1. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. THE CSU ACCELERATOR LABORATORY Stephen Milton 1

2. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Collaborators/Team Colorado State University Sandra Biedron Chris Brown (Post-doc) Theodore Burleson (Grad. Stu.) Cristian Caricco (Undergrad. Stu.) Alex D’Audney (Undergrad. Stu.) Jonathan Edelen (Grad. Stu.) Chris Hall (Grad. Stu.) John Harris Karen Horovitz (Grad. Stu.) Carmen Menoni Stephen Milton Auralee Morin (Grad. Stu.) Lauren Rand (Grad. Stu.) Jorge Rocca Nihan Sipahi (Grad. Stu.) Taylan Sipahi (Grad. Stu.) Colorado State University Sandra Biedron Chris Brown (Post-doc) Theodore Burleson (Grad. Stu.) Cristian Caricco (Undergrad. Stu.) Alex D’Audney (Undergrad. Stu.) Jonathan Edelen (Grad. Stu.) Chris Hall (Grad. Stu.) John Harris Karen Horovitz (Grad. Stu.) Carmen Menoni Stephen Milton Auralee Morin (Grad. Stu.) Lauren Rand (Grad. Stu.) Jorge Rocca Nihan Sipahi (Grad. Stu.) Taylan Sipahi (Grad. Stu.) 2 University of Twente and CSU Peter van der Slot University of Twente and CSU Peter van der Slot ENEA, Frascati and CSU Luca Giannessi ENEA, Frascati and CSU Luca Giannessi Australian Synchrotron Evelyne Meier Australian Synchrotron Evelyne Meier LANL Bruce Carlsten and Sheila Brandt LANL Bruce Carlsten and Sheila Brandt JLAB Dave Douglas, Steve Benson, Chris Tennant, Shukui Zhang, Pavel Evtushenko JLAB Dave Douglas, Steve Benson, Chris Tennant, Shukui Zhang, Pavel Evtushenko Argonne John Noonan and Matt Virgo Argonne John Noonan and Matt Virgo SLAC Tor Robinheimer and Chris Aldophsen SLAC Tor Robinheimer and Chris Aldophsen Additional Interns Alysia Dong (SU 12) Hannah Yehudah (SU 12), Nabeel Moin (just started) Additional Interns Alysia Dong (SU 12) Hannah Yehudah (SU 12), Nabeel Moin (just started)

3. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. “Recent” Interest “From Above”, i.e. DOE Report based on 6 working groups Energy and the Environment Security and Defense Discovery Science Medicine Industry Accelerator Science and Education New Report to Congress Response to A4AF report Delivery to Congress expected early summer 2012

4. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Major “Take Away” from the A4AF Report One key Finding Make more compact, efficient, and lower cost accelerators Document Statistics Number of pages: 100 including all cover pages etc. Word usage Cost: Used 59 times Compact: Used 40 times Efficient: Used 52 times 4

5. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. The CSU Accelerator Laboratory Concept Create a “Best-in-Class” research facility/training center for accelerator beam science, engineering, and technology Capitalize on the following desires/trends Small Efficient Cost effective Train the next generation of accelerator scientists, engineers, and technologists Perform world-class research in beam physics An operational accelerator research and training facility will attract world-class employees, collaborators, and users to CSU. 5

6. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. CSU Accelerator Laboratory 6 Donated by the Univ. of Twente Donated by the Boeing Corp.

7. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Linac Performance Parameters 7 Linac Characteristics Energy6 MeV Number of Cells5 ½ RF Frequency1.3 GHz Shunt Impedance 50 M  /m Q-Value18,000 Axial Electric Field Cell no. 126 MV/m Cell No. 214.4 MV/m Cell No. 3 – 610.6 MV/m Solenoid Field Strength1,200 G

8. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. System Performance Parameters 8 Major System Parameters Linac Frequency1.3 GHz Repetition Rate10 Hz Mircopulse Rep. Rate81.25 MHz (max.) Klystron TypeTH 2022C (Thales) Power20 MW Modulator TypePFN Pulse Duration 15  sec Undulator TypeHybrid: NdFeB K1 (at 8 mm gap) Period25 mm Periods50

9. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Cathode Preparation Chamber A Variety of Cathodes Can be Used Cathode preparation chamber Used in the past CeK 2 Sb, K 3 Sb, and Copper The choice is dependent on what the experiment demanded A Variety of Cathodes Can be Used Cathode preparation chamber Used in the past CeK 2 Sb, K 3 Sb, and Copper The choice is dependent on what the experiment demanded 9

10. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Current Status of Linac System Late October System Fully Crated and Placed on Pallets for Shipping 14 and 15 November Crates and pallets loaded into one Hi-Cube 40’ container and one normal 20’ Container Late December 2012 to Early January 2013 Expect shipment to arrive at CSU 10

11. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Immediate Plans for the Linac System January Through July 2013 Begin assembly and system checkouts in a temporary location A building located adjacent to the ABL Systems Modulator Low Level RF System High Power RF Rack Controls Vacuum Power Supplies … Want to make certain that we discover any issues right away that might involve long lead items Would like to be at the point of putting power to the cavity by July 2013 11

12. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Past Performance of Linac System As Achieved at the University of Twente 12 Ph.D. Thesis Univ. of Twente

13. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Drive Laser System Coherent Ti:Sa System Micra Oscillator Pulse Selector Synchro Lock System Elite Duo USP Regen Amp. With Addition Single Pass Amp Power by 2 diode pumped Coherent Evolution Nd:YLF lasers UV pulse stretcher with doubling and tripling crystals Will not be used in its present configuration 13 Basic Laser System Performance Micra Oscillator Avg. Power> 300 mW Rep. Rate81.25 MHz Pulse width< 15 fs with ext. comp. Legend Elite Duo Amplifier Avg. Power (at 800 nm)> 10 W Avg. Power (at 256 nm)> 1 W Pulse Duration40 fs (FWHM)

14. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Drive Laser Current Status Currently Installed in a Laboratory at the Engineering Research Center Coherent rep to arrive the week of December 3 rd to do system checkout and training 14

15. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Drive Laser Modes of Operation Modes of Operation Single high intensity pulse at 1 Hz to 1000 Hz Low QE photocathodes Diagnostics such as Electro-Optical Sampling Other Current configuration 81.25 MHz x 10 usec Macropulse train at 10 Hz Used to drive high QE cathode for FEL oscillator configuration Requires modifications to existing system 15

16. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. 1 st Experiment: THz Free-Electron Laser Tunable between 200-800 microns About 1 MW peak power from 900 MW available peak beam power (6 MeV, 150 A peak current) Average: a few mW (81.25 MHz rep rate, 15 microsecond macropulse,25-ps micropulse) Tunable between 200-800 microns About 1 MW peak power from 900 MW available peak beam power (6 MeV, 150 A peak current) Average: a few mW (81.25 MHz rep rate, 15 microsecond macropulse,25-ps micropulse) 16 Courtesy Univ. of Twente

17. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Cartoon of Original Set up 17 Courtesy Univ. of Twente

18. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Drive Laser Operation For THz FEL Requires 81.25 MHz, 10 usec burst at 10 Hz 18 Ph.D. Thesis Univ. of Twente

19. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FEL Operation 19 Courtesy Univ. of Twente

20. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Diagnostics Development Electro Optical Sampling System System intended for tests at JLab FEL If JLab not ready then we will test it at CSU Beam energy resolution limited At 6 MeV the resolution of the device will be greatly limited due to the 1/  opening angle We will make up for that by tightly focusing and placing the crystal very close to the beam Electro Optical Sampling System System intended for tests at JLab FEL If JLab not ready then we will test it at CSU Beam energy resolution limited At 6 MeV the resolution of the device will be greatly limited due to the 1/  opening angle We will make up for that by tightly focusing and placing the crystal very close to the beam 20

21. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. The Advanced Beam Laboratory CSU Board of Governors approved construction and expenditure of the money needed to build of the new building. CSU President has chosen to move forward with the construction and has developed a funding plan. 21

22. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. The Advanced Beam Laboratory Purpose Built Two Primary Thrust Area Lasers Accelerators Synergistic Opportunities 22

23. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. ABL: CSU Accelerator Laboratory 23

24. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. ABL Timeline Accelerated Delivery Made possible by an existing construction contract to build what is called Engineering II. We are using the same Architect and General Contractor Timeline (Abbreviated) 12 November 2012 – Fence off construction yard 19 November 2012 – Begin site preparation work Mid January 2013 – Walls go up 31 July 2013 – Building ready for move in 24

25. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. In Addition to the ABL AECOM Building Adjacent to ABL Will be vacated in 2014 This space will be provided to the member groups of the ABL Will be re-purposed for our use 25 Basement1 st Floor 2 nd Floor

26. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Summary The CSU Accelerator Laboratory 6 MeV photocathode linac system with state-of-the-art drive laser Capable of delivering pulse trains at 81.25 MHz over 10 microseconds Will be used for Basic beam research and diagnostic development Training Small, relatively high average power THz FEL Other, as yet undisclosed, research projects Purpose-Built Building Ready for move in 31 July 2012 26