The Beam Gas Vertex detector (BGV) is an innovative beam profile monitor based on the reconstruction of beam-gas interaction vertices which is being developed as part of the High Luminosity LHC ...project. Tracks are identified using several planes of scintillating fibres, located outside the beam vacuum chamber and perpendicular to the beam axis. The gas pressure in the interaction volume is adjusted such as to provide an adequate trigger rate, without disturbing the beam. A BGV demonstrator monitoring one of the two LHC beams was fully installed and commissioned in 2016. First data and beam size measurements show that the complete detector and data acquisition system is operating as expected. The BGV operating parameters are now being optimised and the reconstruction algorithms developed to produce accurate and fast reconstruction on a CPU farm in order to provide real time beam profile measurements to the LHC operators.
The Beam Gas Vertex detector (BGV) is an innovative beam profile monitor based on the reconstruction of beam-gas interaction vertices which is being developed as part of the High Luminosity LHC ...project. Tracks are identified using several planes of scintillating fibres, located outside the beam vacuum chamber and perpendicular to the beam axis. The gas pressure in the interaction volume is adjusted such as to provide an adequate trigger rate, without disturbing the beam. A BGV demonstrator monitoring one of the two LHC beams was fully installed and commissioned in 2016. First data and beam size measurements show that the complete detector and data acquisition system is operating as expected. The BGV operating parameters are now being optimised and the reconstruction algorithms developed to produce accurate and fast reconstruction on a CPU farm in order to provide real time beam profile measurements to the LHC operators.
Purpose - The article seeks to highlight an unconventional way out of the "innovation dilemma", relevant to many business organizations. Innovative management and risk friendliness are necessary, but ...the way in which failure is handled and the resulting fear of making mistakes block the (innovative) efforts of specialists and managers.Design methodology approach - The article draws on theoretical as well as empirical work. First, the seemingly crystal-clear concept of "error" is elaborated and the rare category of "creative errors" is introduced. Second, illustrative findings from a case study in the automotive sector are reported.Findings - The paper suggests that a culturally exacerbated antipathy towards errors ultimately leads to a situation of pronounced innovation incompetence in which creative behavior is avoided. The article points out that it is not an "absolution of mistakes" that is required, but a tolerance for legitimate errors which should only occur under exceptional circumstances. The authors underlines that fairness in dealing with errors is considerably more important than a misguided attempt to create or maintain harmony. In addition to the philosophy and potential of this unusual incentive system, possible practical implementation problems are considered.Research limitations implications - Generalization is limited because the findings are based on only one case study. However, because of the vital importance of the so-called "innovation dilemma", the exploratory findings of the study may trigger further empirical research on "creative errors".Practical implications - An initiative like the "Creative Error of the Month" may help to bring about cultural change towards a climate of trust and confidence in which innovative commitment is treated fairly even if it does not in fact succeed.Originality value - Common approaches to enhance organizational innovativeness reward "success stories" or praise "zero-based cultures". This case study suggests that a sophisticated initiative revolving around the "hidden" innovative potential of "creative errors" and "tragic failures" might prove to be a successful offbeat attempt at stimulating creativity and innovative behaviour in enterprises.
We present a (re)investigation of the hexaoxometalates Li8MO6 (M = Sn, Pb, Zr, Hf) and Li7MO6 (M = Nb, Ta, Sb, Bi). Lithium motion and ionic conductivity in the hexaoxometalates were studied using ...impedance spectroscopy (for Li7MO6, M = Sb, Bi, Ta) and 6Li and 7Li solid-state nuclear magnetic resonance (for Li7TaO6). The NMR data indicate a considerable exchange of Li among the tetrahedral and octahedral voids even at ambient temperature. In an investigation of the crystal structures using laboratory and synchrotron X-ray powder diffraction techniques, the structures of Li7TaO6, Li7NbO6, and Li7SbO6 could be solved and refined. All three reveal a triclinic metric (Li7SbO6, triclinic, P1̄, a = 5.38503(6) Å, b = 5.89164(7) Å, c = 5.43074(6) Å, α = 117.2210(6)°, β = 119.6311(6)°, γ = 63.2520(7)°, V = 127.454(3) Å3, Z = 1; Li7NbO6, triclinic, P1̄, a = 5.37932(9) Å, b = 5.91942(11) Å, c = 5.37922(9) Å, α = 117.0033(9)°, β = 119.6023(7)°, γ = 63.2570(9)°, V = 126.938(4) Å3, Z = 1; Li7TaO6, triclinic, P1̄, a = 5.38486(2) Å, b = 5.92014(3) Å, c = 5.38551(2) Å, α = 117.0108(2)°, β = 119.6132(2)°, γ = 63.2492(2)°, V = 127.208(1) Å3, Z = 1.
Protons in near earth orbit Alcaraz, J.; Ambrosi, G.; Ao, L. ...
Physics letters. B,
2000, Letnik:
472, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380
km. Above the geomagnetic ...cutoff the observed spectrum is parameterized by a power law. Below the geomagnetic cutoff a substantial second spectrum was observed concentrated at equatorial latitudes with a flux ∼70
m
−2
s
−1
sr
−1. Most of these second spectrum protons follow a complicated trajectory and originate from a restricted geographic region.
Helium in near Earth orbit Ambrosi, G.; Ao, L.; Azzarello, P. ...
Physics letters. B,
2000, Letnik:
494, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The helium spectrum from 0.1 to 100 GeV/nucleon was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380 km. Above the geomagnetic cutoff the ...spectrum is parameterized by a power law. Below the geomagnetic cutoff a second helium spectrum was observed. In the second helium spectra over the energy range 0.1 to 1.2 GeV/nucleon the flux was measured to be
(6.3±0.9)×10
−3
(
m
2
sec
sr)
−1
and more than ninety percent of the helium was determined to be
3He (at the 90% CL). Tracing helium from the second spectrum shows that about half of the
3He travel for an extended period of time in the geomagnetic field and that they originate from restricted geographic regions similar to protons and positrons.
The CMS high level trigger Adam, W.; Bergauer, T.; Deldicque, C. ...
The European physical journal. C, Particles and fields,
06/2006, Letnik:
46, Številka:
3
Journal Article
Recenzirano
Odprti dostop
At the Large Hadron Collider at CERN the proton bunches cross at a rate of 40 MHz. At the Compact Muon Solenoid experiment the original collision rate is reduced by a factor of \(\mathcal{O}\) (1000) ...using a Level-1 hardware trigger. A subsequent factor of \(\mathcal{O}\) (1000) data reduction is obtained by a software-implemented high level trigger (HLT) selection that is executed on a multi-processor farm. In this review we present in detail prototype CMS HLT physics selection algorithms, expected trigger rates and trigger performance in terms of both physics efficiency and timing.
Search for antihelium in cosmic rays Alcaraz, J.; Alvisi, D.; Ambrosi, G. ...
Physics letters. B,
1999, Letnik:
461, Številka:
4
Journal Article
Recenzirano
Odprti dostop
The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 in a 51.7° orbit at altitudes between 320 and 390
km. A total of 2.86×10
6 helium nuclei were ...observed in the rigidity range 1 to 140
GV. No antihelium nuclei were detected at any rigidity. An upper limit on the flux ratio of antihelium to helium of <1.1×10
−6 is obtained.
Die Nutzung des Wissens und die Aktivierung des Lernpotenzials von Beschäftigten gelten als Schlüssel zur Sicherung dauerhafter Wettbewerbsvorteile von Unternehmen. Vor diesem Hintergrund rücken ...partizipative Gestaltungsüberlegungen stärker in den Mittelpunkt arbeitswissenschaftlicher Untersuchungen. Gilt aus arbeitspsychologischer Sicht die Selbstregulation der Arbeit seit langem als Kernelement einer persönlichkeitsförderlichen und humanen Arbeitsgestaltung, deuten inzwischen empirische Befunde auf eine Reihe von Problemen hin, die für die Beschäftigten in wissensintensiven Arbeitsformen mit einem hohen Partizipationsgrad einhergehen. In diesem Beitrag wird der Zusammenhang von Partizipation und Belastung am Beispiel von Beschäftigten in Beratungsunternehmen empirisch untersucht.
The utilization of employees’ knowledge and the activation of their learning potential are considered as keys to ensure permanent competitive advantages of enterprises. Against this background, studies in occupational sciences focus increasingly participatory configurations of work. In the field of occupational psychology, self-regulation of work has been valid for a long time as core element of a personality supporting and human work design. However, recent empirical findings now point to a number of problems for employees in knowledge-intensive forms of work which are associated with a high degree of participation. In this article the correlation between participation and strain has been empirical examined at the example of employees in consulting firms.
The utilization of employees' knowledge and the activation of their learning potential are considered as keys to ensure permanent competitive advantages of enterprises. Against this background, ...studies in occupational sciences focus increasingly participatory configurations of work. In the field of occupational psychology, self-regulation of work has been valid for a long time as core element of a personality supporting and human work design. However, recent empirical findings now point to a number of problems for employees in knowledge-intensive forms of work which are associated with a high degree of participation. In this article, the correlation between participation and the strain has been empirical examined at the example of employees in consulting firms. PUB ABSTRACT
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