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The CSU accelerator Laboratory

The CSU accelerator Laboratory. Stephen Milton. SLAC Tor Robinheimer and Chris Aldophsen. Collaborators/Team. Australian Synchrotron Evelyne Meier. Colorado State University Sandra Biedron Chris Brown (Post-doc) Theodore Burleson (Grad. Stu.) Cristian Caricco (Undergrad. Stu.)

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The CSU accelerator Laboratory

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  1. The CSU accelerator Laboratory Stephen Milton

  2. SLAC • Tor Robinheimer and Chris Aldophsen Collaborators/Team • Australian Synchrotron • Evelyne Meier • Colorado State University • Sandra Biedron • Chris Brown (Post-doc) • Theodore Burleson (Grad. Stu.) • CristianCaricco (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 • NihanSipahi (Grad. Stu.) • TaylanSipahi (Grad. Stu.) • ENEA, Frascati and CSU • Luca Giannessi • Argonne • John Noonan and Matt Virgo • University of Twente and CSU • Peter van der Slot • LANL • Bruce Carlsten and Sheila Brandt • JLAB • Dave Douglas, Steve Benson, Chris Tennant, Shukui Zhang, Pavel Evtushenko • Additional Interns • Alysia Dong (SU 12) Hannah Yehudah (SU 12), NabeelMoin (just started)

  3. “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. 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

  5. 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.

  6. CSU Accelerator Laboratory Donated by the Univ. of Twente Donated by the Boeing Corp.

  7. Linac Performance Parameters

  8. System Performance Parameters

  9. Cathode Preparation Chamber • A Variety of Cathodes Can be Used • Cathode preparation chamber • Used in the past • CeK2Sb, K3Sb, and Copper • The choice is dependent on what the experiment demanded

  10. 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

  11. 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

  12. Past Performance of Linac System • As Achieved at the University of Twente Ph.D. Thesis Univ. of Twente

  13. Drive Laser System • CoherentTi: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

  14. Drive Laser Current Status • Currently Installed in a Laboratory at the Engineering Research Center • Coherent rep to arrive the week of December 3rd to do system checkout and training

  15. 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 usecMacropulse train at 10 Hz • Used to drive high QE cathode for FEL oscillator configuration • Requires modifications to existing system

  16. 1st Experiment: THz Free-Electron Laser • Tunable between 200-800 microns • About 1MW 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) Courtesy Univ. of Twente

  17. Cartoon of Original Set up Courtesy Univ. of Twente

  18. Drive Laser Operation For THz FEL • Requires 81.25 MHz, 10 usec burst at 10 Hz Ph.D. Thesis Univ. of Twente

  19. FEL Operation Courtesy Univ. of Twente

  20. 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/g opening angle • We will make up for that by tightly focusing and placing the crystal very close to the beam

  21. 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.

  22. The Advanced Beam Laboratory • Purpose Built • Two Primary Thrust Area • Lasers • Accelerators • Synergistic Opportunities

  23. ABL: CSU Accelerator Laboratory

  24. 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

  25. In Addition to the ABL 2nd Floor • 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 Basement 1st Floor

  26. 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

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