IBIC2012 - List of Keywords (survey)

Paper	Title	Other Keywords	Page
MOPB86	Betatron Tune Measurement and Automatic Correction Systems at NewSUBARU Storage Ring	operation, betatron, storage-ring, synchrotron	283
	S. Hashimoto, Y. Hamada, S. Miyamoto LASTI, Hyogo, Japan
	At the 1.5GeV electron storage ring NewSUBARU, the two different kinds of systems for measuring betatron tunes have been developed: the high precision tune monitor and that for automatic correction. The vertical and horizontal tunes can be observed during the user time, because a stripe-line kicker to enlarge the beam lifetime vertically shakes electron beams. The high-precision tune monitor has the resolution of 0.0002 and uses frequency analysis methods such as SRSA, zoom FFT, STFT, in addition to usual FFT. Tune shifts due to a slight difference of filling patterns during top-up operations can be observed with this monitor. The another tune monitoring and automatic-correcting system has been developed to compensate tune shifts caused by the decrease of the stored current, the difference of filling patterns during top-up operations, and the energy ramp from 1.0 to 1.5 GeV. This system estimates betatron tunes every 0.5 sec and can keep tunes to the optimal values. The system also has a tune survey function that can automatically measure the beam lifetime in a tune diagram.

TUPA29	Implementation of an FPGA Based System Survey and Diagnostic Reader with the Aim to Increase the System Dependability	diagnostics, interface, monitoring, FPGA	409
	M. Alsdorf, B. Dehning, M. Kwiatkowski, W. Viganò, C. Zamantzas CERN, Geneva, Switzerland
	The operation and machine protection of accelerators practically rely on their underlying instrumentation systems and a failure of any of those systems could pose a significant impact on the overall reliability and availability. In order to improve the detection and in some cases the prevention of failures, a survey mechanism could be integrated to the system that collects crucial information about the current system status through a number of acquisition modules. The implementation and integration of such a method is presented with the aim to standardize the implementation, where the acquisition modules share a common build and are connected through a standardized interface to a survey reader. The reader collects regularly data and controls the readout intervals. The information collected from these modules is used locally in the FPGA device to identify critical system failures and results in an immediate failsafe reaction with the data also transmitted and stored in external databases for offline analysis.

WEIB02	Review of Reliability Concepts Applied to Beam Loss Monitoring Systems	controls, detector, operation, monitoring	550
	B. Dehning CERN, Geneva, Switzerland
	Beam loss measurement systems are often used for the protection of equipment against the damage caused by impacting particles creating secondary showers and their energy dissipation in the matter. Depending on the acceptable consequences and the frequency of particle impact events on equipment reliability requirements are scaling accordingly. Increasing reliability often leads to more complex systems. The downside of complexity is a reduction of availability, therefore an optimum has to be found for these conflicting requirements. A detailed review of selected concepts and solutions from real-life examples will be given to show approaches used in various parts of the system from the sensors, signal processing, and software implementations up to the requirements for operation and documentation.
	Slides WEIB02 [4.609 MB]

Paper

Title

Other Keywords

Page

MOPB86

Betatron Tune Measurement and Automatic Correction Systems at NewSUBARU Storage Ring

operation, betatron, storage-ring, synchrotron

283

S. Hashimoto, Y. Hamada, S. Miyamoto
LASTI, Hyogo, Japan

At the 1.5GeV electron storage ring NewSUBARU, the two different kinds of systems for measuring betatron tunes have been developed: the high precision tune monitor and that for automatic correction. The vertical and horizontal tunes can be observed during the user time, because a stripe-line kicker to enlarge the beam lifetime vertically shakes electron beams. The high-precision tune monitor has the resolution of 0.0002 and uses frequency analysis methods such as SRSA, zoom FFT, STFT, in addition to usual FFT. Tune shifts due to a slight difference of filling patterns during top-up operations can be observed with this monitor. The another tune monitoring and automatic-correcting system has been developed to compensate tune shifts caused by the decrease of the stored current, the difference of filling patterns during top-up operations, and the energy ramp from 1.0 to 1.5 GeV. This system estimates betatron tunes every 0.5 sec and can keep tunes to the optimal values. The system also has a tune survey function that can automatically measure the beam lifetime in a tune diagram.

TUPA29

Implementation of an FPGA Based System Survey and Diagnostic Reader with the Aim to Increase the System Dependability

diagnostics, interface, monitoring, FPGA

409

M. Alsdorf, B. Dehning, M. Kwiatkowski, W. Viganò, C. Zamantzas
CERN, Geneva, Switzerland

The operation and machine protection of accelerators practically rely on their underlying instrumentation systems and a failure of any of those systems could pose a significant impact on the overall reliability and availability. In order to improve the detection and in some cases the prevention of failures, a survey mechanism could be integrated to the system that collects crucial information about the current system status through a number of acquisition modules. The implementation and integration of such a method is presented with the aim to standardize the implementation, where the acquisition modules share a common build and are connected through a standardized interface to a survey reader. The reader collects regularly data and controls the readout intervals. The information collected from these modules is used locally in the FPGA device to identify critical system failures and results in an immediate failsafe reaction with the data also transmitted and stored in external databases for offline analysis.

WEIB02

Review of Reliability Concepts Applied to Beam Loss Monitoring Systems

controls, detector, operation, monitoring

550

B. Dehning
CERN, Geneva, Switzerland

Beam loss measurement systems are often used for the protection of equipment against the damage caused by impacting particles creating secondary showers and their energy dissipation in the matter. Depending on the acceptable consequences and the frequency of particle impact events on equipment reliability requirements are scaling accordingly. Increasing reliability often leads to more complex systems. The downside of complexity is a reduction of availability, therefore an optimum has to be found for these conflicting requirements. A detailed review of selected concepts and solutions from real-life examples will be given to show approaches used in various parts of the system from the sensors, signal processing, and software implementations up to the requirements for operation and documentation.

Slides WEIB02 [4.609 MB]