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...
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...
EXTRACTION OF 22 TeV/c LEAD IONS FROM THE CERN SPS USING A BENT SILICON CRYSTAL (2007)
Arduini Cornelis Elsener, G. Arduini, K. Cornelis, K. Elsener, G. Ferioli, G. Fidecaro, ...
The extraction of protons from the halo of a circulating beam has been repeatedly demonstrated at the SPS. In a recent experiment a coasting lead ion beam was available at a momentum of 270 GeV/c per...
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...
Effective spill times, RF and LQE servo (2007)
Actis, P, Burnod, L, D'Amico, E, Ferioli, G, Mann, J, De Vries, J
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,...
Premieres mesures de profil utilisant la lumiere synchrotron (2007)
Bossart, Rudolf, Bosser, Jacques, Burnod, L, Camas, J, Cuenot, R, D'Amico, T E, ...
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)...
A transverse beam profile monitor for -p$\overline{p}$ studies (2007)
Barisy, A, Bellone, R, Blanchard, R, Camas, J, Evans, L, Ferioli, G, ...
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....
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...
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...
A new TV beam observation system for CERN (2005)
Bravin, E, Burger, S, Ferioli, G, Focker, G J, Guerrero, A, MacCaferri, R
Beam observation, emittance measurements and initial beam steering, are often achieved using scintillating or OTR (optical transition radiation) screens. In the CERN accelerators complex, this system...
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...
Design of the Beam Loss Monitoring System for the LHC Ring (2004)
Holzer, E B, Dehning, Bernd, Effinger, E, Ferioli, G, González, J L, Gschwendtner, E, ...
The beam loss monitoring (BLM) system of the LHC 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...
Accuracy of Profile Monitors and LHC Emittance Measurements (2004)
Arduini, Gianluigi, Dehning, Bernd, Ferioli, G, Koopman, J, Kramer, Daniel, Roncarolo, F
The monitoring and controlling of the beam transverse emittance is essential to allow high luminosity performances in a collider operation. The profile monitors in the LHC injection chain are...
Beam Studies Made with the SPS Ionization Profile Monitor (2003)
Ferioli, G, Fischer, C, Koopman, J, Roncarolo, F
During the last two years of SPS operation, investigations were pursued on the ability of the SPS ionization profile monitor prototype to fulfill different tasks. It is now established that the...
Ionization Chambers for the LHC Beam Loss Detection (2003)
Assmann, R W, Dehning, Bernd, Ferioli, G, Gschwendtner, E, Kain, V
At the Large Hadron Collider (LHC) a beam loss system will be used to prevent and protect superconducting magnets against coil quenches and coil damages. Ionisation chambers will be mounted outside...
Electron Cloud Studies and Beam Scrubbing Effect in the SPS (2003)
Jim Nez, J M, Arduini, Gianluigi, Collier, Paul, Ferioli, G, Henrist, Bernard, Hilleret, Noël, ...
The performance of the SPS as LHC injector has been limited, with LHC-type beams, by the electron cloud multipacting for high bunch intensities (>6.0x10**10 protons/bunch). To study in detail the...
Electron cloud with LHC-type beams in the SPS: A review of three years of measurements (2003)
Jiménez, J M, Arduini, Gianluigi, Collier, Paul, Ferioli, G, Henrist, Bernard, Hilleret, Noël, ...
In August 1999, high bunch intensities LHC-type beams were injected for the first time in the SPS inducing strong vacuum pressure rises, perturbations on the electrostatic pick-ups and beam...
Arduini, Gianluigi, Collier, Paul, Dehning, Bernd, Ferioli, G, Henrist, Bernard, Jensen, L, ...
Electron cloud effects presently limit the performances of the CERN SPS with LHC type beams [1] and are of concern for the LHC itself [2]. Electron multipacting in the SPS produces dramatic dynamic...
The Beam Loss Detection System of the LHC Ring (2002)
Gschwendtner, E, Kain, V, Friesenbichler, W, Ferioli, G, Dehning, Bernd
At the Large Hadron Collider (LHC) a beam loss system will be installed in the arc, dispersion suppressor and the straight regions for a continuous surveillance of particle losses. These beam...
The Beam Loss Detection System of the LHC Ring (2002)
Gschwendtner, E, Dehning, Bernd, Ferioli, G, Friesenbichler, W, Kain, V
At the Large Hadron Collider (LHC) a beam loss system will be installed in the arc, dispersion suppressor and the straight regions for a continuous surveillance of particle losses. These beam...
Sensitivity Studies with the SPS Rest Gas Profile Monitor (2001)
Ferioli, G, Fischer, C, Koopman, J, Sillanoli, M
During the SPS run in the year 2000 further test measurements were performed with the rest gas monitor. First, profiles of single circulating proton bunches were measured and the bunch charge...
Arauzo-Garcia, A, Dehning, Bernd, Ferioli, G, Gschwendtner, E
At the Large Hadron Collider (LHC) a beam loss system will be installed for a continuous surveillance of particle losses. These beam particles deposit their energy in the super-conducting coils...
Sps Energy Deposition, G. Ferioli, B. Goddard, P. Knaus, J. Koopman
Introduction The effect of total beam loss in the SPS electrostatic septum (ZS), as could occur during fast extraction for LHC, has been studied by simulation [2]. The energy deposition by impact of...
Transverse Instabilities of the LHC Proton Beam in the SPS (2000)
Arduini, Gianluigi, Cornelis, Karel, Ferioli, G, Jensen, L, Zimmermann, Frank
The availability from the injectors of the proton beam required for the LHC era has allowed studying its transverse behaviour in the SPS. Profile and beam oscillation measurements evidenced the...
The OTR screen betatron matching monitor of the CERN SPS (2000)
Camas, J, Colchester, R J, Ferioli, G, Gras, J J, Jung, R, Vouillot, J M
The Luminescence Profile Monitor of the CERN SPS (2000)
Burtin, G, Camas, J, Ferioli, G, Jung, R, Koopman, J, Perret, R, ...
The SPS luminescence monitor is the first device of this type to be used in a high energy accelerator, from 14 to 450 GeV, where up till now the light production was considered to be insufficient. It...
Protection and Diagnostic Systems for High Intensity Beams (2000)
Jensen, L, Ferioli, G, Vismara, Giuseppe
This paper presents a summary of the facilities for beam interlocks and diagnostics to protect the CERN SPS machine. An overview of the existing systems is given, which are based on beam loss and...
The Luminescence Profile Monitor of the CERN SPS (2000)
Burtin, G, Camas, J, Ferioli, G, Jung, R, Koopman, J, Perret, R, ...
The SPS luminescence monitor is the first device of this type to be used in a high energy accelerator, from 14 to 450 GeV, where up till now the light production was considered to be insufficient. It...
Beam profile measurements at 40 MHz in the PS to SPS transfer channel (1999)
Ferioli, G, Gras, J J, Hiller, H, Jung, R
Bunch to bunch beam profile measurements provide a valuable tool to control the injection lines to the SPS. A fast profile monitor based on a 2.5 µm Mylar coated with Aluminium Optical Transition...
Adaptive optics for the LEP 2 synchrotron light monitors (1999)
Burtin, G, Colchester, R J, Ferioli, G, Gras, J J, Jung, R, Vouillot, J M
The image obtained with the LEP synchrotron radiation telescopes deteriorates, giving multiple and deformed images, when the beam energy goes beyond 80 GeV at beam currents above 2 mA. This problem...
The OTR screen betatron matching monitor of the CERN SPS (1999)
Bovet, Claude, Colchester, R J, Ferioli, G, Gras, J J, Jung, R, Vouillot, J M
In order to satisfy the stringent emittance requirements of LHC, betatron matching monitors, based on multiturn beam profile measurements, have been proposed for the SPS and LHC. A test monitor has...
Preliminary test of a luminescence profile monitor in the CERN SPS (1999)
Camas, J, Colchester, R J, Ferioli, G, Jung, R, Koopman, J
In order to satisfy the tight emittance requirements of LHC, a non-intercepting beam profile monitor is needed in the SPS to follow the beam emittance evolution during the acceleration cycle from 26...
Comparative test results of various beam loss monitors in preparation for LHC (1999)
Beam loss detectors will play an important role in the protection of the superconducting LHC magnets. Different types of detectors have been tested in the SPS ring and secondary beam lines with a...
First Results from Betatron Matching Monitors Installed in the CERN PSB and SPS (1998)
Bovet, Claude, Colchester, R J, Dutriat, C, Ferioli, G, Gras, J J, Jung, R, ...
In order to satisfy the tight emittance requirements of LHC, betatron matching monitors, based on multiturn beam profile measurements, have been proposed and installed in the CERN SPS and PSB. The...
A Collimation Experiment with Protons at 120 GeV (1998)
Catalan-Lasheras, N, Ferioli, G, Jeanneret, J B
We present the preliminary results of a two-stage collimation experiment made with a 120 GeV coasting proton beam in the SPS at CERN.
A Collimation Experiment with Protons at 120 GeV (1998)
Catalan-Lasheras, N, Ferioli, G, Jeanneret, J B
We present the preliminary results of a two-stage collimation experiment made with a 120 GeV coasting proton beam in the SPS at CERN.
About 180 Secondary Emission Monitors (SEM) are used in the transfer lines to and from the CERN SPS for the measurement of profile, position and intensity of injected and ejected beams. Important...
The Different Uses of a Data Acquisition System for Beam Instrumentation in the SPS Complex (1998)
A single data acquisition system able to sample and store every 100 ns analog signals coming from different monitors (i.e. SEM or PhotoMultipliers) has been used in the SPS complex for three...
Proton Collimation in TeV Colliders (1997)
Catalan-Lasheras, N, Ferioli, G, Jeanneret, J B, Jung, R, Kaltchev, D I, Trenkler, T
In high intensity proton colliders with superconducting magnets, quenches induced by beam losses are unavoidable in the absence of a collimation system. We will show that a single stage system cannot...
Proton Collimation in TeV Colliders (1997)
Catalan-Lasheras, N, Ferioli, G, Jeanneret, J B, Jung, R, Kaltchev, D I, Trenkler, T
In high intensity proton colliders with superconducting magnets, quenches induced by beam losses are unavoidable in the absence of a collimation system. We will show that a single stage system cannot...
Deflection and extraction of Pb ions up to 33 TeV/c by a bent silicon crystal (1997)
Biino, C, Clement, M, Doble, N, Elsener, K, ...
The first results from an experiment to deflect a beam of fully stripped, ultrarelativistic pb(82+) ions of 400 GeV/c per unit of charge, equivalent to 33 TeV/c, by means of a bent crystal are...
Deflection and extraction of Pb ions up to 33 TeV/c by a bent silicon crystal (1997)
Arduini, Gianluigi, Biino, C, Clément, M, Cornelis, Karel, Doble, Niels T, Elsener, K, ...
The first results from an experiment to deflect a beam of fully stripped, ulta-relativistic Pb ions of 400 GeV/c per unit of charge, equivalent to 33 TeV/c, by means of a bent crystal are reported....
Extraction of 22 TeV/c lead ions from the CERN SPS using a bent silicon crystal (1997)
Arduini, Gianluigi, Cornelis, Karel, Elsener, K, Ferioli, G, Fidecaro, Giuseppe, Gyr, Marcel, ...
The extraction of protons from the halo of a circulating beam has been repeatedly demonstrated at the SPS. In a recent experiment a coasting lead ion beam was available at a momentum of 270 GeV/c per...
Lead ion beam emittance and transmission studies in the PS-SPS complex at CERN (1996)
Arduini, Gianluigi, Bailey, R, Bohl, T, Burkhardt, H, Cappi, R, Carter, C, ...
In the Lead Ion Facility at CERN [1] Pb53+ ion beams are accelerated up to a kinetic energy of 4.2 GeV/u in the CERN PS, extracted and stripped to Pb82+ in the transfer line from PS to SPS where they...
Lead Ion Beam Emittance And Transmission Studies In The Ps-Sps Complex At Cern (1996)
Arduini Bailey Bohl, G. Arduini, R. Bailey, T. Bohl, H. Burkhardt, C. Carter, ...
In the Lead Ion Facility at CERN [1] Pb 53+ ion beams are accelerated up to a kinetic energy of 4.2 GeV/u in the CERN PS, extracted and stripped to Pb 82+ in the transfer line from PS to SPS where...
Control and monitoring of the SPS proton and ion extractions (1995)
Buur, G, Ferioli, G, Gras, J J, Jung, R
For the fixed target program of the SPS, protons and ions are accelerated and extracted towards seven target stations in the NORTH and WEST experimental areas. These extractions range from 106 Lead...
Screens versus SEM grids for single pass measurements in SPS, LEP and LHC (1995)
Camas, J, Ferioli, G, Gras, J J, Jung, R
When the transfer channels of the SPS and LEP were designed in the 70¹s and early 80¹s, it was foreseen to use screens to observe qualitatively the beam positions and shapes and Secondary Emission...
Camas, J, Crockford, G, Ferioli, G, Fischer, C, Gras, J J, Jung, R, ...
Bouchet, B, Bovet, Claude, Burns, A, Camas, J, Ferioli, G, Fischer, C, ...
The micron wire scanner at the SPS (SPS-87-13-ABM) (1990)
Bosser, Jacques, Camas, J, Evans, Lyndon R, Ferioli, G, Mann, J, Olsen, Ø, ...
Single bunch profile measurement using synchrotron light from an undulator (1990)
Bosser, Jacques, Burnod, L, Coisson, R, D'Amico, T E, Ferioli, G, Mann, J, ...
Time dependent structure and spill measurements of proton beams at the CERN SPS (1990)
Bosser, Jacques, Dieperink, J H, Ferioli, G, Mann, J, Warstki, L
Wire scanner news from the CERN-SPS (1990)
Burns, A, Camas, J, D'Amico, T E, Ferioli, G, King, Q, Kissler, Karl Heinz, ...
Transverse emittance measurement with a rapid wire scanner at the CERN SPS (1990)
Bosser, Jacques, Camas, J, Evans, Lyndon R, Ferioli, G, Hopkins, R, Mann, J, ...
A transverse beam profile monitor for p-$\overline{p}$ studies in the CERN SPS (1990)
Barisy, A, Bellone, R, Blanchard, R R, Camas, J, Evans, Lyndon R, Ferioli, G, ...
Characteristics of the radiation emitted by protons and antiprotons in an undulator (1990)
Bosser, Jacques, Burnod, L, Coisson, R, Ferioli, G, Mann, J, Méot, F
Proton beam profile measurements with synchrotron light (1990)
Bossart, Rudolf, Bosser, Jacques, Burnod, L, D'Amico, T E, Ferioli, G, Mann, J, ...
Characteristics of the radiation emitted by protons and antiprotons in an undulator (1984)
Bosser, J., Burnod, L., Coïsson, R., Ferioli, G., Mann, J., Méot, F.
Spectral and angular distribution of visible radiation emitted by a high energy proton beam in an undulator have been measured for the first time. The same device has also allowed the direct visual...
Characteristics of the radiation emitted by protons and antiprotons in an undulator (1984)
Bosser, J., Burnod, L., Coïsson, R., Ferioli, G., Mann, J., Méot, F.
Spectral and angular distribution of visible radiation emitted by a high energy proton beam in an undulator have been measured for the first time. The same device has also allowed the direct visual...
Characteristics of the radiation emitted by protons and antiprotons in an undulator (1984)
Bosser, J., Burnod, L., Coïsson, R., Ferioli, G., Mann, J., Méot, F.
Spectral and angular distribution of visible radiation emitted by a high energy proton beam in an undulator have been measured for the first time. The same device has also allowed the direct visual...