XPP

Linac Coherent Light Source

An Office of Science User Facility

Quick Launch

All Site Content

X-ray Pump Probe (XPP)

This site is OBSOLETE as of 30 Oct. 2017
Please go to the new XPP site

XPP Home

The XPP instrument

At the X-ray pump-probe (XPP) instrument predominantly uses ultrashort optical laser pulses to generate transient states of matter which are subsequently probed by hard X-ray pulses from the LCLS. The X-ray pulses help to reveal structural dynamics initiated by the laser excitation at the timescale of atomic motions in solid, liquid and gaseous specimens.

The instrument design emphasizes versatility. To maximize the range of phenomena that can be excited and studied, the laser pulse energy, frequency, and temporal profile can be matched to the scientific problem. X-ray absorption and emission spectroscopy, diffraction and scattering are typical tools for probing the laser-induced structural changes. These experiments require the union of four experimental capacities: the generation and delivery of X-ray and laser pulses to the sample, the preparation of the excited state in the sample, and the detection of the X-ray signal.

For more information about the instrument see here:

Chollet et al. The X-ray Pump-Probe instrument at the Linac Coherent Light Source. J. Synchrotron Rad. (2015), 22, 503-507

XPP Location

Near Experimental Hall (NEH), Hutch 3 » map

XPP is located in the Near Experimental Hall, hutch 3.

XPP, Near Experimental Hall, Hutch 3

XPP Contact Information

Name:	Diling Zhu
Title:	Scientist
Phone:	(650) 926-2913
Email:	dlzhu@slac.stanford.edu

Name:	Roberto Alonso-Mori
Title:	Scientist
Phone:	(650) 926-4179
Email:	robertoa@slac.stanford.edu

Name:	Matthieu Chollet
Title:	Scientist
Phone:	(650) 926-2458
Email:	mchollet@slac.stanford.edu

Name:	Takahiro Sato
Title:	Scientist
Phone:	(650) 926-3749
Email:	takahiro@slac.stanford.edu

Name:	Sanghoon Soog
Title:	Scientist
Phone:	(650) 926-2255
Email:	sanghoon@slac.stanford.edu

Name:	Daniel Stefanescu
Title:	XPP Area Manager
Phone:	(650)926-3662
Email:	daniel@slac.stanford.edu

Name:	Sebastien Boutet
Title:	Department Head
Phone:	(650)926-8676
Email:	sboutet@slac.stanford.edu

XPP Control Room:	(650) 926-1703

XPP Hutch:	(650) 926-7963

XPP Animation (More videos)

XPP Image Gallery (More images)

SLAC National Accelerator Laboratory, Menlo Park, CA
Operated by Stanford University for the U.S. Dept. of Energy

XPP