LCLS-II helium cryoplant and cryo distribution system installation

Automation System for Curtain Wall Installation Ii ( Asci Ii )

As a trial of automation for a curtain wall which is one of heavy materials, the prototype of an ASCI(Automation System for Curtain wall Installation) was proposed and applied in real construction site. Human-robot cooperation is one of the solutions to improve ASCI. The aim of this paper is to develop a control algorithm for ASCI, which is a human-robot cooperative system, and the practical ap...

The Lcls-ii Injector Design*

The new LCLS-II project will construct a 4 GeV continuous wave (CW) superconducting linear accelerator to simultaneously feed two undulators which will cover the spectral ranges 0.2-1.2 keV and 1-5 keV, respectively. The injector must provide up to 300 pC/bunch with a normalized emittance < 0.6 m and peak current > 30 A at up to 1 MHz repetition rate. An electron gun with the required brightne...

A graphical installation system for the GNU/Linux Debian distribution

DISTORTION OF PLASMA DUE TO INSTALLATION OF AN ORIFICE IN HELIUM DISCHARGE POSITIVE COLUMN

Complicated potential structure formed at a constriction of positive column of a DC discharge with heated cathode in He at low discharge currents is investigated. According to the potential structure, electrons and ions are accelerated by the electric field and their energy distribution functions acquire multi humped shapes. Additional maximums on distribution functions quickly disappear due to...

Echo-seeding options for LCLS-II

The success of LCLS has opened up a new era of x-ray sciences. An upgrade to LCLS is currently being planned to enhance its capabilities. In this paper we study the feasibility of using the echo-enabled harmonic generation (EEHG) technique to generate narrow bandwidth soft x-ray radiation in the proposed LCLS-II soft x-ray beam line. We focus on the conceptual design, the technical implementati...