SLAC Report 611 Diffraction studies of stimulated dynamics

SLAC Report 611 Diffraction studies of stimulated dynamics (pump-probe) t= Coherent-scattering studies of nanoscale fluctuations t=0 Atomic, molecular and optical science Aluminum plasma classical plasma High energy density science G =10 Program developed by international team of scientists working with accelerator and laser physics communities “the beginning. . not the end” dense plasma G =100 high density matter 10 - 4 10 -2 1 10 2 Density (g/cm-3) 10 4 Nano-particle and single molecule (non-periodic) imaging

LUSI Scope • Build instruments for hard x-rays that address 3 Thrust Areas: – X-ray pump-probe – XPCS – Coherent x-ray imaging • Include one additional instrument, to address the soft-xray portions of pump-probe and coherent imaging Thrust Areas • Detector development

LUSI and LCLS Science Near Experimental Hall (NEH) and Hutches (H 1, H 2, H 3) • Soft x-ray pick-off mirror in the FEE will provide a soft x-ray beamline for H 1 (and possibly H 2), allowing efficient switching between experiments • Mirror system at end of NEH will provide for x-ray beam deflection to 3 hutches in FEH H 1 AMO, other soft x-ray and diagnostics X-ray pump probe H 2 H 3

A soft x-ray pick-off mirror in the FEE will provide a ‘soft x -ray beamline’ for Hutch 1 (and maybe Hutch 2), allowing easy switching between experiments

LUSI and LCLS Science Far Experimental Hall (FEH) and Hutches H 4, H 5, H 6 H 4 H 5 XPCS Coherent X-ray Imaging H 6 HEDS

FEH XPCS Coherent x-ray imaging High energy density science

2 -d Detector Development • LCLS experiments need new detector technology • Established LCLS Detector Advisory Committee to evaluate technology choices and monitor development – Next meeting Feb 9 -10, 2006 • Dual development strategy for fast 2 -d detectors for ‘hard’ x -rays – Several technologies look promising, no clear leader – LCLS will pursue one strategy: Pixel Array Detector • Initial development has begun – LUSI will try a different technology: Silicon Active Matrix • Mo. U and technical addendum in place as of mid-April – Both prototypes should be ready by 2009 • Continue to look at available commercial technologies • Need 2 -d detectors for soft x-rays

Streak Camera Development • LCLS experiments can benefit from improvements of x-ray streak cameras. • The streak camera can be a real aid in commissioning the x -ray split/delay, real time measurement of time delay in pump-probe • LCLS is responsible for initiating this development, LUSI is considering the cost/schedule-science of assuming the streak camera development project.

SAC recommendations for Soft X-rays • ‘Proceed’ with soft x-ray imaging of magnetic materials • Soft x-ray pump probe – strengthen science case • Soft x-ray RIXS – requires a ‘mature’ LCLS for this exciting science

Response to SAC recommendations for Soft X-rays Original SAC review of LOIs: All LOIs can be ‘accommodated’ In one of five thrust areas. • ‘Proceed’ with soft x-ray imaging of magnetic materials – Incorporate into imaging team: added Jan Lüning as co-leader • Soft x-ray pump probe – strengthen science case – Incorporate into pump-probe: added Anders Nilsson as a co-team leader. • Soft x-ray RIXS – requires a ‘mature’ LCLS for this exciting science

LUSI and LCLS Science LCLS – the Initial Scientific Teams and Thrusts team leader co-team leader(s) • AMO science Lou Dimauro t= • Coherent scattering of t=0 nanoscale fluctuations Brian Stephenson Karl Ludwig Gerhard Grübel • Diffraction studies of Kelly Gaffney stimulated dynamics (pump-probe) • Nano-particle and single Janos Hajdu molecule (non-periodic) imaging Nora Berrah David Reis Jörgen Larsson T. Tschentscher Anders Nilsson Henry Chapman John Miao Jan Lüning Aluminum plasma classical plasma G =10 dense plasma G =100 high density matter 10 - 4 10 -2 1 10 2 Density (g/cm-3) 10 4 • High energy density science Dick Lee Phil Heimann

Meetings with teams • • Imaging Pump-probe XPCS Soft x-ray March 9, 2006 April 4, 2006 April 17, 2006 April 21, 2006

Jerry Hastings LCLS Science Teams LUSI Project Director Nadine Kurita Chief Engineer William Foyt Engineering Development N. Kurita Group Leader Engineer Hired Designer Designer LUSI Project manager Instrument Scientists Administration William Foyt Group Leader Admin support ES&H PMCS Computer support Offer extended Req. open Candidate indent. Matrixed J. Hastings Group Leader Pump-Probe XPCS Coherent imaging Soft X-ray Optics Group Grating Crystal

LUSI Budget: Actual/projected