1. Welcome
Tom Himel
April 25, 2012

2. SLAC National Accelerator Laboratory
Sand Hill Road
You are here!
SLAC Linac
Cover Slide
SLAC is a U.S. DOE-funded, National Laboratory operated by Stanford University for Office of Science
Dedicated to fundamental research, no classified work
The Laboratory was founded in 1962 on 426 acres of Stanford University land that is leased to the Federal Government
Original mission to perform basic research accelerator-based particle physics.
The Laboratory program has since broadened to include photon science, particle astrophysics and cosmology.
SLAC as an administrative unit does not matriculate students we do have a ~50 faculty in two separate departments
SLAC faculty supervise graduate students and postdocs
Today I want to tell you a bit about the lab, our science and our future.
Fwy 280
Persis S. Drell
Director April 11, 2011

3. SLAC HEP Focus Moves to Particle Astrophysics
Fermi Gamma Ray Space Telescope
Joint DOE/NASA project
Launched summer 2008 and providing most detailed look of the gamma ray Universe
Large Synoptic Survey Telescope
Highest priority ground based project in 2010 Decadal Survey
Joint DOE/NSF project
First light 2020(?)

4. The Reinvention of SLAC
SLAC Accelerators making X-Rays
SLAC Accelerators for Particle Physics

5. The New Frontier: Atomic Resolution in Space and Time
X-ray ‘camera’ with shutter speed of sec (10fs) allows us to:
See atoms and electrons moving on their natural timescale
Watch a chemical reaction atom by atom
Frontier opened in 2009 with ‘ultra-bright’, ‘ultra fast’ x-ray pulses from LCLS here at SLAC
The future of photon science will be driven by our desire to observe and manipulate the ultrafast timescales of valence electron motion (fs-as), the spatial scale of atoms (nm), and the energy scale of the weak interactions that hold electrons in correlated motion with near neighbors (meV).
Goals are to
really understand the dynamics of electrons during transitions caused by perturbations
novels material design
be able to follow the energy flow in light and heat induced catalysis and chemistry at surfaces and interfaces
to probe electronic structure of “complex materials” on the nanoscale with the goal of understanding the weak correlated interactions between charges and spins
to do biological imaging of the complex molecular machines that are central to life, and understand their higher level organization and control.
We have two facilities at SLAC that are focused on photon science and providing the tools to attack this science

6. What Could We Do With An ‘Ultra-Fast, Ultra-Bright’ X-ray Source?
Make movies of chemistry in action
Unlock secrets of photosynthesis and catalysis
Study the structure and time-resolved function of single molecules e.g. proteins
Drug discovery
Do 3D imaging and dynamical studies of the bio-world
Understanding of cell function
Solve the (transient) structure of water and other liquids
Understand this most common and important liquid
Characterize the transient states of matter created by radiation, pressure, fields, etc
Control behaviors in extreme environments where new materials can be created

7. Inside View: LCLS Undulator Tunnel
Lasing ‘campaign’ started at 7PM on 4/10/09
By 10PM, the world’s first x-ray free electron laser was lasing at 1.5 Angstroms!
First experiments started 10/1/09

8. LCLS-II: New Injector, Accelerator, & Bypass
(Slide souced from P. Emma presentation)
enclosure exists at sector 10
GeV e- bypass line
GeV
new undulators
L3 X RF
gun-2
L1
L2
BC1
BC2
L0
Sector-20 wall RF
gun-1 L0
undulator X L1
BC1 L2
BC2 L3
GeV
existing LCLS
sector-10
sector-14
sector-20
sector-24
sector-30
und-hall
Use 2nd km of SLAC linac (sector 10 to 20) – greater flexibility
3-14 GeV energy at 120-Hz beam rate; or 3-7 GeV energy (no SLED) (allows 360-Hz beam rate – not in project)
Preserves possibility of up to 28 GeV (and still 1 more km left!)

13. Recent or planned major EPICS developments
Fast feedback – 120 Hz multi-IOC, Ethernet links
Archiver – Need million channels, want to reduce care and feeding (e.g. making new index files and manually setting up many engines)
PV gateway – Waveforms slow it down. Making new multi-threaded version
MPS – 1 pulse response at 120 Hz
Linac upgrade – moved LCLS linac control from Alpha/SLCnet/multibus micro/CAMAC to EPICS/ethernet/IOC/CAMAC.
microTCA BPM and LLRF
Includes linux with RT patch as IOC OS