SRF2015 - List of Keywords (FPGA)

Paper	Title	Other Keywords	Page
TUPB097	The Study on Microphonics of Low Beta HWR Cavity at IMP	cavity, LLRF, cryomodule, SRF	837
	Z. Gao, W. Chang, Y. He, W.M. Yue, S.H. Zhang, Z.L. Zhu IMP/CAS, Lanzhou, People's Republic of China Q. Chen IHEP, Beijing, People's Republic of China T. Powers JLab, Newport News, Virginia, USA
	The superconducting linac of China Accelerator-Driven System Injector II will operate at CW-mode. The mechanical vibrations of the superconducting cavity, also known as microphonics, cause shifts in the resonant frequency of the cavity. The microphonics is the main disturbance source of cavity frequency shifts when the cavity running in CW mode. In order to understand the effects, microphonics measurements were performed on the half-wave superconducting cavities when they were operated in the cryostat. And the experimental modal test was also performed to identify noise source and improve the cavity structure optimization. The measurement method and results will be shown and analyzed in this paper.
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THPB080	Next Generation Cavity and Coupler Interlock for the European XFEL	operation, vacuum, interface, timing	1316
	D. Tischhauser, A. Gössel, M. Mommertz DESY, Hamburg, Germany
	The safe operation of cavities and couplers in the European XFEL accelerator environment is secured by a new technical interlock (TIL) design, which is based on the XFEL crate standard (MTCA(TM).4). The new interlock is located inside the accelerator tunnel. Several remote test capabilities ensure the correct operation of sensors for light, temperature and free electrons. Due to the space costs and the very high number of channels, the electronic concept was moved from a conservative, mostly analog electronic approach, with real comparators and thresholds, to a concept, where the digitizing of the signals is done at a very early stage. Filters, thresholds and comparators are moved into the digital part. The usage of an FPGA and an additional watchdog increase the flexibility dramatically, with respect to be as reliable as possible. An overview of the system is shown. MTCA (Micro Telecommunications Computing Architecture) is a standard defined by the PCI Industrial Computer Manufacturers Group (PICMG, www.picmg.org).
	Poster THPB080 [1.123 MB]
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Paper

Title

Other Keywords

Page

TUPB097

The Study on Microphonics of Low Beta HWR Cavity at IMP

cavity, LLRF, cryomodule, SRF

837

Z. Gao, W. Chang, Y. He, W.M. Yue, S.H. Zhang, Z.L. Zhu
IMP/CAS, Lanzhou, People's Republic of China
Q. Chen
IHEP, Beijing, People's Republic of China
T. Powers
JLab, Newport News, Virginia, USA

The superconducting linac of China Accelerator-Driven System Injector II will operate at CW-mode. The mechanical vibrations of the superconducting cavity, also known as microphonics, cause shifts in the resonant frequency of the cavity. The microphonics is the main disturbance source of cavity frequency shifts when the cavity running in CW mode. In order to understand the effects, microphonics measurements were performed on the half-wave superconducting cavities when they were operated in the cryostat. And the experimental modal test was also performed to identify noise source and improve the cavity structure optimization. The measurement method and results will be shown and analyzed in this paper.

Export •

reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

THPB080

Next Generation Cavity and Coupler Interlock for the European XFEL

operation, vacuum, interface, timing

1316

D. Tischhauser, A. Gössel, M. Mommertz
DESY, Hamburg, Germany

The safe operation of cavities and couplers in the European XFEL accelerator environment is secured by a new technical interlock (TIL) design, which is based on the XFEL crate standard (MTCA(TM).4). The new interlock is located inside the accelerator tunnel. Several remote test capabilities ensure the correct operation of sensors for light, temperature and free electrons. Due to the space costs and the very high number of channels, the electronic concept was moved from a conservative, mostly analog electronic approach, with real comparators and thresholds, to a concept, where the digitizing of the signals is done at a very early stage. Filters, thresholds and comparators are moved into the digital part. The usage of an FPGA and an additional watchdog increase the flexibility dramatically, with respect to be as reliable as possible. An overview of the system is shown.
MTCA (Micro Telecommunications Computing Architecture) is a standard defined by the PCI Industrial Computer Manufacturers Group (PICMG, www.picmg.org).

Poster THPB080 [1.123 MB]

Export •

reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)