| Paper |
Title |
Page |
| MOPC116 |
On the Possibility of Realizing Shortest Bunches in Low-energy Storage Rings
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334 |
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- A. I. Papash, K.-U. Kuehnel, C. P. Welsch
MPI-K, Heidelberg
- A. A. Alzeanidi, M. O.A. El Ghazaly
KACST, Riyadh
- A. I. Papash
JINR, Dubna, Moscow Region
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For some very interesting experiments in future low-energy storage rings it is highly desirable to realize ultra-short bunches in the nanosecond regime. These bunches could then be used for collision studies with atomic or molecular gas jet targets where the time structure of the bunches would be used as a trigger for the experiment. Thus, the control of the longitudinal time structure of the stored beam is of central importance since it directly determines the resolution of the envisaged experiments. Since many years, it has been a significant challenge for the storage ring accelerator-physics community to develop techniques to reduce the duration of bunches. Up to now, all methods that have been developed go along with various difficulties, which can include reduced stored-beam lifetimes. Thus, novel and innovative concepts for the manipulation and control of the longitudinal beam structure have to be developed. In this paper, novel approaches to realize shortest bunches in storage rings are presented.
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| THPP016 |
Preliminary Design of a Highly-flexible Extraction Scheme for the USR
|
3407 |
| |
- Ph. Schmid, K.-U. Kuehnel, C. P. Welsch
MPI-K, Heidelberg
- A. I. Papash
JINR, Dubna, Moscow Region
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In the future Facility for Low-energy Antiproton and Ion Research (FLAIR) at GSI, the Ultra-low energy electrostatic Storage Ring (USR) will provide cooled beams of antiprotons and possibly also highly charged ions down to energies of only 20 keV/q. Beams with small momentum spread and low emittance will enable a wide range of hitherto impossible experiments. The large variety of planned experiments requires a highly flexible longitudinal time structure of the extracted bunches, ranging from ultra-short pulses in the nanosecond regime to quasi DC beams. In this contribution, a preliminary design of the extraction scheme is presented. Furthermore, possible solutions for the compensation of effects from the extraction region on the very-low energy beam are shown, including results from beam transport calculations.
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| THPP015 |
Design of a Versatile Injector for a Low-energy Experimental Platform at KACST
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3404 |
| |
- M. O.A. El Ghazaly, A. A. Alzeanidi
KACST, Riyadh
- V. Aleksandrov
JINR, Dubna, Moscow Region
- A. I. Papash
MPI-K, Heidelberg
- C. P. Welsch
GSI, Darmstadt
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At the National Centre for Mathematics and Physics (NCMP), at the King Abdulaziz City for Science and Technology (KACST), Saudi Arabia, a multi-purpose low-energy experimental platform is presently being developed in collaboration with the University of Heidelberg, Germany. The aim of this project is to enable a multitude of low-energy experiments with most different kinds of ions both in single pass setups, but also with ions stored in a low-energy electrostatic storage ring. In this contribution, the injector of this complex is presented. It was designed to provide beams with energies up to 30 kV/q and will allow for switching between different ion sources from e.g. duoplasmatron to electrospray ion sources and to thus provide the users with a wide range of different beams. We present the overall layout of the injector with a focus on the optical design and the foreseen diagnostic elements.
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