Conveners
Working Group 3: Session 1a: RF Modelling
- Stefan Simrock (DESY)
Working Group 3: Session 1b: RF Software concepts (Control Systems, Architecture of LLRF, Subsystems, etc.)
- Stefan Simrock (DESY)
Working Group 3: Session 2a: RF Software Feedback and Applications
- Stefan Simrock (DESY)
Working Group 3: Session 2b: RF Control Operation (Automation, Procedures, Reliability)
- Stefan Simrock (DESY)
Description
The Convenor for this working group is Dr. Stefan Simrock and the Scientific Secretary Dr. Andy Butterworth.
The mini-oral presentations have been assigned to the different working groups, however the exact times of the presentations will be decided by the convenor at a later date. Note that oral presentations 39,42,50 will be presented in a joint session with working group 4 and are described there. Again the convenors will decide the timetable for this.
Mr
Tomasz Czarski
(Warsaw University of Technology Institute of Electronic Systems)
11/10/2005, 14:00
oral mini talk
The LLRF – Low Level Radio Frequency cavity control system is still under
development in order to regulate accelerating fields of the superconductive
resonators. The first testing of the cavity driving applying the FPGA (Field
Programmable Gate Array) technology have been carried out in DESY Hamburg. The
experiments focused attention to the general recognition of the cavity features...
Mark Prokop
(Los Alamos National Laboratory)
11/10/2005, 14:07
oral mini talk
The Los Alamos Neutron Science Center (LANSCE) proton accelerator is scheduled for
refurbishment starting in FY06. A new low level RF (LLRF) system is part of the
refurbishment plan since the existing LLRF system is analog-based and requires
significant setup and maintenance time. Both field and resonance control aspects
of the current system do not have the flexibility to meet...
Mr
waldemar koprek
(Warsaw University of Technology, DESY)
11/10/2005, 14:14
oral mini talk
The talk presents firmware and software for new LLRF control system called
SIMCON (SIMulator and CONtroller). The system is based on FPGA
technology and the firmware is written in VHDL. The simulator of
superconductive cavity and the controller of 1 and 8-cavity accelerating
module was made in FPGA. The firmware and software was tested in CHECHIA
and in ACC1 module in TTF2 in DESY with...
Dr
Claudio Rivetta
(SLAC)
11/10/2005, 14:21
oral mini talk
This paper presents the dynamic model and simulation of the beam-cavity interactions
in both LER and HER rings at PEP II. The motivation for development of this toll is
to explore the stability margins and performance limits of PEP II LLRF systems at
higher currents and possible upgraded RF configurations.
The simulation is a time-domain model, so that nonlinear elements in the klystron...
Dr
Stefan Simrock
(DESY), Dr
Valeri Ayvazyan
(DESY)
11/10/2005, 14:49
oral mini talk
In the RF system for the Vacuum Ultraviolet Free Electron Laser (VUV-FEL) Linac each
klystron supplies RF power to up to 32 cavities. The superconducting cavities are
operated in pulsed mode and high accelerating gradients close to the performance
limit. The RF control of the cavity fields to the level of 1e-4 for amplitude and
0.1 degree for phase however presents a significant technical...
Mr
Tomasz Filipek
(Warsaw University of Technology)
11/10/2005, 16:00
oral mini talk
Mr
Wojciech Cichalewski
(Technical University of Lodz)
12/10/2005, 14:00
oral mini talk
Mr
Wojciech Jalmuzna
(University of Technology, Warsaw)
12/10/2005, 14:20
oral mini talk
