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Test Beam Performance Measurements for the Phase I Upgrade of the CMS Pixel Detector
Authors:
M. Dragicevic,
M. Friedl,
J. Hrubec,
H. Steininger,
A. Gädda,
J. Härkönen,
T. Lampén,
P. Luukka,
T. Peltola,
E. Tuominen,
E. Tuovinen,
A. Winkler,
P. Eerola,
T. Tuuva,
G. Baulieu,
G. Boudoul,
L. Caponetto,
C. Combaret,
D. Contardo,
T. Dupasquier,
G. Gallbit,
N. Lumb,
L. Mirabito,
S. Perries,
M. Vander Donckt
, et al. (462 additional authors not shown)
Abstract:
A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase~I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking with a reduced material budget as well as new cooling and powering schemes. A new front-end readout chip mitigates buffering and bandwidth limitations, and allows operation at low comparator…
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A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase~I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking with a reduced material budget as well as new cooling and powering schemes. A new front-end readout chip mitigates buffering and bandwidth limitations, and allows operation at low comparator thresholds. In this paper, comprehensive test beam studies are presented, which have been conducted to verify the design and to quantify the performance of the new detector assemblies in terms of tracking efficiency and spatial resolution. Under optimal conditions, the tracking efficiency is $99.95\pm0.05\,\%$, while the intrinsic spatial resolutions are $4.80\pm0.25\,μ\mathrm{m}$ and $7.99\pm0.21\,μ\mathrm{m}$ along the $100\,μ\mathrm{m}$ and $150\,μ\mathrm{m}$ pixel pitch, respectively. The findings are compared to a detailed Monte Carlo simulation of the pixel detector and good agreement is found.
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Submitted 1 June, 2017;
originally announced June 2017.
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Design and Performance of the Data Acquisition System for the NA61/SHINE Experiment at CERN
Authors:
Andras Laszlo,
Ervin Denes,
Zoltan Fodor,
Tivadar Kiss,
Stuart Kleinfelder,
Csaba Soos,
Dariusz Tefelski,
Tamas Tolyhi,
Gyorgy Vesztergombi,
Oskar Wyszynski
Abstract:
This paper describes the hardware, firmware and software systems used in data acquisition for the NA61/SHINE experiment at the CERN SPS accelerator. Special emphasis is given to the design parameters of the readout electronics for the 40m^3 volume Time Projection Chamber detectors, as these give the largest contribution to event data among all the subdetectors: events consisting of 8bit ADC values…
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This paper describes the hardware, firmware and software systems used in data acquisition for the NA61/SHINE experiment at the CERN SPS accelerator. Special emphasis is given to the design parameters of the readout electronics for the 40m^3 volume Time Projection Chamber detectors, as these give the largest contribution to event data among all the subdetectors: events consisting of 8bit ADC values from 256 timeslices of 200k electronic channels are to be read out with ~100Hz rate. The data acquisition system is organized in "push-data mode", i.e. local systems transmit data asynchronously. Techniques of solving subevent synchronization are also discussed.
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Submitted 26 July, 2015; v1 submitted 5 May, 2015;
originally announced May 2015.
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NA61/SHINE facility at the CERN SPS: beams and detector system
Authors:
N. Abgrall,
O. Andreeva,
A. Aduszkiewicz,
Y. Ali,
T. Anticic,
N. Antoniou,
B. Baatar,
F. Bay,
A. Blondel,
J. Blumer,
M. Bogomilov,
M. Bogusz,
A. Bravar,
J. Brzychczyk,
S. A. Bunyatov,
P. Christakoglou,
T. Czopowicz,
N. Davis,
S. Debieux,
H. Dembinski,
F. Diakonos,
S. DiLuise,
W. Dominik,
T. Drozhzhova,
J. Dumarchez
, et al. (123 additional authors not shown)
Abstract:
NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded the first physics data with hadron beams in 2009 and with ion beams (secondary 7Be beams) in 2011.
NA61/SHINE has greatly profited from the long development of the C…
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NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded the first physics data with hadron beams in 2009 and with ion beams (secondary 7Be beams) in 2011.
NA61/SHINE has greatly profited from the long development of the CERN proton and ion sources and the accelerator chain as well as the H2 beamline of the CERN North Area. The latter has recently been modified to also serve as a fragment separator as needed to produce the Be beams for NA61/SHINE. Numerous components of the NA61/SHINE set-up were inherited from its predecessors, in particular, the last one, the NA49 experiment. Important new detectors and upgrades of the legacy equipment were introduced by the NA61/SHINE Collaboration.
This paper describes the state of the NA61/SHINE facility - the beams and the detector system - before the CERN Long Shutdown I, which started in March 2013.
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Submitted 19 January, 2014;
originally announced January 2014.
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Measurements of Production Properties of K0S mesons and Lambda hyperons in Proton-Carbon Interactions at 31 GeV/c
Authors:
N. Abgrall,
A. Aduszkiewicz,
Y. Ali,
T. Anticic,
N. Antoniou,
J. Argyriades,
B. Baatar,
A. Blondel,
J. Blumer,
M. Bogomilov,
A. Bravar,
W. Brooks,
J. Brzychczyk,
S. A. Bunyatov,
O. Busygina,
P. Christakoglou,
T. Czopowicz,
N. Davis,
S. Debieux,
H. Dembinski,
F. Diakonos,
S. Di Luise,
W. Dominik,
T. Drozhzhova,
J. Dumarchez
, et al. (119 additional authors not shown)
Abstract:
Spectra of K0S mesons and Lambda hyperons were measured in p+C interactions at 31 GeV/c with the large acceptance NA61/SHINE spectrometer at the CERN SPS. The data were collected with an isotropic graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections, charged pion spectra, and charged kaon spectra were previously measured using the same data set. Result…
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Spectra of K0S mesons and Lambda hyperons were measured in p+C interactions at 31 GeV/c with the large acceptance NA61/SHINE spectrometer at the CERN SPS. The data were collected with an isotropic graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections, charged pion spectra, and charged kaon spectra were previously measured using the same data set. Results on K0S and Lambda production in p+C interactions serve as reference for the understanding of the enhancement of strangeness production in nucleus-nucleus collisions. Moreover, they provide important input for the improvement of neutrino flux predictions for the T2K long baseline neutrino oscillation experiment in Japan. Inclusive production cross sections for K0S and Lambda are presented as a function of laboratory momentum in intervals of the laboratory polar angle covering the range from 0 up to 240 mrad. The results are compared with predictions of several hadron production models. The K0S mean multiplicity in production processes <n_K0S> and the inclusive cross section for K0S production were measured and amount to 0.127 +- 0.005 (stat) +- 0.022 (sys) and 29.0 +- 1.6 (stat) +- 5.0 (sys) mb, respectively.
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Submitted 8 September, 2013;
originally announced September 2013.
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Hadron calorimeter with MAPD readout in the NA61/SHINE experiment
Authors:
A. Ivashkin,
F. Akhmadov,
R. Asfandiyarov,
A. Bravar,
A. Blondel,
W. Dominik,
Z. Fodor,
M. Gazdzicki,
M. Golubeva,
F. Guber,
A. Hasler,
A. Korzenev,
S. Kuleshov,
A. Kurepin,
A. Laszlo,
V. Marin,
Yu. Musienko,
O. Petukhov,
D. Röhrich,
A. Sadovsky,
Z. Sadygov,
T. Tolyhi,
F. Zerrouk
Abstract:
The modular hadron calorimeter with micro-pixel avalanche photodiodes readout for the NA61/SHINE experiment at the CERN SPS is presented. The calorimeter consists of 44 independent modules with lead-scintillator sandwich structure. The light from the scintillator tiles is captured by and transported with WLS-fibers embedded in scintillator grooves. The construction provides a longitudinal segmenta…
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The modular hadron calorimeter with micro-pixel avalanche photodiodes readout for the NA61/SHINE experiment at the CERN SPS is presented. The calorimeter consists of 44 independent modules with lead-scintillator sandwich structure. The light from the scintillator tiles is captured by and transported with WLS-fibers embedded in scintillator grooves. The construction provides a longitudinal segmentation of the module in 10 sections with independent MAPD readout. MAPDs with pixel density of $~10^{4}$/mm$^2$ ensure good linearity of calorimeter response in a wide dynamical range. The performance of the calorimeter prototype in a beam test is reported.
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Submitted 28 May, 2012; v1 submitted 22 May, 2012;
originally announced May 2012.