B. Dehning

Publication List Details

Period

1990 - 2009

Number

128

Co-Authors

Accuracy of LHC Proton Loss Rate Determination by the BPM System (2009)

Dehning, B, Fabjan, CW, Holzer, EB, Kramer, D, Sapinski, M, Stockner, M

Most of the monitors of the LHC beam loss monitoring (BLM) system are installed on the outside of the magnet cryostats, around the quadrupole magnets. Their aim is to prevent quenches and to protect...

Operational Experience with a LHC Collimator Prototype in the CERN SPS (2009)

Redaelli, S, Aberle, O, Assmann, R, Dehning, B, Bracco, C, Jonker, M, ...

A full-scale prototype of the Large Hadron Collider (LHC) collimator was installed in 2004 in the CERN Super Proton Synchrotron (SPS) and has been extensively used for beam tests, for control tests...

First Beam Based Aperture Measurements in the Arcs of the CERN Large Hadron Collider (2009)

Redaelli, S, Agapov, I, Calaga, R, Dehning, B, Giovannozzi, M, Roncarolo, F, ...

The LHC injection tests performed in August and early September 2008 in preparation for the circulating beam operation provided the first opportunity to measure with beam the mechanical aperture in...

First Experience with the LHC Beam Loss Monitoring System (2009)

Böhlen, T, Dehning, B, Effinger, E, Emery, J, Follin, F, Holzer, E, ...

The LHC beam loss monitoring system (BLM) consists of about 4000 monitors observing losses at all quadrupole magnets and many other likely loss locations. At the first LHC operation in August and...

Energy Deposition Simulations and Measurements in an LHC Collimator and Beam Loss Monitors (2009)

Assmann, R, Böhlen, T, Bracco, C, Dehning, B, Redaelli, S, Weiler, T, ...

The LHC collimators are protected against beam-caused damages by measuring the secondary particle showers with beam loss monitors. Downstream of every collimator an ionisation chamber and a secondary...

Fast and High Accuracy Wire Scanner (2009)

Koujili, M, Dehning, B, Koopman, J, Ramos, D, Sapinski, M, De Freitas, J, ...

Scanning of a high intensity particle beam imposes challenging requirements on a Wire Scanner system. It is expected to reach a scanning speed of 20 m.s-1 with a position accuracy of the order of 1...

Configuration and Validation of the LHC Beam Loss Monitoring System (2009)

Zamantzas, C, Dehning, B, Emery, J, Fitzek, J, Follin, F, Jackson, S, ...

The LHC Beam Loss Monitoring (BLM) system is one of the most complex instrumentation systems deployed in the LHC. As well as protecting the machine, the system is also used as a means of diagnosing...

Design Specifications for a Radiation Tolerant Beam Loss Measurement ASIC (2009)

Venturini, G G, Dehning, B, Effinger, E, Zamantzas, C

A novel radiation-hardened current digitizer ASIC is in planning stage, aimed at the acquisition of the current signals from the ionization chambers employed in the Beam Loss Monitoring system at...

Systematic Study of Acquisition Electronics with a High Dynamic Range for a Beam Loss Measurement System (2009)

Venturini, G G, Dehning, B, Effinger, E, Emery, J, Zamantzas, C

A discrete components design for a current digitizer based on the current-to-frequency converter (CFC) principle is currently under development at CERN. The design targets at higher current inputs...

LHC BLM Single Channel Connectivity Test using the Standard Installation (2009)

Emery, J, Dehning, B, Effinger, E, Ferioli, G, Zamantzas, C, Ikeda, H, ...

For the LHC Beam Loss Measurement system (BLM), the high voltage supply of the ionisation chambers and the secondary emission detectors is used to test their connectivity. A harmonic modulation of...

Carbon Fiber Damage in Accelerator Beam (2009)

Sapinski, M, Dehning, B, Guerrero, A, Koopman, J, Métral, E

Carbon fibers are commonly used as moving targets in Beam Wire Scanners. Because of their thermomechanical properties they are very resistant to particle beams. Their strength deteriorates with time...

Effects of Tidal Forces on the Beam Energy in LEP (2008)

L. Amaudon, F. Bordry, W. Coosemans, B. Dehning, K. Henrichsen, A. Hofmann, ...

© 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for...

Beam Loss Patterns at the LHC Collimators: Measurements & Simulations (2008)

Böhlen, Till Tobias, Dehning, B

The Beam Loss Monitoring (BLM) system of the Large Hadron Collider (LHC) detects particle losses of circulating beams and initiates an emergency extraction of the beam in case that the BLM thresholds...

Generation of 1.5 Million Beam Loss Threshold Values (2008)

Holzer, E B, Bocian, D, Böhlen, T T, Dehning, B, Kramer, Daniel, Ponce, L, ...

CERN's Large Hadron Collider will store an unprecedented amount of energy in its circulating beams. Beamloss monitoring (BLM) is, therefore, critical for machine protection. It must protect against...

Development, Production and Testing of 4500 Beam Loss Monitors (2008)

Holzer, E B, Chiggiato, P, Dehning, B, Ferioli, G, Grishin, V, Jimenez, T M, ...

Beam-loss monitoring (BLM) [1] is a key element in the LHC machine protection. 4250 nitrogen filled ionization chambers (IC) and 350 secondary emission monitors (SEM) have been manufactured and...

Modelling of Quench Limit for Steady State Heat Deposits in LHC Magnets (2008)

Bocian, D, Dehning, B, Siemko, A

A quench, the transition of a conductor from the superconducting to the normal conducting state, occurs irreversibly in the accelerator magnets if one of the three parameters: temperature, magnetic...

A newly observed effect affects the LEP beam energy (2008)

Brun Dehning Galbraith, G. Brun, B. Dehning, P. Galbraith, K. Henrichsen, M. Koratzinos, ...

The LEP magnetic bending field and therefore the beam energy is changed by a current flow over the vacuum chamber. The current is created by trains travelling between the Geneva main station and...

LHC Machine Protection (2007)

Schmidt, R, Assmann, Ralph Wolfgang, Carlier, E, Dehning, B, Denz, R, Goddard, B, ...

For nominal beam parameters at 7 TeV/c each of the two LHC proton beams has a stored energy of 362 MJ threatening to damage accelerator equipment in case of uncontrolled beam loss. The energy stored...

High efficiency multi-pass proton beam extraction with a bent crystal at the SPS (2007)

Altuna Bussa Carboni, X. Altuna, M. P. Bussa, G. Carboni, B. Dehning, K. Elsener, ...

Recent measurements of 120 GeV proton extraction by means of a bent silicon crystal at the CERNSPS accelerator are summarized. The existence of multi-pass extraction has been proven by blocking...

Experiments On Beam-Beam Depolarization At Lep (2007)

Assmann Blondel Dehning, R. Assmann, A. Blondel, B. Dehning, A. Drees, P. Grosse-wiesmann, ...

The possibility of obtaining transverse polarization with colliding beams was studied at LEP during 1994. A level of transverse beam polarization of 40% was achieved with e # e # collisions in one of...

Experimental Evidence For Multi-Pass Extraction With A Bent Crystal (2007)

Dehning Elsener Fidecaro, Bent Crystal, B. Dehning, K. Elsener, G. Fidecaro, M. Gyr, ...

The feasibility of extracting particles from the halo of a circulating proton beam using a bent silicon crystal has been demonstrated experimentally at the SPS for a beam energy of 120 GeV. Presently...

Improvements in polarization (2007)

M. Böge, E. Bravin, B. Dehning, M. Hildreth, G. Mugnai, J. Wenninger, ...

The main aim of energy calibrations in 1997 was to determine the beam energy at 55 GeV. Several different preparations were launched to allow a build up of polarization at high engeries for the...

LHC Beam Loss Detector Design: Simulations and Measurements (2007)

Dehning, B, Effinger, E, Emery, J, Ferioli, G, Holzer, E B, Kramer, Daniel, ...

The Beam Loss Monitoring (BLM) system is integrated in the active equipment protection system of the LHC. It determines the number of particles lost from the primary hadron beam by measuring the...

The LHC Beam Loss Measurement System (2007)

Dehning, B, Effinger, E, Emery, J, Ferioli, G, Guaglio, G, Holzer, E B, ...

An unprecedented amount of energy will be stored in the circulating beams of LHC. The loss of even a very small fraction of a beam may induce a quench in the superconducting magnets or cause physical...

Functional and Linearity test system for the LHC Beam Loss Monitoring data acquisition card (2007)

Emery, Jonathan, Dehning, B, Effinger, E, Leitner, R, Zamantzas, C

In the frame of the design and development of the beam loss monitoring (BLM) system for the Large Hadron Collider (LHC) a flexible test system has been developed to qualify and verify during design...

Beam Loss Response Measurements with a LHC Prototype Collimator in the SPS (2007)

Weiler, Th, Arduini, Gianluigi, Assmann, Ralph Wolfgang, Bracco, C, Braun, H, Dehning, B, ...

Beam tests with a Large Hadron Collider (LHC) prototype collimator were performed at the Super Proton Synchrotron (SPS) in autumn 2006. Applying a new collimator control system many new beam...

Classification of the LHC BLM Ionization Chamber (2007)

Stockner, M, Dehning, B, Fabjan, Christian Wolfgang, Holzer, E B, Kramer, Daniel

The LHC beam loss monitoring (BLM) system must prevent the super conducting magnets from quenching and protect the machine components from damage. The main monitor type is an ionization chamber....

Secondary Electron Emission Beam Loss Monitor for LHC (2007)

Dehning, B, Ferioli, G, Holzer, EB, Kramer, Daniel

Beam Loss Monitoring (BLM) system is a vital part of the active protection of the LHC accelerators' elements. It should provide the number of particles lost from the primary hadron beam by measuring...

Single Gain Radiation Tolerant LHC Beam Loss Acquisition Card (2007)

Effinger, E, Dehning, B, Emery, J, Ferioli, G, Zamantzas, C

The beam loss monitoring system is one of the most critical elements for the protection of the LHC. It must prevent the super conducting magnets from quenches and the machine components from damages,...

Wire Scanner Motion Control Card (2007)

Forde, S E, Dehning, B

Scientists require a certain beam quality produced by the accelerator rings at CERN. The discovery potential of LHC is given by the reachable luminosity at its interaction points. The luminosity is...

An FPGA Based Implementation for Real-Time Processing of the LHC Beam Loss Monitoring System's Data (2007)

Dehning, B, Effinger, E, Emery, J, Ferioli, G, Zamantzas, C

The strategy for machine protection and quench prevention of the Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) is mainly based on the Beam Loss Monitoring (BLM)...

The LHC Beam Loss Monitoring System's Surface Building Installation (2007)

Dehning, B, Effinger, E, Emery, J, Ferioli, G, Zamantzas, C

The strategy for machine protection and quench prevention of the Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) is mainly based on the Beam Loss Monitoring (BLM)...

Measurements and Simulations of Ionization Chamber Signals in Mixed Radiation Fields for the LHC BLM System (2006)

Dehning, B, Fabjan, Christian Wolfgang, Ferioli, G, Holzer, EB, Stockner, M

The LHC beam loss monitoring (BLM) system must prevent the super conducting magnets from quenching and protect the machine components from damage. The main monitor type is an ionization chamber....

The Real-Time Data Analysis and Decision System for Particle Flux Detection in the LHC Accelerator at CERN. (2006)

Zamantzas, C, Dehning, B, Da Vià, C

The superconducting Large Hadron Collider (LHC) under construction at the European Organisation for Nuclear Research (CERN) is an accelerator unprecedented in terms of beam energy, particle...

The final collimation system for the LHC (2006)

Assmann, R W, Aberle, O, Bellodi, G, Bertarelli, A, Bracco, C, Braun, H, ...

The LHC collimation system has been re-designed over in order to address the unprecedented challenges that are faced with the 360 MJ beams at 7 TeV. The layout of the LHC has now been frozen and a...

Reliability of the Beam Loss Monitors System for the Large Hadron Collider at CERN (2006)

Guaglio, G, Santoni, C, Dehning, B

The energy stored in the Large Hadron Collider is unprecedented. The impact of the beam particles can cause severe damage on the superconductive magnets, resulting in significant downtime for...

Reliability of the Beam Loss Monitors System for the Large Hadron Collider at CERN (2006)

Guaglio, G, Santoni, C, Dehning, B

The energy stored in the Large Hadron Collider is unprecedented. The impact of the beam particles can cause severe damage on the superconductive magnets, resulting in significant downtime for...

Beam Loss Monitoring System for the LHC (2006)

Holzer, E B, Dehning, B, Effinger, E, Emery, J, Ferioli, G, González, J L, ...

One of the most critical elements for the protection of CERN's Large Hadron Collider (LHC) is its beam loss monitoring (BLM) system. It must prevent the superconducting magnets from quenching and...

Simulation of an electron source based calibrating system for an ionisation profile monitor (2005)

Dehning, B, Koopman, J, Refsum, H H

Measurements have shown that the gain of the imaging system of the Ionisation Profile Monitor (IPM) changes over time, in a non-homogenous way. This ageing effect is caused by changes in the Micro...

Beam loss monitor system for machine protection (2005)

Dehning, B

Most beam loss monitoring systems are based on the detection of secondary shower particles which depose their energy in the accelerator equipment and finally also in the monitoring detector. To allow...

Optical design for BIPM imaging system (2005)

Dehning, B, Fischer, C, Hutchins, S, Koopman, J, Kramer, Daniel

The light imaging system for the Beam Ionization Profile Monitor (BIPM) was designed to allow simultaneous operation of a fast Multi Anode Photo Multiplier and two new types of intensified standard...

Accuracy of the SPS transverse emittance monitors (2005)

Dehning, B, Fischer, C, Koopman, J, Roncarolo, F

A campaign of studies and measurements has been carried out with the aim of establishing the SPS transverse profile monitors resolution, reproducibility and accuracy. The studies regarded systematic...

The LHC beam loss monitoring system's real-time data analysis card (2005)

Dehning, B, Effinger, E, Ferioli, G, Guaglio, G, Leitner, R, Zamantzas, C

The BLM (Beam Loss Monitoring) system has to prevent the superconducting magnets from being quenched and protect the machine components against damages making it one of the most critical elements for...

Reliability Considerations on the LHC Beam Loss Monitors System (2005)

Guaglio, G., Dehning, B., Santoni, C.

The increase of beam energy and beam intensity, together with the use of super conducting magnets, opens new failure scenarios and brings new criticalities for the whole accelerator protection...

Reliability Considerations on the LHC Beam Loss Monitors System (2005)

Guaglio, G., Dehning, B., Santoni, C.

The increase of beam energy and beam intensity, together with the use of super conducting magnets, opens new failure scenarios and brings new criticalities for the whole accelerator protection...

Reliability Considerations on the LHC Beam Loss Monitors System (2005)

Guaglio, G., Dehning, B., Santoni, C.

The increase of beam energy and beam intensity, together with the use of super conducting magnets, opens new failure scenarios and brings new criticalities for the whole accelerator protection...

Reliability of Beam Loss Monitors System for the Large Hadron Collider (2004)

Guaglio, G., Dehning, B., Santoni, C.

The employment of superconducting magnets, in the high energies colliders, opens challenging failure scenarios and brings new criticalities for the whole system protection. For the LHC beam loss...

Reliability of Beam Loss Monitors System for the Large Hadron Collider (2004)

Guaglio, G., Dehning, B., Santoni, C.

The employment of superconducting magnets, in the high energies colliders, opens challenging failure scenarios and brings new criticalities for the whole system protection. For the LHC beam loss...

Reliability of Beam Loss Monitors System for the Large Hadron Collider (2004)

Guaglio, G., Dehning, B., Santoni, C.

The employment of superconducting magnets, in the high energies colliders, opens challenging failure scenarios and brings new criticalities for the whole system protection. For the LHC beam loss...

European Organization For Nuclear Research (1998)

European Laboratory For, E. Bravin, B. Dehning, A. Drees, G. Mugnai

The determination of the Z mass at LEP requires a knowledge of the relative beam energy in the order of 10 ppm, therefore it is essential to understand the dipole field variations to the same level...

Experimental Evidence for Multi-Pass Extraction With a Bent Crystal (1995)

B. Dehning, K. Elsener, G. Fidecaro, M. Gyr, W. Herr, J. Klem, ...

The feasibility of extracting particles from the halo of a circulating proton beam using a bent silicon crystal has been demonstrated experimentally at the SPS for a beam energy of 120 GeV. Presently...

High efficiency multi-pass proton beam extraction with a bent crystal at the SPS (1995)

X. Altuna, M.P. Bussa, G. Carboni, B. Dehning, K. Elsener, A. Ferrari, ...

Recent measurements of 120 GeV proton extraction by means of a bent silicon crystal at the CERNSPS accelerator are summarized. The existence of multi-pass extraction has been proven by blocking...