ARD All-Hands Tor Raubenheimer November 22 nd, 2010

Outline 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 –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 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) 12

Los Alamos MARIE

Linac MeV Linac GeV Linac-3 6 GeV BC1BC2 Undulator L = 40 m S rf gun X undulator LCLS-like injector L ~ 50 m 250 pC,  x,y  0.4  m X X X-band main linac+BC2 G ~ 70 MV/m, L ~ 150 m Use LCLS injector beam distribution and H60 structure (a/ =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 X-band Linac Driven Compact X-ray FEL 14

BES Accelerator Test Facility BES is starting to explore options for a stronger accelerator R&D program –Meeting on October 6 th “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, self- seeding –Developed multi-facetted plan towards a high brightness injector Possible opportunity for more rapid development or larger- scale 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 ASTA Facility Photocathode R&D aimed at understanding LCLS lifetime and damage issues Test rf gun modifications before installation in LCLS-I or II Longer term R&D aimed at high brightness cathodes with lower thermal  (coatings, smoothness, new materials) LCLS-II Injector Incremental upgrade of LCLS-I with opportunity for R&D during commissioning Injector R&D Program NLCTA Facility Simulation and experimental program aimed at significant improvement in brightness 1)Design studies on rf gun design, CSR micro- bunching and cathodes 2)Rf gun development and testing at NLCTA in )NLCTA R&D on injector beam physics Construction in ~2014 and commissioning in ~ May be additional opportunity for larger-scale program

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  –Lower emittance at low charge emittance dominated) Constructing XTA in NLCTA and rf gun in collaboration with LLNL Rf gun detail Rf gun test beam line

100 MeV linac with variety of power sources, laser systems and flexible beam line –Direct laser acceleration –Echo-7 seeding experiment –Microwave rf gun and structure testing –Shared between HEP and BES programs Accelerator R&D at End Station B Class 10,000 Clean room 20 feet Chicane -1 Echo-7 Beam line Evolve NLCTA into Injector Test Facility on ~ 2016 timescale  LCLS-III Flexible UV and IR laser 18

Happy Thanksgiving!