| Paper |
Title |
Page |
| MOPP001 |
Beam-Based Alignment for the CLIC Decelerator
|
547 |
| |
- E. Adli, D. Schulte
CERN, Geneva
|
|
| |
The CLIC Drive Beam decelerator requires the beam to be transported with very small losses. Beam-based alignment is necessary in order to achieve this, and various beam-based alignment schemes have been tested for the decelerator lattice. The decelerator beam has an energy spread of up to 90%, which impacts the performance of the alignment schemes. We have shown that Dispersion-Free-Steering works well for the decelerator lattice. However, because of the transverse focusing approach, modifications of the normal DFS schemes must be applied. Tune-up scenarios for the CLIC decelerator using beam-based alignment are also discussed.
|
|
| MOPP002 |
A Study of Failure Modes in the CLIC Decelerator
|
550 |
| |
- E. Adli, D. Schulte, I. Syratchev
CERN, Geneva
|
|
| |
The CLIC Drive Beam decelerator is responsible for producing the RF power for the main linacs, using Power Extraction and Transfer Structures (PETS). To provide uniform power production, the beam must be transported with very small losses. In the paper failure modes for the operation of the decelerator are investigated, and the impact on beam stability, loss level and machine protection issues is presented. Quadrupole failure, PETS inhibition and PETS break down scenarios are being considered.
|
|
| TUPD040 |
Design, Manufacturing and Tests of a Micrometer Precision Mover for CTF3 Quadrupoles
|
1517 |
| |
- F. Toral, C. Burgos, D. Carrillo, L. García-Tabarés, J. L. Gutierrez, I. Rodriguez, E. Rodríguez García, S. Sanz, C. Vazquez
CIEMAT, Madrid
- E. Adli, N. C. Chritin, S. Doebert, J. A. Rodriguez
CERN, Geneva
- J. Calero
CEDEX, Madrid
|
|
| |
A new remotely controlled moving table has been designed for the quadrupoles of the CTF3 Test Beam Line, as part of the beam based alignment system. This device must provide both vertical and horizontal (transverse to the beam) movements. The specifications request a reproducibility of ± 5 micron, with a resolution of 1 micron and a stroke of ± 4 mm. Due to the weight of the magnet, about 50 kg, and the space restrictions, a solution based on small stepping motors with integrated linear spindles has been chosen. The motor responsible of the vertical movement rests on a wedge, with a double purpose: to make the design more compact, and to increase the lifting force for a given motor size. Mechanical switches are used as end-of-movement sensors and home position detectors. The performed tests to check the mover prototype performance are also reported in this paper. Next step will be to launch series production, which will consist of 16 units.
|
|
| THPC018 |
Beam Dynamics Issues in the CLIC Long Transfer Line
|
3017 |
| |
- J. B. Jeanneret, E. Adli, A. Latina, G. Rumolo, D. Schulte, R. Tomas
CERN, Geneva
|
|
| |
Both the main beam and the drive beam of the CLIC project must be transported from the central production site to the head of the main linacs over more than twenty kilometres. Over such distances chromatic aberrations are substantial. With long distances and large beam currents, detuning and instabilities associated to ion production and multi-bunch resistive wall effects must also be considered. These effects are quantified and simulated. Based on these results, we propose a baseline design for these two lines.
|
|
| TUPP094 |
Recent Improvements in the Tracking Code PLACET
|
1750 |
| |
- A. Latina, H. Burkhardt, G. Rumolo, D. Schulte, R. Tomas
CERN, Geneva
- E. Adli
University of Oslo, Oslo
- Y. Renier
LAL, Orsay
|
|
| |
The Tracking Code PLACET has recently undergone several improvements. A redesign of its internal data structures and a new user interface based on the mathematical toolbox Octave have considerably expanded its simulation capabilities. Several new lattice elements, optimization algorithms and physics processes have been added to allow for more complete start-to-end simulations. The usage of the AML language and the Universal Parser Library extened its interfacing capability.
|
|