| 1. |
- Almehed, Sverker, et al.
(författare)
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A Silicon-Tungsten Electromagnetic Calorimeter for LEP
- 1991
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 305:2, s. 320-330
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Tidskriftsartikel (refereegranskat)abstract
- This report describes a silicon-tungsten electromagnetic calorimeter used to determine some beam properties and luminosity in the DELPHI experiment at LEP. The polar angular range covered by this detector is 5–8 mrad, which allows the detection of a Bhabha rate about 10 times the rate of produced Z particles at the peak cross section.
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| 2. |
- Andersson, Åke, et al.
(författare)
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The MAX II synchrotron radiation storage ring
- 1994
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 343:2-3, s. 644-649
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Tidskriftsartikel (refereegranskat)abstract
- A 1.5 GeV third generation storage ring optimised for the VUV and soft X-ray spectral region is currently being built at MAX-lab. The magnet lattice, ring architecture and production choices are optimised to fit within rather tight boundary conditions without sacrificing performance. In this paper, the magnet lattice, light characteristics, injection and technical solutions for the ring are presented.
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| 3. |
- Da Via, C, et al.
(författare)
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Lightwave Analogue Links For LHC Detector Front-ends
- 1994
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 344:1, s. 199-211
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Tidskriftsartikel (refereegranskat)abstract
- The requirements on optical links for transferring analog and digital signals from the detector front-ends to the readout electronics at future high-luminosity colliders are reviewed. The advantages of external modulation techniques are discussed. An outline is given of the the R&D programme recently started at CERN by a collaboration involving high-energy physics institutes, optoelectronics research laboratories and industry, in order to develop electro-optic intensity modulator arrays, particularly for analogue applications, and to investigate the feasibility of volume production. The design of multichannel demonstrators in lithium niobate and III-V semiconductor technology is described. Preliminary results of the performance measurements are presented.
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| 4. |
- Hedin, Lars
(författare)
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Properties of electron self-energies and their role in electron spectroscopies
- 1991
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; A308:1-2, s. 169-177
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Tidskriftsartikel (refereegranskat)abstract
- The GW approximation for the self-energy connected with the one-electron Green's function has been very successful in predicting band structures for a large class of semiconductors and insulators. The physical basis for this approximation and general features of its nonlocality are discussed, as well as possible improvements. Besides quasiparticle energies the self-energy also gives the intrinsic part of the photoelectron spectrum. In general, however, a full description of experimental spectra measured with synchrotron radiation, such as photoemission, Auger spectra and EXAFS, cannot be given by the one-electron Green's function. A new theoretical approach to synchrotron radiation spectroscopies is given in terms of the coupling functions involved in the GW approximation and on-the-energy-shell one-electron Green's functions.(14 refs)
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| 5. |
- Werin, Sverker, et al.
(författare)
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First results in coherent harmonic generation using the undulator at the MAX-lab electron storage ring
- 1990
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - 0167-5087. ; 290:2-3, s. 589-596
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Tidskriftsartikel (refereegranskat)abstract
- An experiment in coherent harmonic generation has been performed at the MAX-lab electron storage ring in Lund. Coherent photons were produced in the third harmonic of a Nd:YAG laser focused on the electron beam in a permanent magnet undulator. The number of coherent photons, the linewidth, the current dependence and other parameters have been measured.
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| 6. |
- Werin, Sverker, et al.
(författare)
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Harmonic-generation At the Max-lab Undulator - Report of the 1st Results
- 1991
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - 0167-5087. ; 304:1-3, s. 81-85
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Tidskriftsartikel (refereegranskat)abstract
- By the use of coherent harmonic generation photons in the third harmonic of a Nd:YAG laser have been produced. The laser illuminated the electrons inside the permanent magnet undulator at Max-lab, Lund. The generation proved to be stable and the number of emitted photons, the linewidth and the current dependence were measured.
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