| Paper |
Title |
Page |
| TUPCH010 |
Profile Measurement by Beam Induced Fluorescence for 60 MeV/u to 750 MeV/u Heavy Ion Beams
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1013 |
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- P. Forck, C. Andre, F. Becker, H. Iwase
GSI, Darmstadt
- D. Hoffmann
TU Darmstadt, Darmstadt
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At the planned heavy ion facility FAIR very intense beams of heavy ions will be transported between various synchrotrons and focused on targets for secondary ion productions. For the transverse profile determination only non-destructive methods are suited due to the large deposed beam power. We investigated experimentally the Beam Induced Fluorescence (BIF) method. Due to the atomic collision by the beam ions the residual gas N2 is excited to fluorescence levels. Single photon detection is performed by a double MCP image intensifier coupled to a digital CCD camera. Extensive experimental studies (with the today available lower ion currents) were performed to determine the photon yield and the background contribution for different ion species and beam energies. The measured profiles show a good correspondence to other methods as long as the vacuum pressure by a regulated N2 inlet is below 10-1 mbar. Based on the experimental results, the layout for a BIF profile determination will be discussed.
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| TUPLS141 |
Measured Residual Radioactivity Induced by U Ions of Energy 500 MeV/u in a Cu Target
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1834 |
| |
- E. Mustafin, H. Iwase, E. Kozlova, D. Schardt
GSI, Darmstadt
- A. Fertman, A. Golubev
ITEP, Moscow
- R. Hinca, M. Pavlovic, I. Strasik
STU, Bratislava
- N. Sobolevskiy
RAS/INR, Moscow
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Several laboratories in the world have started or plan to build new powerful ion accelerators. These facilities promise to provide very valuable tools for experiments in fundamental nuclear physics, physics of high energy density in matter and for medical applications as well. One of the most important problems that have to be solved during the design stage is the radiation protection of the accelerator. Due to the complexity, it is hardly possible to obtain reliable radionuclide production data for accelerator structure materials from radiation transport codes. Thus, the experimental data which can be measured at the presently existing facilities are necessary for the evaluation of the induced levels of radioactivity around intense heavy ion accelerators. The Uranium beam losses are the most dangerous ones in the FAIR facility. Results of the measurement of activation induced by U beam with energy of E = 500 MeV/u in the copper target are presented in this paper.
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