BIW2012 - List of Authors (Steinhagen, R.J.)

Paper

Title

Page

BPM Electronics Based on Compensated Diode Detectors - Results from Development Systems

44

M. Gasior, J. Olexa, R.J. Steinhagen
CERN, Geneva, Switzerland

High resolution beam position monitor (BPM) electronics based on diode peak detectors are being developed for processing signals from BPMs embedded into the future LHC collimators. Prototypes of such systems have been tested both in the laboratory and with beam signals from regular CERN-LHC BPMs and a collimator BPM installed in the CERN-SPS. Results from all these measurements are presented and discussed.

Poster MOPG010 [0.334 MB]

WEDP01

Wall-Current-Monitor based Ghost and Satellite Bunch Detection in the CERN PS and LHC accelerators

250

R.J. Steinhagen, S. Bart Pedersen, J.M. Belleman, T. Bohl, H. Damerau
CERN, Geneva, Switzerland

While most LHC detectors and instrumentation systems are optimised for a nominal bunch spacing of 25 ns, the LHC RF cavities themselves operate at at the 10th harmonic of the maximum bunch frequency. Due to the beam production scheme and transfers in the injector chain, part of the nominally 'empty' RF buckets may contain particles, referred to as ghost or satellite bunches. These populations must be accurately quantified for high-precision experiments, luminosity calibration and control of parasitic particle encounters at the four LHC interaction points. This contribution summarises the wall-current-monitor based ghost and satellite bunch measurements in CERN's PS and LHC accelerators. The instrumentation set-up, post-processing and achieved performance are all discussed.

Slides WEDP01 [5.364 MB]

Paper	Title	Page
MOPG010	BPM Electronics Based on Compensated Diode Detectors - Results from Development Systems	44
	M. Gasior, J. Olexa, R.J. Steinhagen CERN, Geneva, Switzerland
	High resolution beam position monitor (BPM) electronics based on diode peak detectors are being developed for processing signals from BPMs embedded into the future LHC collimators. Prototypes of such systems have been tested both in the laboratory and with beam signals from regular CERN-LHC BPMs and a collimator BPM installed in the CERN-SPS. Results from all these measurements are presented and discussed.
	Poster MOPG010 [0.334 MB]

WEDP01	Wall-Current-Monitor based Ghost and Satellite Bunch Detection in the CERN PS and LHC accelerators	250
	R.J. Steinhagen, S. Bart Pedersen, J.M. Belleman, T. Bohl, H. Damerau CERN, Geneva, Switzerland
	While most LHC detectors and instrumentation systems are optimised for a nominal bunch spacing of 25 ns, the LHC RF cavities themselves operate at at the 10th harmonic of the maximum bunch frequency. Due to the beam production scheme and transfers in the injector chain, part of the nominally 'empty' RF buckets may contain particles, referred to as ghost or satellite bunches. These populations must be accurately quantified for high-precision experiments, luminosity calibration and control of parasitic particle encounters at the four LHC interaction points. This contribution summarises the wall-current-monitor based ghost and satellite bunch measurements in CERN's PS and LHC accelerators. The instrumentation set-up, post-processing and achieved performance are all discussed.
	Slides WEDP01 [5.364 MB]