The purpose of this consultation is to upgrade an analysis chamber by photoemission spectroscopy. Four pieces of equipment will be replaced (one batch per equipment) to add a new feature to the existing ones: low-energy angle-resolved photoemission spectroscopy (Arpes) for the determination of low-temperature electronic structures on potentially small sample sizes (< 200? M)

this batch will replace the existing VSW Omicron Ea125 analyzer well suited for current high-energy angle (Xpd) studies with the following characteristics: hemisphere of average radius 125 mm, 5-channeltron detection, angled resolution with an intake cone of ±1°, large input slot of 6 x 12 mm2 also corresponding to the largest analytical surface on the sample (magnification of 1) providing good sensitivity to low intensity signals. The new arpes-optimized analyzer with point monochromatized UV source will nevertheless need to be versatile and maintain good performance in XPS and XPD using a standard laboratory X-ray source (Mg K?, Al K?) not monochromatized. For these purposes, any document or test allowing to assess in angular resolved mode, the sensitivity to small signals (whatever the level of background) of this type of analyzer compared to a conventional analyzer with channeltrons detection will be appreciated. To describe the different intake angles of photoelectrons in the analyzer we use the notations ?, ? X and ? Y defined in Annex 1

this batch will replace the existing non-monochromatic, non-microfocused Leybold-Heraeus UVS 10/35 UV lamp (current spot diameter of about 3 mm). This batch will allow the addition of ARPES functionality by improving angular and energy resolutions while providing access to the study of new materials of submillimeter size

this batch will replace the current 5-axis manipulator dedicated to homemade uncooled photoemission measurements working on a RIBER molybloc sample holder. The new 5-axis photoemission manipulator will have to keep the sample holder stage compatible with RIBER molybloc, and will integrate an additional sample holder, which can be cooled compatible with Omicron excavator (see in Appendix 2.1 the diagram of these 2 types of sample holders). This manipulator, non-standard, will therefore require a tailor-made design on the part of the candidate. To describe the 5 axes of the manipulator we use the notations x, y, z, ? and?. The X and Y directions correspond to translations in the plane perpendicular to the major axis of the manipulator, Z, positioned vertically. The x, y, and Z directions form a direct trihedron with X collinear at the axis of the photoelectron analyzer (Lot 1). ? and? correspond respectively to polar rotations about the Z axis and azimuthal, in the plane of the sample surface

The design of this photoemission chamber will be supported by the IPR in order to be compatible with Lots 1, 2 and 3 once they have been notified and with the cluster on which it will be installed on site. This batch therefore includes the manufacture, testing and delivery of this enclosure without design and without chassis