6, V. Nelyubin1, F. Rathmann4,5, J. Sarkadi2, H. Paetz gen. Schieck7, O.W.B. Schult5, H. Seyfarth5, E. Steffens4, H.J. Stein5, C. Wilkin8, and K. Zwoll21Petersburg Nuclear Physics Institute, Russia — 2Zentrallabor f"ur Elektronik, FZ J"ulich — 3ITEP, Moscow, Russia — 4Physikalisches Institut II der Universit"at Erlangen-N"urnberg — 5Institut f"ur Kernphysik,FZ J"ulich — 6Diploma student from St. Petersburg State Technical University, St. Petersburg, Russia. — 7Institut f"ur Kernphysik, Universit"at zu K"oln — 8University College London, London, Great Britain

Among the processes to be studied at the recently commissioned ANKE facility at COSY is the deuteron breakup reaction with polarized beam and vector or tensor polarized target. The polarized internal gas target will be installed between the beam bending magnet D1 and the spectrometer magnet D2. The nuclear polarization is generated by a standard Stern-Gerlach type Atomic Beam Source ( ABS ). The status of the design and construc tion of the ABS will be reviewed together with selected aspects of the polarized experimental program of ANKE. Among the reactions being considered for detailed studies involving polarized beam and/or polarized target are: a) ppd π+ (pn π+), b) ppp K+ Λ and c) polarization observables in pd elastic scattering, which would provide the necessary data base for polarimetry of beam and target.

* supported by DFG under grant no. 436 RUS 113/430, BMBF under grant no. RUS-649-96 and the Russian Ministery of Science.

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