ARD All-Hands
Tor Raubenheimer
November 22nd, 2010
Outline
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LCLS-II
AED review
FACET SAREC review
Accelerator education
Budgets and program
Future opportunities
– X-band rf program
– BES Test facilities
• Questions
LCLS Upgrades
From J. Stohr
presentation to DOE
LCLS-II (Two Tunnel option)
Challenge is writing a CDR by March!
AED Review
• External review during last week of October
– Number of specific suggestions but also some general
comments:
1. Aligning the underlying lab culture with the vision for SLAC
is foundational its success. Specific mention of aligning lab
vision to reality with regard to centrally managed/field
deployed: change vision or change reality.
2. Lack of integrated approach to good engineering practices
across the lab and within Engineering.
3. Improve the formulation and execution of budgets for
resources and costs. Institute formal, monthly (quarterly)
metrics reviews where milestones, costs, resource utilization
and variances are reviewed at the division and AD levels.
FACET and SAREC Review
• FACET construction making great progress
– Beam expected next summer
• First proposals for FACET will be reviewed January 10-12
ARD Education Programs
• Strengthening education programs in Accelerator Science
and Technology
– Restarted Accelerator Physics courses on campus
– Developing new campus web pages with Applied Physics
– Improving ARD web pages for student information
Suggestions for further
improvement welcome!
Budget Status
• Budgets for FY11 are being finalized based on expected
funding
– HEP Accelerator Science is up 1M$ to support PWFA program
– HEP Accelerator Development is down 0.5M$
– ILC program is roughly flat at 10.5M$ (plus 5M$ carry-forward)
• Funded at 80% through continuing resolution
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LARP and BES Accelerator R&D are flat at ~2M$ + carry-forward
LCLS and LCLS-II support are ~4M$
LCLS Accelerator physics ~1M$
Operations funding for FACET and ESTB of 6M$ and 0.4M$
• There are some new account numbers and some old
accounts have been closed
– Please pay attention to timesheets and adjust as efforts change
Redirection within ARD
• LCLS operation support and LCLS-II programs are growing
– LCLS accelerator physics program being created
• Developing plan for next generation of BES-supported test
facilities
– High brightness injectors, seeding and beam manipulation
• ILC program will be decreasing over next few years
 Project-X, X-band R&D, and photon science programs
– Project-X is focused on CW solid-state rf sources and pulsed 1.3
GHz rf sources; X-band R&D program is still being defined
• Building FACET and ESTB – will operate 4 test facilities
• Planned participation in HL-LHC program
• Super-B effort at SLAC put on hold until clarity in the
international community
Please pay attention to timesheets and adjust as efforts change
LHC
• Great progress
– 1200 bunches now
– 75 ns looks good
• HL-LHC program
aimed at 2020
upgrades
X-band Program
• Three elements to program: research, development and
commercialization
– Strong effort in US High Gradient collaboration researching high
gradient structures and starting to research novel rf sources
– Small effort developing improved rf sources (modifying existing
klystrons and output structures)
– Starting effort in commercialization (req for 2 commercial tubes)
• X-band program has suffered greatly due to lack of ‘pull’
from community
– Very few ‘users’ of technology except in boutique cases
• Biggest impediment to adoption is lack of commercial
power sources and an operating demonstration linac
– Working with LLNL on MEGa-ray 250 MeV linac
– Exploring other options for X-band technology
Community Interest in X-band Rf Applications
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Lawrence Livermore National Lab (MEGa-ray ICS)
LANL (hard X-ray 50 keV FEL facility)
Extreme Light Infrastructure – Romania (600 MeV ICS)
Idaho Accelerator Center (60 MeV ICS)
PSI (extension of hard X-ray FEL facility)
Trieste (extension of soft x-ray FEL facility)
UK (new soft x-ray FEL)
Shanghai (new hard x-ray FEL)
KVI / University of Groningen (soft X-ray FEL)
PAL (new hard x-ray FEL)
CERN (path towards a linear collider)
NSLS-II (compact storage ring injector)
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Los Alamos MARIE
X-band Linac Driven Compact X-ray FEL
Linac-1
250 MeV
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BC1
X
Linac-2
2.5 GeV
BC2
Linac-3
6 GeV
X
X
rf
gun
LCLS-like injector
L ~ 50 m
250 pC, gex,y  0.4 mm
Undulator
L = 40 m
undulator
X-band main linac+BC2
G ~ 70 MV/m, L ~ 150 m
• Use LCLS injector beam distribution and H60
structure (a/l=0.18) after BC1
• Transverse wakes have small impact due to short
low charge bunches  tolerances of 1 mm rms
• Possible to operate in multibunch mode to feed
undulator farm  effective rep rate of few kHz
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BES Accelerator Test Facility
• BES is starting to explore options for a stronger accelerator
R&D program
– Meeting on October 6th “Discussion on the Integration of Accelerator
Physics R&D and Operations”
– Output of workshop: should integrate R&D into operating facilities
and community should develop a plan for dedicated test facilities
– Been using LCLS to further R&D concepts: slotted foil, THz, selfseeding
– Developed multi-facetted plan towards a high brightness injector
• Possible opportunity for more rapid development or largerscale program
– Bob Hettel in charge of developing SLAC proposal for BES Test
Facility(s)
High Brightness Injector Program
Three Parallel Experimental Efforts
Cathode Test Facility
LCLS-II Injector
ASTA Facility
Incremental upgrade of
Photocathode R&D aimed at LCLS-I with opportunity
understanding LCLS lifetime
for R&D during
and damage issues
commissioning
Test rf gun modifications before
installation in LCLS-I or II
Longer term R&D aimed
at high brightness cathodes
with lower thermal e
(coatings, smoothness,
new materials)
Construction in ~2014
and commissioning
in ~2015
Injector R&D Program
NLCTA Facility
Simulation and experimental
program aimed at significant
improvement in brightness
1) Design studies on rf
gun design, CSR microbunching and cathodes
2) Rf gun development and
testing at NLCTA in 2012
3) NLCTA R&D on injector
beam physics
May be additional opportunity for larger-scale program
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Rf Gun Development with LLNL
• X-band rf gun has potential to enable compact linacs
– Compact single-frequency linac compared with lower rf frequency
– Higher brightness with ~ 3x higher peak currents for similar e
– Lower emittance at low charge (@thermal emittance dominated)
• Constructing XTA in NLCTA and rf gun in collaboration
with LLNL
Rf gun detail
Rf gun test beam line
Accelerator R&D at End Station B
• 100 MeV linac with variety of power sources, laser systems
and flexible beam line
Evolve NLCTA into Injector
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Direct laser acceleration
Test Facility on ~ 2016
timescale  LCLS-III
Echo-7 seeding experiment
Microwave rf gun and structure testing
Shared between HEP and BES programs
Class 10,000 Clean room
Flexible UV and IR laser
Chicane -1
20 feet
Echo-7 Beam line
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Happy Thanksgiving!