Publications (63)
Helium-Xenon mixtures to improve topological signature in high pressure gas Xenon TPCs
R. Felkai, F. Monrabal, D. Gonzalez-DÃaz +72
Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (…
Exclusive electroproduction of two pions at HERA
ZEUS collaboration, H. Abramowicz, I. Abt +302
The exclusive electroproduction of two pions in the mass range 0.4 < MÏÏ < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb-1. The…
Updated baseline for a staged Compact Linear Collider
The CLIC, CLICdp collaborations, : +515
The Compact Linear Collider (CLIC) is a multi-TeV high-luminosity linear e+e- collider under development. For an optimal exploitation of its physics potential, CLIC is foreseen to…
Sensitivity of the NEXT experiment to Xe-124 double electron capture
G. MartÃnez-Lema, M. MartÃnez-Vara, M. Sorel +88
Double electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different,…
Construction and Commissioning of the CALICE Analog Hadron Calorimeter Prototype
C. Adloff, Y. Karyotakis, J. Repond +225
An analog hadron calorimeter (AHCAL) prototype of 5.3 nuclear interaction lengths thickness has been constructed by members of the CALICE Collaboration. The AHCAL prototype consist…
Design, Construction and Testing of the Digital Hadron Calorimeter (DHCAL) Electronics
C. Adams, A. Bambaugh, B. Bilki +30
A novel hadron calorimeter is being developed for future lepton colliding beam detectors. The calorimeter is optimized for the application of Particle Flow Algorithms (PFAs) to the…
Measurements of the Rate Capability of Various Resistive Plate Chambers
M. Affatigato, U. Akgun, B. Bilki +7
Resistive Plate Chambers (RPCs) exhibit a significant loss of efficiency for the detection of particles, when subjected to high particle fluxes. This rate limitation is related to…
Analysis of Testbeam Data of the Highly Granular RPC-Steel CALICE Digital Hadron Calorimeter and Validation of Geant4 Monte Carlo Models
CALICE Collaboration, M. Chefdeville, J. Repond +93
We present a study of the response of the highly granular Digital Hadronic Calorimeter with steel absorbers, the Fe-DHCAL, to positrons, muons, and pions with momenta ranging from…
Performance of the first prototype of the CALICE scintillator strip electromagnetic calorimeter
CALICE Collaboration, K. Francis, J. Repond +191
A first prototype of a scintillator strip-based electromagnetic calorimeter was built, consisting of 26 layers of tungsten absorber plates interleaved with planes of 45x10x3 mm3 pl…
Radiogenic backgrounds in the NEXT double beta decay experiment
NEXT Collaboration, P. Novella, B. Palmeiro +88
Natural radioactivity represents one of the main backgrounds in the search for neutrinoless double beta decay. Within the NEXT physics program, the radioactivity-induced background…
Shower development of particles with momenta from 1 to 10 GeV in the CALICE Scintillator-Tungsten HCAL
C. Adloff, J. -J. Blaising, M. Chefdeville +215
Lepton colliders are considered as options to complement and to extend the physics programme at the Large Hadron Collider. The Compact Linear Collider (CLIC) is an collide…
Top-Quark Physics at the CLIC Electron-Positron Linear Collider
H. Abramowicz, N. Alipour Tehrani, D. Arominski +114
The Compact Linear Collider (CLIC) is a proposed future high-luminosity linear electron-positron collider operating at three energy stages, with nominal centre-of-mass energies: 38…
Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA
ZEUS Collaboration, H. Abramowicz, I. Abt +300
Measurements of neutral current cross sections for deep inelastic scattering in e+p collisions at HERA with a longitudinally polarised positron beam are presented. The single-diffe…
Demonstration of the event identification capabilities of the NEXT-White detector
NEXT Collaboration, P. Ferrario, J. M. Benlloch-RodrÃguez +88
In experiments searching for neutrinoless double-beta decay, the possibility of identifying the two emitted electrons is a powerful tool in rejecting background events and therefor…
Studies on fast triggering and high precision tracking with Resistive Plate Chambers
G. Aielli, B. Bilki, R. Ball +27
We report on studies of fast triggering and high-precision tracking using Resistive Plate Chambers (RPCs). Two beam tests were carried out with the 180 GeV muon beam at CERN using…
Radio Frequency and DC High Voltage Breakdown of High Pressure Helium, Argon, and Xenon
K. Woodruff, J. Baeza-Rubio, D. Huerta +91
Motivated by the possibility of guiding daughter ions from double beta decay events to single-ion sensors for barium tagging, the NEXT collaboration is developing a program of R&D…
Testing Hadronic Interaction Models using a Highly Granular Silicon-Tungsten Calorimeter
The CALICE Collaboration, B. Bilki, J. Repond +148
A detailed study of hadronic interactions is presented using data recorded with the highly granular CALICE silicon-tungsten electromagnetic calorimeter. Approximately 350,000 selec…
Demonstration of Single Barium Ion Sensitivity for Neutrinoless Double Beta Decay using Single Molecule Fluorescence Imaging
A. D. McDonald, B. J. P. Jones, D. R. Nygren +71
A new method to tag the barium daughter in the double beta decay of Xe is reported. Using the technique of single molecule fluorescent imaging (SMFI), individual barium dic…
Higgs Physics at the CLIC Electron-Positron Linear Collider
H. Abramowicz, A. Abusleme, K. Afanaciev +121
The Compact Linear Collider (CLIC) is an option for a future e+e- collider operating at centre-of-mass energies up to 3 TeV, providing sensitivity to a wide range of new physics ph…
Detector Technologies for CLIC
A. C. Abusleme Hoffman, G. Parès, T. Fritzsch +129
The Compact Linear Collider (CLIC) is a high-energy high-luminosity linear electron-positron collider under development. It is foreseen to be built and operated in three stages, at…
Dependence of polytetrafluoroethylene reflectance on thickness at visible and ultraviolet wavelengths in air
S. Ghosh, J. Haefner, J. MartÃn-Albo +88
Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. However, the reflectance of PTFE is a fun…
Inclusive-jet photoproduction at HERA and determination of alphas
ZEUS Collaboration, H. Abramowicz, I. Abt +303
Inclusive-jet cross sections have been measured in the reaction ep->e+jet+X for photon virtuality Q2 < 1 GeV2 and gamma-p centre-of-mass energies in the region 142 < W(gamma-p) < 2…
Design, Construction and Commissioning of the Digital Hadron Calorimeter - DHCAL
C. Adams, A. Bambaugh, B. Bilki +33
A novel hadron calorimeter is being developed for future lepton colliding beam detectors. The calorimeter is optimized for the application of Particle Flow Algorithms (PFAs) to the…
Production of Z0 bosons in elastic and quasi-elastic ep collisions at HERA
ZEUS collaboration, H. Abramowicz, I. Abt +300
The production of Z0 bosons in the reaction ep -> eZ0p*, where p* stands for a proton or a low-mass nucleon resonance, has been studied in ep collisions at HERA using the ZEUS dete…
The Large Hadron-Electron Collider at the HL-LHC
P. Agostini, H. Aksakal, S. Alekhin +333
The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting ener…
Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS
ZEUS collaboration, H. Abramowicz, I. Abt +311
Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integ…
DHCAL with Minimal Absorber: Measurements with Positrons
The CALICE Collaboration, B. Freund, C. Neubüser +99
In special tests, the active layers of the CALICE Digital Hadron Calorimeter prototype, the DHCAL, were exposed to low energy particle beams, without being interleaved by absorber…
Search for single-top production in ep collisions at HERA
ZEUS Collaboration, H. Abramowicz, I. Abt +300
A search for single-top production, , has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of $0.37\fbi$. No e…
Measurement of the Rate Capability of Resistive Plate Chambers
B. Bilki, J. Butler, E. May +6
This paper reports on detailed measurements of the performance of Resistive Plate Chambers in a proton beam with variable intensity. Short term effects, such as dead time, are stud…
Low-diffusion Xe-He gas mixtures for rare-event detection: Electroluminescence Yield
A. F. M. Fernandes, C. A. O. Henriques, R. D. P. Mano +88
High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as d…
Calibration of a digital hadron calorimeter with muons
B. Bilki, J. Butler, T. Cundiff +15
The calibration procedure of a finely granulated digital hadron calorimeter with Resistive Plate Chambers as active elements is described. Results obtained with a stack of nine lay…
Track segments in hadronic showers in a highly granular scintillator-steel hadron calorimeter
CALICE Collaboration, C. Adloff, J. -J. Blaising +205
We investigate the three dimensional substructure of hadronic showers in the CALICE scintillator-steel hadronic calorimeter. The high granularity of the detector is used to find tr…
Recent DHCAL Developments
J. Repond
This talk reports on recent progress concerning the development of a Digital Hadron Calorimeter with Resistive Plate Chambers as active elements. After the successful testing of a…
CALICE Report to the Calorimeter R&D Review Panel
J-C Brient, P Dauncey, E. Garutti +7
The report describes the status of the calorimeter R&D for ILC detector performed in the CALICE collaboration. This status has been presented to the review panel at the LCWS07 work…
NLO QCD predictions for internal jet shapes in DIS at HERA
N. Kauer, L. Reina, J. Repond +1
The transverse momentum flow inside jets is a sensitive measure of internal jet structure. For the current jets in deep inelastic scattering this jet shape measure is determined at…
Calibration of the NEXT-White detector using decays
G. MartÃnez-Lema, J. A. Hernando Morata, B. Palmeiro +74
The NEXT-White (NEW) detector is currently the largest radio-pure high-pressure xenon gas time projection chamber with electroluminescent readout in the world. NEXT-White has been…
Validation of GEANT4 Monte Carlo Models with a Highly Granular Scintillator-Steel Hadron Calorimeter
C. Adloff, J. Blaha, J. -J. Blaising +169
Calorimeters with a high granularity are a fundamental requirement of the Particle Flow paradigm. This paper focuses on the prototype of a hadron calorimeter with analog readout, c…
Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 8: Instrumentation Frontier
M. Demarteau, R. Lipton, H. Nicholson +211
These reports present the results of the 2013 Community Summer Study of the APS Division of Particles and Fields ("Snowmass 2013") on the future program of particle physics in the…
Letter of Intent: The Accelerator Neutrino Neutron Interaction Experiment (ANNIE)
I. Anghel, J. F. Beacom, M. Bergevin +30
Neutron tagging in Gadolinium-doped water may play a significant role in reducing backgrounds from atmospheric neutrinos in next generation proton-decay searches using megaton-scal…
Measurement of beauty production in deep inelastic scattering at HERA using decays into electrons
ZEUS collaboration, H. Abramowicz, I. Abt +311
The production of beauty quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared Q^2 > 10 GeV^2, using an integrated luminosit…
Hadronic Energy Resolution of a Combined High Granularity Scintillator Calorimeter System
CALICE Collaboration, J. Repond, L. Xia +106
This paper presents results obtained with the combined CALICE Scintillator Electromagnetic Calorimeter, Analogue Hadronic Calorimeter and Tail Catcher & Muon Tracker, three high gr…
Construction and Response of a Highly Granular Scintillator-based Electromagnetic Calorimeter
CALICE collaboration, J. Repond, L. Xia +78
A highly granular electromagnetic calorimeter with scintillator strip readout is being developed for future lepton collider experiments. A prototype of 21.5 depth and $180 \t…
Measurement of the t dependence in exclusive photoproduction of Upsilon(1S) mesons at HERA
ZEUS collaboration, H. Abramowicz, I. Abt +300
The exclusive photoproduction reaction gamma p -> Upsilon(1S) p has been studied with the ZEUS detector in ep collisions at HERA using an integrated luminosity of 468 pb^-1. The me…
Electron drift properties in high pressure gaseous xenon
NEXT Collaboration, A. Simón, R. Felkai +73
Gaseous time projection chambers (TPC) are a very attractive detector technology for particle tracking. Characterization of both drift velocity and diffusion is of great importance…
The Compact Linear Collider (CLIC) - 2018 Summary Report
The CLIC, CLICdp collaborations, : +692
The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear collider under development at CERN. Following the CLIC conceptual design published in 2012, this r…
Energy calibration of the NEXT-White detector with 1% resolution near Q of Xe
J. Renner, G. DÃaz López, P. Ferrario +87
Excellent energy resolution is one of the primary advantages of electroluminescent high pressure xenon TPCs, and searches for rare physics events such as neutrinoless double-beta d…
Shower development of particles with momenta from 15 GeV to 150 GeV in the CALICE scintillator-tungsten hadronic calorimeter
The CALICE collaboration, M. Chefdeville, Y. Karyotakis +178
We present a study of showers initiated by electrons, pions, kaons, and protons with momenta from 15 GeV to 150 GeV in the highly granular CALICE scintillator-tungsten analogue had…
Measurement of radon-induced backgrounds in the NEXT double beta decay experiment
NEXT Collaboration, P. Novella, B. Palmeiro +79
The measurement of the internal Rn activity in the NEXT-White detector during the so-called Run-II period with Xe-depleted xenon is discussed in detail, together wi…
Initial results on energy resolution of the NEXT-White detector
J. Renner, P. Ferrario, G. MartÃnez-Lema +77
One of the major goals of the NEXT-White (NEW) detector is to demonstrate the energy resolution that an electroluminescent high pressure xenon TPC can achieve for high energy track…
Electromagnetic response of a highly granular hadronic calorimeter
C. Adloff, J. Blaha, J. -J. Blaising +164
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For the hadronic c…
Study of the interactions of pions in the CALICE silicon-tungsten calorimeter prototype
C. Adloff, Y. Karyotakis, J. Repond +155
A prototype silicon-tungsten electromagnetic calorimeter for an ILC detector was tested in 2007 at the CERN SPS test beam. Data were collected with electron and hadron beams in the…
Neutral Bremsstrahlung emission in xenon unveiled
C. A. O. Henriques, P. Amedo, J. M. R. Teixeira +90
We present evidence of non-excimer-based secondary scintillation in gaseous xenon, obtained using both the NEXT-White TPC and a dedicated setup. Detailed comparison with first-prin…
Electroluminescence TPCs at the thermal diffusion limit
C. A. O. Henriques, C. M. B. Monteiro, D. González-DÃaz +78
The NEXT experiment aims at searching for the hypothetical neutrinoless double-beta decay from the Xe isotope using a high-purity xenon TPC. Efficient discrimination of t…
Measurement of heavy-quark jet photoproduction at HERA
ZEUS Collaboration, H. Abramowicz, I. Abt +309
Photoproduction of beauty and charm quarks in events with at least two jets has been measured with the ZEUS detector at HERA using an integrated luminosity of 133 . The fr…
Mitigation of Backgrounds from Cosmogenic Xe in Xenon Gas Experiments using He Neutron Capture
L. Rogers, B. J. P. Jones, A. Laing +89
\Xe{136} is used as the target medium for many experiments searching for \bbnonu. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutr…
Scaled momentum distributions for K0s and Lambda/bar Lambda in DIS at HERA
ZEUS Collaboration, H. Abramowicz, I. Abt +300
Scaled momentum distributions for the strange hadrons K0s and Lambda/bar Lambda were measured in deep inelastic ep scattering with the ZEUS detector at HERA using an integrated lum…
The Next White (NEW) detector
F. Monrabal, J. J. Gómez-Cadenas, J. F. Toledo +72
Conceived to host 5 kg of xenon at a pressure of 15 bar in the fiducial volume, the NEXT- White (NEW) apparatus is currently the largest high pressure xenon gas TPC using electrolu…
Electron Drift and Longitudinal Diffusion in High Pressure Xenon-Helium Gas Mixtures
A. D. McDonald, K. Woodruff, B. Al Atoum +83
We report new measurements of the drift velocity and longitudinal diffusion coefficients of electrons in pure xenon gas and in xenon-helium gas mixtures at 1-9 bar and electric fie…
Study of the loss of Xenon Scintillation in Xenon-Trimethylamine Mixtures
A. M. F. Trindade, J. Escada, A. F. V. Cortez +75
This work investigates the capability of TMA ((CH3)3N) molecules to shift the wavelength of Xe VUV emission (160-188 nm) to a longer, more manageable, wavelength (260-350 nm). Ligh…
Tests of a Novel Design of Resistive Plate Chambers
B. Bilki, F. Corriveau, B. Freund +5
A novel design of Resistive Plate Chambers (RPCs), using only a single resistive plate, is being proposed. Based on this design, two large size prototype chambers were constructed…
Hadronic energy resolution of a highly granular scintillator-steel hadron calorimeter using software compensation techniques
CALICE Collaboration, C. Adloff, J. Blaha +163
The energy resolution of a highly granular 1 m3 analogue scintillator-steel hadronic calorimeter is studied using charged pions with energies from 10 GeV to 80 GeV at the CERN SPS.…
Pion and proton showers in the CALICE scintillator-steel analogue hadron calorimeter
The CALICE Collaboration, B. Bilki, J. Repond +169
Showers produced by positive hadrons in the highly granular CALICE scintillator-steel analogue hadron calorimeter were studied. The experimental data were collected at CERN and FNA…
Design and Electronics Commissioning of the Physics Prototype of a Si-W Electromagnetic Calorimeter for the International Linear Collider
CALICE Collaboration, J. Repond, J. Yu +114
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For the electromag…