Mor, I., Vartsky, D., Bar, D., Feldman, G., Goldberg, M. B., Katz, D., ...
Two generations of a novel detector for high-resolution transmission imaging and spectrometry of fast-neutrons are presented. These devices are based on a hydrogenous fiber scintillator screen and...
THGEM operation in Ne and Ne/CH4 (2009)
Cortesi, M., Peskov, V., Bartesaghi, G., Miyamoto, J., Cohen, S., Chechik, R., ...
The operation of Thick Gaseous Electron Multipliers (THGEM) in Ne and Ne/CH4 mixtures, features high multiplication factors at relatively low operation potentials, in both single- and double-THGEM...
G. Laczko, V. Dangendorf, H. Schuhmacher, K. Tittelmeier, Ptb Braunschweig
results of carbon ion track structure imaging in low pressure gas
Signal and Noise Analysis in TRION -Time-Resolved Integrative Optical Fast Neutron Detector (2008)
Vartsky, D., Feldman, G., Mor, I., Goldberg, M. B., Bar, D., Dangendorf, V.
TRION is a sub-mm spatial resolution fast neutron imaging detector, which employs an integrative optical time-of-flight technique. The detector was developed for fast neutron resonance radiography, a...
A concise review on THGEM detectors (2008)
Breskin, A., Alon, R., Cortesi, M., Chechik, R., Miyamoto, J., Dangendorf, V., ...
We briefly review the concept and properties of the Thick GEM (THGEM); it is a robust, high-gain gaseous electron multiplier, manufactured economically by standard printed-circuit drilling and...
Operation of a Thick Gas Electron Multiplier (THGEM) in Ar, Xe and Ar-Xe (2007)
Alon, R., Miyamoto, J., Cortesi, M., Breskin, A., Chechik, R., Carne, I., ...
We present the results of our recent studies of a Thick Gaseous Electron Multiplier (THGEM)-based detector, operated in Ar, Xe and Ar:Xe (95:5) at various gas pressures. Avalanche-multiplication...
Investigations of a THGEM-based imaging detector (2007)
Cortesi, M., Alon, R., Chechik, R., Breskin, A., Vartsky, D., Dangendorf, V.
We present the results of our recent studies on a Thick Gas Electron Multiplier (THGEM)-based imaging detector prototype. It consists of two 100x100 mm^2 THGEM electrodes in cascade, coupled to a...
A Compact High-Energy Neutron Spectrometer (2007)
Brooks, F. D., Buffler, A., Allie, M. S., Herbert, M. S., Nchodu, M. R., Jones, D. T. L., ...
A compact liquid organic neutron spectrometer (CLONS) based on a single NE213 liquid scintillator (5 cm diam. x 5 cm) is described. The spectrometer is designed to measure neutron fluence spectra...
A position- and time-sensitive photon-counting detector with delay-line read-out (2007)
Jagutzki, O., Dangendorf, V., Lauck, R., Czasch, A., Milnes, J.
We have developed image intensifier tubes with delay-anode read-out for time- and position-sensitive photon counting. The timing precision is better than 1 ns with 1000x1000 pixels position...
A compact high-energy neutron spectrometer (2007)
Brooks, F. D., Buffler, A., Allie, M. S., Herbert, M. S., Nchodu, M. R., Jones, D. T. L., ...
A compact liquid organic neutron spectrometer based on a single NE213 liquid scintillator (5 cm diameter × 5 cm) is described. The spectrometer is designed to measure neutron fluence spectra over...
Neutron imaging with a Micromegas detector (2006)
Jeanneau, F., Junca, R., Pancin, J., Voytchev, M., Andriamonje, S., Dangendorf, V., ...
The micropattern gaseous detector Micromegas has been developed for several years in Saclay and presents good performance for neutron detection. A prototype for neutron imaging has been designed and...
Advances in imaging THGEM-based detectors (2006)
Cortesi, M., Chechik, R., Breskin, A., Guedes, G., Dangendorf, V., Vartzky, D., ...
The thick GEM (THGEM) [1] is an "expanded" GEM, economically produced in the PCB industry by simple drilling and etching in G-10 or other insulating materials (fig. 1). Similar to GEM, its operation...
Thick GEM-like (THGEM) detectors and their possible applications (2006)
Chechik, R., Cortesi, M., Breskin, A., Vartsky, D., Bar, D., Dangendorf, V.
Thick GEM-like (THGEM) electrodes are robust, high gain gaseous electron multipliers, economically-manufactured by standard drilling and etching of thin printed circuit board or other materials....
Weissman, L., Gai, M., Breskin, A., Chechik, R., Dangendorf, V., Tittelmeier, K., ...
We studied electron amplification and light emission from avalanches in oxygen-containing gas mixtures. The mixtures investigated in this work included, among others, CO2 and N2O mixed with...
A time projection chamber with optical readout for charged particle track structure imaging (2004)
Titt, U., Breskin, A., Chechik, R., Dangendorf, V., Schmidt-Boecking, H., Schuhmacher, H.
We report about a nuclear track imaging system which is designed to study in detail the ionization topology of charged particle tracks in a low-pressure gas. The detection method is based on a time...
Titt, U., Dangendorf, V., Schuhmacher, H.
We describe first results obtained with a track structure imaging system for measuring the ionisation topology of charged particles in a low-pressure gas. The detection method is based on a time...
Imaging of microscopic features of charged-particle tracks in a low-pressure gas (2004)
Dangendorf, V., Schuhmacher, H., Titt, U., Tittelmeier, K.
An imaging system for measuring the spatial distribtion of charged particle tracks in a low-pressure gas is presented. The method is based on an optically read out time projection chamber. Results of...
Titt, U., Dangendorf, V., Grosswendt, B., Schuhmacher, H.
An imaging system for measuring the track structure of charged particles in a low-pressure gas is presented. We describe the experimental method and compare experimental results with first results of...
Detectors for Time-of-Flight Fast-Neutron Radiography: 1. Neutron Counting Gas Detector (2004)
Dangendorf, V., Breskin, A., Chechik, R., Goldberg, M., Laczko, G., Mor, I., ...
One of our two methods for fast-neutron imaging with spectrometric capability is presented here. It is a neutron-counting technique based on a hydrogenous neutron converter coupled to Gaseous...
Time-resolved fast neutron imaging: simulation of detector performance (2004)
Vartsky, D., Mor, I., Goldberg, M. B., Mardor, I., Feldman, G., Bar, D., ...
We have analyzed and compared the performance of two novel fast-neutron imaging methods with time-of-flight spectroscopy capability. Using MCNP and GEANT code simulations of neutron and...
Detectors for Energy-Resolved Fast Neutron Imaging (2004)
Dangendorf, V., Breskin, A., Chechik, R., Feldman, G., Goldberg, M. B., Jagutzki, O., ...
Two detectors for energy-resolved fast-neutron imaging in pulsed broad-energy neutron beams are presented. The first one is a neutron-counting detector based on a solid neutron converter coupled to a...
First Commissioning Results of the n_TOF Facility at CERN (2004)
Borcea, C, Buono, S, Cennini, P, Dahlfors, M, Dangendorf, V, Ferrari, A, ...
n_TOF, the new neutron time of flight facility at CERN, is now operational and has been commisioned.
Recent Investigations of Cascaded GEM and MHSP detectors (2003)
Chechik, R., Breskin, A., Guedes, G. P., Moermann, D., Maia, J., Dangendorf, V., ...
We present results from our recent investigations on detectors comprising cascaded gas electron multipliers (GEM) and cascaded GEMs with micro-hole and strip (MHSP) electrodes. We discuss the factors...
High Resolution Heavy Ion Track Structure Imaging (2003)
Laczko, G., Dangendorf, V., Kraemer, M., Schardt, D., Tittelmeier, K.
The difference in the relative biological efficincy (RBE) of ions of same linear energy transfer (LET) but different atomic number (Z) can be attributed to the difference in the radial ionisation...
Fast Neutron Resonance Radiography in a Pulsed Neutron Beam (2003)
Dangendorf, V., Laczko, G., Kersten, C., Jagutzki, O., Spillmann, U.
The feasibility of performing fast neutron resonance radiography at the PTB accelerator facility is studied. A neutron beam of a broad spectral distribution is produced by a pulsed 13 MeV deuterium...
Results from the Commissioning of the n-TOF Spallation Neutron Source at CERN (2002)
Borcea, C, Cennini, P, Dahlfors, M, Ferrari, A, García-Muñoz, G, Haefner, P, ...
The new neutron time-of-flight facility (n_TOF) has been built at CERN and is now operational. The facility is intended for the measurement of neutron induced cross sections of relevance to...
First Commissioning Results from the nTOF Facility at CERN (2002)
Borcea, A, Buono, S, Cennini, P, Dahlfors, M, Dangendorf, V, Ferrari, A, ...
The Neutron Time of Flight Facility at CERN (2002)
Vlachoudis, V, Borcea, C, Buono, S, Cennini, P, Dahlfors, M, Dangendorf, V, ...
First Results from the Neutron (nTOF) facility at CERN (2002)
Borcea, C, Buono, S, Cennini, P, Dahlfors, M, Dangendorf, V, Ferrari, A, ...
Schuhmacher, H., Dangendorf, V.
In recent years, several new methods have been developed for track structure investigations. They use macroscopic gas volumes to transfer the results to microscopic dimensions and are based on either...
Imaging of Microscopic Features of Charged Particle Tracks in a Low-pressure Gas (2002)
Dangendorf, V., Schuhmacher, H., Titt, U., Tittelmeier, K.
An imaging system for measuring the spatial distribution of charged particle tracks in a low-pressure gas is presented. The method is based on an optically read out time projection chamber. Results...
Concept of a Neutron Dosemeter Based on a Recoil Particle Track Chamber (1997)
Titt, U., Breskin, A., Chechik, R., Dangendorf, V., Grosswendt, B., Schuhmacher, H.
A new experimental approach for a neutron dosemeter and spectrometer is presented. It is based on an optically read out time projection chamber (TPC). Charged particles entering a low-pressure...
Measurement of Neutron Kerma Factors in C and O: Neutron Energy Range of 20 MeV to 70 MeV (1995)
Schrewe, U.J., Newhauser, W.D., Brede, H.J., Dangendorf, V., DeLuca, P.M., Gerdung, S., ...
Kerma factors for oxygen and carbon have been measured in nearly monoenergetic neutron beams of energies between 34 MeV and 66 MeV. The kerma was determined experimentally with low pressure...
K- TO K- SHELL CHARGE TRANSFER IN CLOSE COLLISIONS OF HYDROGEN-LIKE Kr IONS ON Mo (1989)
Wintermeyer, G., Dangendorf, V., Gabr, M., Kambara, T., Mokler, P., Reusch, S., ...
The production and sharing of K - shell vacancies has been investigated with collisions of H - like and Li - like 5.5 MeV/nucl. Kr ions on a Mo solid target. We measured the impact parameter...
MULTIPLE IONISATION AND COLLECTIVE ELECTRON EMISSION IN MeV/u URANIUM-ION RARE GAS COLLISIONS (1989)
Ullrich, J., Olson, R., Schmidt-BÖcking, H., Schmidt, S., DÖrner, R., Dangendorf, V., ...
The multiple ionisation of Ne and Ar gas targets in collisions with high-energy, highly-charged Uranium projectiles (1.4 MeV/u U32+, 5.9 MeV/u U65+) has been investigated. Applying a recently...
K- TO K- SHELL CHARGE TRANSFER IN CLOSE COLLISIONS OF HYDROGEN-LIKE Kr IONS ON Mo (1989)
Wintermeyer, G., Dangendorf, V., Gabr, M., Kambara, T., Mokler, P., Reusch, S., ...
The production and sharing of K - shell vacancies has been investigated with collisions of H - like and Li - like 5.5 MeV/nucl. Kr ions on a Mo solid target. We measured the impact parameter...
MULTIPLE IONISATION AND COLLECTIVE ELECTRON EMISSION IN MeV/u URANIUM-ION RARE GAS COLLISIONS (1989)
Ullrich, J., Olson, R., Schmidt-BÖcking, H., Schmidt, S., DÖrner, R., Dangendorf, V., ...
The multiple ionisation of Ne and Ar gas targets in collisions with high-energy, highly-charged Uranium projectiles (1.4 MeV/u U32+, 5.9 MeV/u U65+) has been investigated. Applying a recently...
K- TO K- SHELL CHARGE TRANSFER IN CLOSE COLLISIONS OF HYDROGEN-LIKE Kr IONS ON Mo (1989)
Wintermeyer, G., Dangendorf, V., Gabr, M., Kambara, T., Mokler, P., Reusch, S., ...
The production and sharing of K - shell vacancies has been investigated with collisions of H - like and Li - like 5.5 MeV/nucl. Kr ions on a Mo solid target. We measured the impact parameter...
MULTIPLE IONISATION AND COLLECTIVE ELECTRON EMISSION IN MeV/u URANIUM-ION RARE GAS COLLISIONS (1989)
Ullrich, J., Olson, R., Schmidt-BÖcking, H., Schmidt, S., DÖrner, R., Dangendorf, V., ...
The multiple ionisation of Ne and Ar gas targets in collisions with high-energy, highly-charged Uranium projectiles (1.4 MeV/u U32+, 5.9 MeV/u U65+) has been investigated. Applying a recently...