Conveners
Session 8
- Morten Jensen (Diamond Light Source)
Dr
Yoon Kang
(Oak Ridge National Laboratory)
11/05/2012, 08:00
Oral
A four-way waveguide RF power distribution system for testing the SNS multi-cavity cryomodule to investigate the collective behavior has been developed. A single klystron operating at 805MHz in 60Hz 8% duty cycle powers the 4-way waveguide splitter to deliver up to 600 kW to Individual cavities. Each cavity is fed through a waveguide vector modulator at each splitter output with magnitude and...
Dr
Nikolai Schwerg
(CERN)
11/05/2012, 08:30
Oral
The low-level RF system for LHC and Linac4 relies on the accurate readings of waveguide directional couplers as well as the cavity antenna measurements. A good calibration of both is crucial for an effective regulation.
We briefly revise the working principle of waveguide directional couplers and illustrate the coupler calibration process. Inevitable standing waves in the calibration setup...
Dr
Daniel Valuch
(CERN)
11/05/2012, 09:00
Oral
During operation, the LHC high power RF equipment has to be protected from damage caused by electromagnetic discharges (arcs). The LHC waveguide arc detector system is based on the optical detection of the discharge through small apertures in the waveguide walls, optical fibres and very sensitive photo detectors.
Experience shows that some of the currently used optical fibres suffer from...
Dr
Alessandro Fabris
(Sincrotrone Trieste)
11/05/2012, 09:30
Oral
FERMI@Elettra is a single-pass linac-based FEL user-facility covering the wavelength range from 100 nm (12 eV) to 4 nm (310 eV) and is located next to the third generation synchrotron radiation facility Elettra in Trieste, Italy. The machine is presently under commissioning and the first FEL line (FEL-1) will be opened to the users by the end of 2012. The 1.5 GeV linac is based on S-band...
