| Paper |
Title |
Page |
| TUAZ01 |
Overview of recent halo diagnosis and non-destructive beam profile monitoring
|
54 |
| |
- K. Wittenburg
DESY, Hamburg
|
|
| |
Beam profile (emittance) and beam halo are characteristic properties of high-intensity and high energy beams that might limit the performance of the adjacent accelerator. Therefore a reliable measurement and determination of these parameters is most helpful for understanding, tuning and improvement of the whole accelerator chain to achieve the best (at least the design-) performance. This talk will give an overview over recent instruments used for non-destructive beam profile and halo monitoring and will discuss their limits, experiences and latest improvements.
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|
| WEAZ05 |
Very Fast Beam Losses at HERA, and what has been done about it
|
215 |
| |
- K. Wittenburg, M. Werner
DESY, Hamburg
|
|
| |
During the Luminosity upgrade of HERA in 2000/2001 more than 50 new magnets were installed close to the interaction region to provide a stronger focussing of the two beams. Some of these magnets are located at very large values of the betatron function and therefore act with a large gain on the beam. Sudden changes in the power supply currents had led to very fast beam losses, creating quenches and increased radiation levels. This talk will discuss the improvements made to the HERA machine protection system to make sure that the beam is dumped in time in case of these events.
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|
| FRAP03 |
Summary of Working Group C+G (Part I)
|
365 |
| |
- N. V. Mokhov
Fermilab, Batavia, Illinois
- K. Hasegawa
JAEA, Ibaraki-ken
- S. Henderson
ORNL, Oak Ridge, Tennessee
- R. Schmidt
CERN, Geneva
- M. Tomizawa
KEK, Ibaraki
- K. Wittenburg
DESY, Hamburg
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|