Welcome

Tom Himel

April 25, 2012

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SLAC National Accelerator Laboratory

Persis S. Drell

Director

April 11, 2011

Sand Hill Road

Fwy 280

You are here!

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(?)

The Reinvention of SLAC

SLAC Accelerators for Particle Physics SLAC Accelerators making X-Rays

The New Frontier: Atomic Resolution in Space

and Time • X-ray ‘camera’ with

shutter speed of 0.00000000000001 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

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

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

X

undulator L1 L2 L3 BC1 BC2

RF gun-1

L0

3.5-14 GeV

sector-10 sector-20 sector-24 sector-14

existing LCLS

enclosure exists

at sector 10

und-hall sector-30

L3 X

RF gun-2

L1 L2 BC1 BC2

L0

Sector-20 wall

3.5-14 GeV e- bypass line

3.5-14 GeV

new undulators

LCLS-II: New Injector, Accelerator, & Bypass (Slide souced from P. Emma presentation)

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!)

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

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