Development and test results of a readout chip for the GERDA experiment

This paper describes the F-CSA104 architecture and its measurement results. The F-CSA104 is for γ spectroscopy with Ge detectors. It is a low noise, fully integrated, four channel XFAB 0.6μm CMOS technology ASIC, that has been developed for the GERDA experiment. Each channel contains a charge sensitive preamplifier (CSA) followed by a 11.7MHz differential line driver. It has been particularly designed to operate in liquid argon (T = 87K/-186°C) and to have a measuring sensitivity of 660e- with an ENC of 110e-, after offline filtering with 10μs shaping, when connected to a 30pF load. Special techniques are used to improve the SNR such as a large input PMOS FET, an integrated 500MΩ CSA feedback resistor and a noise degeneration drain resistor

Inclusive V0V^0 Production Cross Sections from 920 GeV Fixed Target Proton-Nucleus Collisions

Inclusive differential cross sections $d\sigma_{pA}/dx_F$ and $d\sigma_{pA}/dp_t^2$ for the production of \kzeros, \lambdazero, and \antilambda particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The incident beam energy is 920 GeV, corresponding to $\sqrt {s} = 41.6$ GeV in the proton-nucleon system. The ratios of differential cross sections \rklpa and \rllpa are measured to be $6.2\pm 0.5$ and $0.66\pm 0.07$, respectively, for \xf $\approx-0.06$. No significant dependence upon the target material is observed. Within errors, the slopes of the transverse momentum distributions $d\sigma_{pA}/dp_t^2$ also show no significant dependence upon the target material. The dependence of the extrapolated total cross sections $\sigma_{pA}$ on the atomic mass $A$ of the target material is discussed, and the deduced cross sections per nucleon $\sigma_{pN}$ are compared with results obtained at other energies.Comment: 17 pages, 7 figures, 5 table

The QCD transition temperature: results with physical masses in the continuum limit II.

We extend our previous study [Phys. Lett. B643 (2006) 46] of the cross-over temperatures (T_c) of QCD. We improve our zero temperature analysis by using physical quark masses and finer lattices. In addition to the kaon decay constant used for scale setting we determine four quantities (masses of the \Omega baryon, K^*(892) and \phi(1020) mesons and the pion decay constant) which are found to agree with experiment. This implies that --independently of which of these quantities is used to set the overall scale-- the same results are obtained within a few percent. At finite temperature we use finer lattices down to a <= 0.1 fm (N_t=12 and N_t=16 at one point). Our new results confirm completely our previous findings. We compare the results with those of the 'hotQCD' collaboration.Comment: 19 pages, 8 figures, 3 table

Touch&Type: a novel pointing device for notebook computers

The widespread use of the mouse as an input device fornotebook computers indicates that many users are reluctantto use alternative built-in pointing devices. We present anovel input method called Touch&Type which is meantto overcome some of the drawbacks encountered withconventional built-it pointing devices. Touch&Typecombines a conventional keyboard with an extended touchpad whereby the touch pads sensitive area is formed by thesurface of the keys themselves and thus can be made aslarge as the whole key area. A comparative study ofpointing operation is presented with a Touch&Typeprototype in comparison with the mouse and theconventional touch pad. While the mouse outperformed itstwo counterparts, Touch&Type was found to be superiorto the conventional touch pad (after a short learning period) with a confidence level of 73%. The study investigated pointing operation only, not taking homing time into account

Touch&amp;Type: A Novel Pointing Device for Notebook Computers

The widespread use of the mouse as an input device for notebook computers indicates that many users are reluctant to use alternative built-in pointing devices. We present a novel input method called Touch&amp;Type ™ which is meant to overcome some of the drawbacks encountered with conventional built-it pointing devices. Touch&amp;Type™ combines a conventional keyboard with an extended touch pad whereby the touch pad’s sensitive area is formed by the surface of the keys themselves and thus can be made as large as the whole key area. A comparative study of pointing operation is presented with a Touch&amp;Type™ prototype in comparison with the mouse and the conventional touch pad. While the mouse outperformed its two counterparts, Touch&amp;Type ™ was found to be superior to the conventional touch pad (after a short learning period) with a confidence level of 73%. The study investigated pointing operation only, not taking homing time into account. Author Keywords Touch&amp;Type™, notebook computer, input device, keyboard, touch pad, touch sensitive area, comparative study ACM Classification Keywords Input and interaction technologies, empirical methods, product desig

Touch&Type: a novel pointing device for notebook computers

The widespread use of the mouse as an input device fornotebook computers indicates that many users are reluctantto use alternative built-in pointing devices. We present anovel input method called Touch&Type which is meantto overcome some of the drawbacks encountered withconventional built-it pointing devices. Touch&Typecombines a conventional keyboard with an extended touchpad whereby the touch pads sensitive area is formed by thesurface of the keys themselves and thus can be made aslarge as the whole key area. A comparative study ofpointing operation is presented with a Touch&Typeprototype in comparison with the mouse and theconventional touch pad. While the mouse outperformed itstwo counterparts, Touch&Type was found to be superiorto the conventional touch pad (after a short learning period) with a confidence level of 73%. The study investigated pointing operation only, not taking homing time into account