Conveners
Characterization of individual components: I Microwaves
- Joe Woodford (National Instruments)
Characterization of individual components: II Magnetic Fields
- Carlo Petrone (CERN)
To reach a high accelerating gradient of 100 MV/m, the CLIC project under study at CERN uses a 23 cm long tapered normal-conducting travelling wave Accelerating Structure (AS) operating at 12 GHz. To preserve beam emittance at the 1 nm vertical-size collision point, 7 μm accuracy is required in the pre-alignment of the AS wrt the supporting girder. We have developed a dedicated test bench...
In the Advanced RF application on the NI platform presentation the following topics are covered:
• NI’s RF offering: overview of NI’s RF instruments, platforms and software tools
• PXIe-5668R: the widest band Vector Signal Analyser with Real-Time Spectrum Analysis capability. Supporting phase coherent applications and full bandwidth streaming.
• PXIe-5646R: The Vector Signal Transceiver...
Radio frequency resonant cavity beam position monitors (CBPMs) offer stable nano-meter scale (10s to 100s nm) resolution measurement of transverse beam positions in particle accelerators. The performance of these devices depends critically on system considerations, such as calibration and operation. This talk outlines the main issues with stably operating CBPMS, RF processing, calibration and...
The rotating coil is one of the preeminent methods used to characterize the magnets’ harmonics content and magnetic center. The rotating coil technique for magnetic measurements of accelerator magnets uses complex patterns of passive coil transducers with the aim to reach the most accurate and precise measurements.
Nowadays, the printed circuit boards (PCB) technology is the predominant...
To achieve the tight alignment requirements demanded for CLIC, its components need to be pre-aligned on a common support within the micrometer range. Among these components, the main beam quadrupoles will be pre-aligned with respect to their magnetic axis by using the vibrating-wire technique. The measurement method and the characteristics of the PACMAN stretched-wire system will be...
The talk will be mainly focused on the magnetic measurement techniques and systems used at the Paul Scherrer Institut (PSI) to characterize the field quality and qualify the magnetic elements (magnets and undulators) needed in the large scale facilities. In the frame work of the Swiss Free Electron laser (SwissFEL), the next facility in construction at PSI, the techniques for magnetic...
