Record Details

Title:
A Modular Design For the Differential Pumping Modules at the European XFEL Photon Beamlines
Affiliation(s):
EuXFEL staff
Author group:
Vacuum
X-Ray Optics
Topic:
Scientific area:
Abstract:
Several kinds of gas-based diagnostics devices are developed by the X-ray diagnostics group (WP74) and placed in the beam transport system. These are in particular: Gas-based photo-emission spectrometers (PES) for spectral analysis. Gas-based beam intensity monitors (XGMD’s). Gas-based beam position monitors (XBPM’s). Depending on different requirements, these devices can operate with different gases (Xe, Ne, Ar, Kr and even N2), running within a pressure range that varies typically from 1·10-6 mbar up to 5·10-4 mbar (Currently R&D activities in WP74 are ongoing that explore the usable parameter space of these devices.) Since a windowless system is highly desirable, a differential pumping scheme is mandatory to provide the required drop in pressure down to the average beamline values (< 9·10-8 mbar). This system should be able to minimize as much as possible the flow of the above mentioned noble gases to the rest of the X-Ray beam transport system, and being able at the same time to maximize the optical clear aperture between pumping stages. This document introduces a general overview about the design process and test procedures developed so far as part of the R&D activities of the WP-73 (X-Ray Optics & Beam Transport) Group.
Imprint:
2014
Language(s):
English
Conference information:
European XFEL Users’ Meeting, Hamburg, Germany, 2014-01-29, 2014-01-31


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 Record created 2018-10-30, last modified 2019-01-30

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