Conveners
Alignment aspects of Linear Accelerators
- Missiaen Dominique (CERN)
Alignment aspects of Linear Accelerators
- Robert Ruland (SLAC National Accelerator Laboratory)
Dr
Tatsuya Kume
(KEK)
13/09/2012, 13:00
Alignment aspects of Linear Accelerators
Paper
We have studied to adopt a precise inclinometer for evaluating alignment of large particle accelerators. We had already evaluated the straightness of the approximately 70-m-long part of the KEK electron/positron linac, which corresponds to the single accelerator sector of the linac. The results had good reproducibility with the standard deviations of less than 49 micro meters and agreed with...
Mr
Christian Schwalm
(DESY)
13/09/2012, 13:25
Alignment aspects of Linear Accelerators
Paper
For the Alignment of the European XFEL, a Straight Line Reference System will be used for minimizing refraction effects that affect the geodetic reference network. In recent years, a SLRS has been developed at DESY that is based on Poisson Alignment principles. A prototype has been built, and first tests have been performed. However, a decisive factor for system performance is a good system...
Mr
Karsten Dreyer
(Paul Scherrer Institute PSI), Mr
Tino Hoewler
(Paul Scherrer Institute PSI)
13/09/2012, 13:50
Alignment aspects of Linear Accelerators
Paper
The new SwissFEL Accelerator is a free electron Laser which will be buildt at Paul Scherrer Institute (PSI) Villigen in Switzlerland. The design of the 700m accelerator consists of the Gun, Injector, C-Band LINAC and 2 Undulator lines. Start of building construction works is 2013, machine Installation will start at the beginning of 2015. 1st Beam is expected for End of 2016. A dedicated...
Dr
Helene Mainaud Durand
(CERN)
13/09/2012, 15:15
Alignment aspects of Linear Accelerators
Paper
The pre-alignmnet of CLIC consists in aligning the components of linacs and beam delivery systems (BDS) in the most accurate way possible, so that a first pilot beam can circulate and allow the implementation of the beam based alignment. Taking into account the precision and accuracy needed: 10 microns rms over sliding windows of 200m, this pre-alignment must be active and it can be divided...
Mr
Marco Esposito
(CERN)
13/09/2012, 15:40
Alignment aspects of Linear Accelerators
Paper
CLIC is a multi-TeV electron-positron linear collider currently under study at CERN. This accelerator will have a very high number of components. To reach the desired high luminosity, stringent alignment requirements should be satisfied, particularly for the Main Beam Quadrupoles (MBQ). An alignment stage will align the MBQ with micrometre resolution. Displacements due to ground motion and...
Dr
Helene Mainaud Durand
(CERN)
13/09/2012, 16:05
Alignment aspects of Linear Accelerators
Paper
The strategy of the CLIC pre-alignment relies on Wire Positioning Sensors (WPS) measuring the radial and vertical offsets with respect to a stretched wire. A precision below 2 um and an accuracy below 5 um over a whole range of measurement of 10 mm are required for these sensors. Two types of sensors, based on two different technologies are under development and study at CERN: the capacitive...