TY - JOUR
T1 - Measurement of the lifetime of heavy λ hypernuclei with the recoil shadow method and internal targets in the storage ring COSY-Jülich
AU - Pysz, K.
AU - Zychor, I.
AU - Hermes, T.
AU - Hartmann, M.
AU - Ohm, H.
AU - Kulessa, P.
AU - Borgs, W.
AU - Koch, H. R.
AU - Maier, R.
AU - Prasuhn, D.
AU - Rudy, Z.
AU - Kamys, B.
AU - Cassing, W.
AU - Pfeiffer, J.
AU - Uozumi, Y.
AU - Jarczyk, L.
AU - Strzałkowski, A.
AU - Schult, O. W.B.
N1 - Funding Information:
We would like to thank Profs. H. Ejiri and C. Guaraldo for their encouragement, Profs. B. Schoch and J. Treusch for support of this work, M. Schädel for fruitful discussions, H.J. Stein for valuable advice regarding ion optics, and the COSY staff for delivering a good proton beam and effective cooperation in the experiment. Financial support from FFE and Forschungszentrum Jülich is gratefully acknowledged by K. Pysz. The project was also supported by the International Bureau at the DLR of the BMBF, Bonn, and the Polish Committee for Scientific Research (Grant No. 2 P03B 065 12).
PY - 1999/1/1
Y1 - 1999/1/1
N2 - For the measurement of the lifetime of the A hyperon in very heavy hypernuclei we have used proton projectiles for the production of strangeness and the recoil shadow method in the circulating beam of COSY-Jülich. This permitted us to use a very thin ribbon target without loss in luminosity. The target fabrication and frameless mounting is described in detail. A special mode of operating COSY was developed in order to bump the beam onto the target and to apply a supercycle. A description is given of the apparatus, tests, the calibration and the data analysis. As an example the p + Bi results are presented and discussed.
AB - For the measurement of the lifetime of the A hyperon in very heavy hypernuclei we have used proton projectiles for the production of strangeness and the recoil shadow method in the circulating beam of COSY-Jülich. This permitted us to use a very thin ribbon target without loss in luminosity. The target fabrication and frameless mounting is described in detail. A special mode of operating COSY was developed in order to bump the beam onto the target and to apply a supercycle. A description is given of the apparatus, tests, the calibration and the data analysis. As an example the p + Bi results are presented and discussed.
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U2 - 10.1016/S0168-9002(98)00784-0
DO - 10.1016/S0168-9002(98)00784-0
M3 - Article
AN - SCOPUS:0032759317
VL - 420
SP - 356
EP - 365
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-2
ER -