| Paper |
Title |
Page |
| TUPC059 |
An Emittance Evaluation Toolbox
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1191 |
| |
- D. A. Liakin
ITEP, Moscow
- P. Forck, T. Hoffmann
GSI, Darmstadt
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A long-time experience in emittance measurements and result evaluation at GSI were transformed into the set of the numerical instruments to perform basic and advanced data analysis for the data obtained in various emittance measurement devices. The common problems and differences between slit-grid-, pepper-pot- and longitudinal emittance data analysis are discussed. Some aspects of non-linear algorithms particularly for the case of non-zero slits or pepper-pot holes are presented.
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| TUPP127 |
Spill Structure Measurements at the Heidelberg Ion Therapy Centre
|
1824 |
| |
- A. Peters, R. Cee, T. Haberer, T. Winkelmann
HIT, Heidelberg
- T. Hoffmann, A. Reiter, M. Schwickert
GSI, Darmstadt
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A specially designed accelerator facility for tumour irradiation located at the Heidelberg University Hospital was built up, the commissioning is still ongoing. Technically the Heidelberg Ion Therapy Center (HIT) fully relies on the three dimensional intensity-controlled rasterscan technique developed at GSI. This method demands for smoothly extracted ion beams (from protons to oxygen) from the HIT synchrotron. For this purpose a RF knock-out system consisting of a RF-exciter in combination with an electrostatic septum, two septum magnets and two sextupoles is used. To characterize the extracted beams scintillators for low intensities and ionization chambers for higher currents are installed in the high energy transport lines. Using a PXI-based DAQ system full spills are recorded with a time bin of 100 μs. Typical raw data will be shown as well as derived statistics like Fourier spectra and maximum-to-average ratios that proof the beam quality for its applicability to produce outstanding dose distributions via beam scanning. In addition, safety aspects like the performance of the spill interrupt procedure will be demonstrated with measured data.
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