Fabio Sauli

Study of relevant parameters of GEM-based detectors (2008)

Croci, Gabriele, Ropelewski, Leszek, Sauli, Fabio, Ragazzi, S

The Gas Electron Multiplier consist of a thin Kapton insulating (50 $\mu$m) foil copper-clad on both sides and perforated by a high density, regular matrix of holes (around 100 per square...

The COMPASS Experiment at CERN (2007)

Abbon, P, Albrecht, E, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Alekseev, M G, ...

The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing...

Ion feedback suppression in Time Projection Chambers (2006)

Sauli, Fabio, Everaerts, P, Ropelewski, Leszek

A controlled-voltage Gas Electron Multiplier (GEM) can be used to block the re-injection of positive ions in large volume Time Projection Chambers. With proper choice of geometry, gas filling and...

Ion feedback suppression in Time Projection Chambers (2006)

Sauli, Fabio, Ropelewski, Leszek, Everaerts, P

A controlled-voltage Gas Electron Multiplier (GEM) can be used to block the re-injection of positive ions in large volume Time Projection Chambers. With proper choice of geometry, gas filling and...

Light multi-GEM detector for high-resolution tracking systems (2005)

Bondar, A, Buzulutskov, A F, Oliveira, R, Ropelewski, Leszek, Sauli, Fabio, Shekhtman, L I

Controlled etching of copper electrodes in Gas Electron Multiplier foils allows a reduction of the material budget by more than a factor of two for a triple-GEM detector. Detectors making use of...

GEM - A novel gaseous particle detector (2005)

Meinschad, T, Sauli, Fabio

The work carried out within the framework of this Ph.D. deals with the construction of gaseous prototype detectors using Gas Electron Multiplier electrodes for the amplification of charges released...

GEM - A novel gaseous particle detector (2005)

Meinschad, T, Sauli, Fabio

The work carried out within the framework of this Ph.D. deals with the construction of gaseous prototype detectors using Gas Electron Multiplier electrodes for the amplification of charges released...

From Bubble Chambers to Electronic Systems: 25 Years of Evolution in Particle Detectors at CERN (1979-2004) (2004)

Sauli, Fabio

The European Organization for Nuclear Research (CERN) celebrates in October 2004 its 50th anniversary. A centre of excellence for elementary particle physics research, the laboratory has contributed...

GEM-based photon detector for rich applications (2004)

Meinschad, T, Ropelewski, Leszek, Sauli, Fabio

We describe the performance of a photon detector based on the Gas Electron Multiplier (GEM). With a CsI photocathode deposited on the first GEM in a cascade, the device permits to efficiently detect...

GEM-based photon detector for rich applications (2004)

Meinschad, T, Ropelewski, Leszek, Sauli, Fabio

We describe the performance of a photon detector based on the Gas Electron Multiplier (GEM). With a CsI photocathode deposited on the first GEM in a cascade, the device permits to efficiently detect...

Special Focus Workshops (2004)

Alberto Del Guerra, Fabio Sauli, Sibylle Ziegler

Gamma-Ray Detectors will be held for the first time in Italy, in the prestigious city of Rome, on October 16-22, 2004. The venue of the conference is the Ergife Palace Hotel, one of the largest...

Construction, test and commissioning of the triple-GEM tracking detector for COMPASS (2002)

Altunbas, M C, Capéans-Garrido, M, Dehmelt, K, Ehlers, J, Konorov, I, Gandi, A, ...

The Small Area Tracking system of the COMPASS experiment at CERN includes a set of 20 large area, fast position-sensitive Gas Electron Multiplier (GEM) detectors, designed to reliably operate in the...

Triple GEM tracking detectors for COMPASS (2002)

Ketzer, B, Altunbas, M C, Dehmelt, K, Ehlers, J, Friedrich, J M, Grube, B, ...

The small area tracker of COMPASS, a high-luminosity fixed target experiment at CERN's SPS, includes a set of 20 large-size ($31\times 31\,\cm^2$) Gas Electron Multiplier (GEM) detectors. Based on...

Aging measurements with the gas electron multiplier (GEM) (2001)

Altunbas, M C, Dehmelt, K, Kappler, S, Ketzer, B, Ropelewski, Leszek, Sauli, Fabio, ...

Continuing previous aging measurements with detectors based on the Gas Electron Multiplier (GEM), a $31\times 31$cm$^2$ triple-GEM detector, as used in the small area tracking of the COMPASS...

Discharge studies and prevention in the gas electron multiplier (GEM) (2001)

Bachmann, S, Bressan, A, Capéans-Garrido, M, Deutel, M, Kappler, S, Ketzer, B, ...

The gas electron multiplier (GEM) used as single proportional counter or in a cascade of two or more elements, permits to attain high gains and to perform detection and localization of ionizing...

Development and applications of the Gas Electron Multiplier (2000)

Bachmann, S, Bressan, A, Kappler, S, Ketzer, B, Deutel, M, Ropelewski, Leszek, ...

The Gas Electron Multiplier (GEM) has been recently developed to cope with the severe requirements of high luminosity particle physics experimentation. With excellent position accuracy and very high...

Performance of GEM detectors in high intensity particle beams (2000)

Bachmann, S, Bressan, A, Ketzer, B, Deutel, M, Ropelewski, Leszek, Sauli, Fabio, ...

We describe extensive tests of Double GEM and Triple GEM detectors, including full size prototypes for the COMPASS experiment, exposed to high intensity muon, proton and pion beams at the...

Gas detectors: Achievements and trends (2000)

Sauli, Fabio

We describe recent developments of two areas of research on gaseous detectors: resistive plate chambers, aiming at best time resolution, and micropattern chambers, designed for high rate tracking in...

Optimisation of the Gas Electron Multiplier for high rate application (2000)

Bachmann, S, Bressan, A, Ketzer, B, Deutel, M, Ropelewski, Leszek, Sauli, Fabio, ...

The construction and performance of large size GEM~detectors for the COMPASS~experiment is described. Based on the experience gained during the operation of these detectors in high rate muon, proton,...

Micro-pattern gaseous detectors (2000)

Sauli, Fabio, Sharma, A

Micro-strip gas chambers, with their excellent localization properties, high rate capability and good granularity, have been adopted by many experiments in particle physics. Two recurrent problems...

GEM: the gas electron multiplier (2000)

Sauli, Fabio

We describe the basic structure and operation of a new device, the Gas Electron Multiplier. Consisting in a polymer foil, metal-clad on both sides and perforated by a high density of holes, the GEM...

International Symposium on Hadrontherapy (2000)

Sauli, Fabio, Bachy, Gérard

1)Recent developments in radiation detectors. 2)Advances in large and precise mechanical structures.

Micro-pattern gas detectors (1999)

Sauli, Fabio

Micro-strip gas chambers, with their excellent localization properties, high rate capability and good granularity, have been adopted by many experiments in particle physics. Two recurrent problems...

Optimization of operation and test of large size GEM detectors (1999)

Bachmann, S, Bressan, A, Placci, Alfredo, Ropelewski, Leszek, Sauli, Fabio

We describe basic development work aimed at the realization of large (~1000 cm2 active) detectors for the COMPASS experiment, based on the gas electron multiplier technology. Essentially a high-rate...

Charge amplification and transfer processes in the gas electron multiplier (1999)

Bachmann, S, Bressan, A, Ropelewski, Leszek, Sauli, Fabio, Sharma, A, Mörmann, D

We report the results of systematic investigations on the operating properties of detectors based on the gas electron multiplier (GEM). The dependence of gain and charge collection efficiency on the...

Charge amplification and transfer processes in the gas electron multiplier (1999)

Bachmann, S, Bressan, A, Ropelewski, Leszek, Sauli, Fabio, Sharma, A, Mörmann, D

We report the results of systematic investigations on the operating properties of detectors based on the gas electron multiplier (GEM). The dependence of gain and charge collection efficiency on the...

Beam tests of the gas electron multiplier (1998)

Bressan, A, Labbé, J C, Pagano, P, Ropelewski, Leszek, Sauli, Fabio

We describe the results of systematic measurements, carried out with single and double GEM detectors with printed circuit read-out and having an active area 10x10 cm , both in the laboratory and in a...

Two-dimensional readout of GEM detectors (1998)

Bressan, A, De Oliveira, R, Gandi, A, Labbé, J C, Ropelewski, Leszek, Sauli, Fabio, ...

The recently introduced Gas Electron Multiplier (GEM) permits the amplification of electrons released by ionizing radiation in a gas by factors approaching ten thousand, larger gains can be obtained...

High rate behavior and discharge limits in micro-pattern detectors (1998)

Bressan, A, Hoch, M, Pagano, P, Ropelewski, Leszek, Sauli, Fabio, Biagi, S F, ...

We present and discuss a set of systematic measurements, carried out with gaseous proportional micro-pattern detectors, in order to assess their maximum gain when irradiated with high-rate soft...

Gas detectors: recent developments and future perspectives (1998)

Sauli, Fabio

Thirty years after the invention of the Multi-Wire Proportional Chamber, and twenty from the first Vienna Wire Chamber Conference, the interest and research efforts devoted to gas detectors are still...

Further developments of the gas electron multiplier (GEM) (1998)

Benlloch, J M, Bressan, A, Capéans-Garrido, M, Gruwé, M, Hoch, M, Labbé, J C, ...

We describe the development and operation of the Gas Electron Multiplier, a thin insulating foil metal-clad on both sides and perforated by a regular pattern of small holes. The mesh can be...

Development of the gas electron multiplier (GEM) (1998)

Benlloch, J M, Bressan, A, Büttner, C, Capéans-Garrido, M, Gruwé, M, Hoch, M, ...

We describe recent developments of the Gas Electron Multiplier (GEM), a thin composite mesh acting as proportional avalanche amplifier in gas counters. In beam tests we have verified the excellent...

Construction, test and operation in a high intensity beam of a small system of microstrip gas chambers (1997)

Barr, A J, Bachmann, S, Boimska, B, Bouclier, Roger, Braem, André, Camps, C, ...

We describe the construction, test and installation procedures, and the experience gained with the operation of a small but complete system of high rate Micro-Strip Gas Chambers, made on thin...

Progress with the gas electron multiplier (1997)

Büttner, C, Capéans-Garrido, M, Dominik, Wojciech, Hoch, M, Labbé, J C, Manzin, G, ...

The Gas Electron Multiplier (GEM) amplifies electrons released in a gas and transfers them to a second element of detection, multi-wire or micro-strip chamber. We describe recent developments...

Progress with diamond over-coated microstrip gas chambers (1997)

Boimska, B, Bouclier, Roger, Capéans-Garrido, M, Dominik, Wojciech, Million, Gilbert, Ropelewski, Leszek, ...

We describe recent observations and measurements with Micro-Strip Gas Chambers coated, after manufacturing, with a thin diamond-like layer in order to increase their rate capability. Compared to the...

Operation of microstrip gas chambers manufactured on glass coated with high resistivity diamond-like layers (1997)

Boimska, B, Bouclier, Roger, Dominik, Wojciech, Hoch, M, Million, Gilbert, Ropelewski, Leszek, ...

We describe recent observations and measurements realized with micro-strip gas chambers (MSGCs) manufactured on boro-silicate glass coated with a thin layer of diamond-like carbon (DLC) having a...

The virtual cathode chamber (1997)

Capéans-Garrido, M, Dominik, Wojciech, Hoch, M, Ropelewski, Leszek, Sauli, Fabio, Shekhtman, L I, ...

We describe the operating principle and the first experimental results obtained with gas micro-strip detectors realized with anodes only on the active side, the multiplying field being provided from...

New observations with the gas electron multiplier (GEM) (1997)

Bouclier, Roger, Dominik, Wojciech, Hoch, M, Labbé, J C, Million, Gilbert, Ropelewski, Leszek, ...

We describe recent measurements realized with the Gas Electron Multiplier (GEM) mesh added as pre-amplification element to a multiwire and a micro-strip chamber. Large, stable combined gains are...

"Diamond" over-coated Microstrip Gas Chambers for high rate operation (1997)

Barr, A J, Boimska, B, Bouclier, Roger, Capéans-Garrido, M, Dominik, Wojciech, Hoch, M, ...

We describe the recent developments on the diamond-like carbon (DLC) over-coated Microstrip Gas Chambers made on drawn glass substrates. MSGC surface coating with thin DLC layer of stable and...

Operation of high rate microstrip gas chambers (1997)

Barr, A J, Boimska, B, Bouclier, Roger, Capéans-Garrido, M, Dominik, Wojciech, Manzin, G, ...

We describe recent measurements carried out in well controlled and reproducible conditions to help understanding the factors affecting the short and long term behaviour of Microstrip Gas Chambers....

Study of ageing and gain limits of microstrip gas chambers at high rates (1997)

Boimska, B, Bouclier, Roger, Capéans-Garrido, M, Claes, S, Dominik, Wojciech, Hoch, M, ...

The CMS experiment comprises MSGCs as one of the key detection elements for high luminosity tracking at LHC. In addition to the high dose rate of 10 mC/year per cm of strip, these detectors have to...

Development of high rate MSGCS: overview of results from RD28 (1997)

Sauli, Fabio

Many laboratories world-wide have contributed to the R&D project RD-28 at CERN (development of high rate micro-strip gas chambers). Various aspects of the design and use of the detector have been...

The gas electron multiplier (GEM) (1996)

Bouclier, Roger, Capéans-Garrido, M, Dominik, Wojciech, Hoch, M, Labbé, J C, Million, Gilbert, ...

We describe operating priciples and results obtained with a new detector component: the Gas Electrons Multiplier (GEM). Consisting of a thin composite sheet with two metal layers separated by a thin...

Ageing of microstrip gas chambers: problems and solutions (1996)

Bouclier, Roger, Capéans-Garrido, M, Garabatos, C, Manzin, G, Million, Gilbert, Ropelewski, Leszek, ...

The experimental set-up and the procedures used for studying the long-term behaviour of micro-strip gas chambers under sustained irradiation are described in detail. The most significant measurements...

High rate operation of micro-strip gas chambers on diamond-coated glass (1995)

Bouclier, Roger, Capéans-Garrido, M, Million, Gilbert, Ropelewski, Leszek, Sauli, Fabio, Temmel, T, ...

Very high rate operation of micro­strip gas chambers can be achieved using slightly conducting substrates. We describe preliminary measurements realized with detectors manufactured on boro-silicate...

Optimization of design and beam test of microstrip gas chambers (1995)

Bouclier, Roger, Capéans-Garrido, M, Evans, J, Garabatos, C, Manzin, G, Million, Gilbert, ...

We describe recent experimental and theoretical work aimed at optimizing the geometry and the operation of micro-strip gas chambers in order to improve their performance and reliability. With the...