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Table of contents

Sarrao, Z. Fisk, C. Petrovic, M. Eskildsen, Science , Movshovich, N. Oeschler, P. Steglich, J. Thompson, P.

NEA - Publication

Pagliuso, and J. The most surprising observation was, however, that the scattering intensity of the vortex lattice increases with the field Fig.

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Proof of such a signal at low-energies would be the decay of a muon into a positron and photon — the search for this decay being the goal of MEG. One early highlight was. Figure 2 Right shows the calorimeter on the detector platform after liquefaction of the Xenon gas at Kelvin, yielding some litres of liquid Xenon inside the vessel.

Previous Seminars & Lectures

With a suitable selection from a NaI detector, mono-energetic photons of 55, 83 and MeV could be. The initial phase involved beam. The experimental search for the Higgs boson and super symmetric particles will be a major task for which the pixel device will play a vital role in detecting picosecond long-lived particles that are crucial in the search for new fundamental laws of physics. The barrel part of this detector was developed at PSI and entered its final construction phase in It is roughly 56 cm long, weighs about 5.

Each layer is tiled together with pixel modules as shown.

From Experienced Experimenter to Industrial Designer

For the complete construction of the three barrel layers a total of modules were built and thoroughly tested. This implied thermal cycling from room temperature to the final operating temperature of. Figure 2: A pixel module is mounted onto the carbon fibre mechanics with integrated cooling by use of tiny swiss watch screws. For the three-layer barrel this results in about 15 Giga transistors that need to work flawlessly for data collection that is expected to start in The micro-bump-bonding connection of the pixel sensor elements to the corresponding pixel signal.

They were fabricated following special processing steps at the wafer level in the Laboratory for Micro- and Nanotechnology The actual merging between sensor and ROCs is carried out by a very precise chip placement machine developed at PSI and that has since been transferred to industry for commercialisation. Detector assembly The challenging task of assembling the pixel modules in complete detector shells proceeded rather smoothly and is now complete.

The pixel modules are fixed onto the carbon fibre structure with tiny screws from the Swiss watch industry. After thorough testing at PSI the pixel detector will be shipped. Schumann, S. Horn, S. Dillmann, C. Domingo Pardo, F. Marganiec, F. Voss, S. Walter, Forschungszentrum Karlsruhe, more than a factor of two, clearly obscuring the abun-.

Heil, R. Germany; more than a factor of two, clearly abunthan a factor of two, clearly obscuring the abunJ. Goerres, E. Uberseder, M. The for such an experiExperimental solutions to this problem are are therefore Experimental solutions to this problem aa nuclear connection nuclear connection ment is the availability of a sufficient amount oftherefore Fe as TheThe precondition for such an experiurgently needed.

One of the very fewsuch possibilities for.

Atomic and Optical Physics I : Resonance - MITx on edX - Course About Video

Oneat of veryvery few possibilities for for sample material. One of the few possibilities erator waste from PSI facilities. Dillmann, Pardo, F. Forschungszentrum Neuhausen LaboD. Target preparation I. Walter Forschungszentrum Marganiec, F. Walter Forschungszentrum M. Wiescher University of Introduction Target drilled out preparation from a beam dump irradiated with high-energy M. Reifarth Darmstadt, Planckstr.

Uberseder, 6 60 J. Wiescher University of J. Goerres, M. Wiescher University of 60 The isotope Fe, with a half-life of 1. Besides the desired iron isotope, the the protons used. Ti asawere the main contaminants, which would have im- were 60 Current attempts to reconstruct the inventory of short-lived used.

Besides thealso desired iron isotope, sample contained sample contained also about MBq sample contained about MBq Co60the and 2 Co and 2 MBq peded the envisaged neutron activation of 60 FeMBq leading. In Abstract 10 61 activation Be must be considered a16late addition to the protosolar of 60these Fe leading to 61Fe. Therefore, these impurities to Fe. Therefore, impurities had to be to Therefore, these impurities had to carefully be carefully A target containing 1.

Whether this material stems from a supernova or a had to be carefully reduced to a near zero level prior toInmeasreduced to atonear zerozero levellevel priorprior to of measurement. In addition to the isotope under investigation, the 60 16 60 under addition to the isotope investigation, theofthe sample addition toalong the isotope investigation, sample atoms of Fe60was prepared A target containing atoms of Fe prepared Awas target containing withunder Fe, as well as traces stable iron deployed at1. Fe, which govern stellar from the drilling process. Co and for 60 for for activity of nuclide Co, increased The content ofdaughter Fe was determined by measuring the activity 60 60 The content of Fe was determined by measuring the 2.

Current to of reconstruct the inventory of 2,January Current attempts todetermined reconstruct inventory ofstellar ESS.


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Current attempts toshow reconstruct inventory of2, The isotope Fe,cross with sections a half-lifeinofthe 1. Whether this this matelate addition to star the protosolar nebula.

Whether matebranch AGB is still an open question. Taking theTaking chemical into account, branch starThe is still an question. The stellar n, J O O the the decay constants of where decay constants of where 60 16 60 60 O 60 and and 60 O 60 are are 16 HCl availability of a sufficient amount of Fe as sample material. Taking the the chemical yieldyield Fe and respectively. Taking 60 J ingOne the s-process ofand ing production of Fe.

The The stellar Fe.