1. LUCX FACILITY INTRODUCTION : PRESENT STATUS AND FUTURE PLANS A. Aryshev On behalf of QB group and THz collaboration Mini-workshop for advanced THz and Compton X-ray generation 18 – 19 March 2013

2. Outline THz project overview – LUCX activity – LUCX Projects Overview – THz program LUCX Laser system LUCX 2012 upgrade – LUCX operation modes – e-beam optics – THz program vacuum system, manipulator Measurement setup and DAQ Schedule & Conclusion Resources 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 2

3. LUCX: international collaboration Initially the machine was built as a RF Gun test bench in 2005 In 2006 (RF Gun + Accelerating structure) it was extended to produce ~40MeV e-beam and Compton experiment started 2009 a new 1.6 cell RF-Gun was made, installed and commissioned. 2011 RF-Gun replacement -> 3.6 cell From 2009 CDR experiment started From 2012 THz program was started KEK, Waseda University, Osaka University, Tomsk Polytechnic University, Royal Holloway University of London. Kharkov Institute of Physics and Technology, Oxford, Moscow Engineering Physics Institute. 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 3

4. Accelerator operation 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 4 LUCX Activities Overview ProjectsMachine studies 1. Beam dynamics 2. Multibunch tuning 3. Stabilization TrainingMaintenance 1. Alignment 2. Calibrations 3. Debugging General improvements and upgrades Ti – Sa laser system integration ZEMAX and CST simulations Documentation & publicity

5. 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 5 LUCX Projects Overview Pulsed-laser Super-cavity R&D for compact X-ray source 4-mirror planar optical super- cavity X-ray imaging THz CDRUndulator studyCSPRBLM FSTB fs buncher system Multi-bunch train Photo-cathode RF Gun and accelerator R&D Multi-cell Accelerating cavities development Project candidates THz imaging

6. 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 6 THz program Laser system (FSTB + Nd:YAG) Establishment of FSTB infrastructure FSTB startup, stable operation Reliable and routine laser beam diagnostics Buncher development Ti:Sa 3 rd harmonic Synchronization with LUCX timing Integration with LUCX control soft Modification of LTL. Optical switch between FSTB and Nd:YAG Accelerator side Vacuum system modification in a course of 2012 LUCX upgrade THz chamber and manipulator design and Manufacturing Benchmarking, calibration Installation into beamline fs electron beam generation Cs2Te Cathode response time study Longitudinal beam size diagnostics Measurement System and DAQ THz spectrum measurements Shot-by-shot intensity Mechanical part of THz detection system DAQ & soft !!! - ≥ 50% completion !!! – vast importance

7. LUCX activities key points Accelerator – Generation of a stable ps and fs electron beam – Reliable beam diagnostics – Ability to measure longitudinal beam profile – Beam dynamics simulation (with intension to make it on-line) – Control upgrade (Soft&Space) Laser system – Will be shown in a next talk by Dr. K. Lekomtsev THz Measurement system – Will be shown in a next talk by Dr. M. Shevelev Compton experiment – Covered by prof. J. Urakawa on March 18 th CDR experiment – Covered by Dr. A. Aryshev on March 18th 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 7

8. LUCX Facility 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 8 8 FSTB Nd:YAG Modulator #0 KLY#0 LUCX accelerator tunnel KLY#1 Modulator #1 LUCX control room

9. LUCX “2012 U PGRADE ”: TH Z, 12- CELL BOOSTER 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 9

10. LUCX “2012 upgrade” 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 10 GV THz chamber CDRComptonTHz

11. LUCX “2012 upgrade”, e-optics 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 11 “Compton optics” THzComptonCDR

12. LUCX beam diagnostics BPMs – Well established Button BPM system Profile monitors (Screens: OTR, “DMQ”) – Require upgrade (CCDs, analysis) -> better emittance measurements Beam Charge monitor – Well established, FC and ICTs Beam energy, energy spread – Well established, but after 12-cell booster Beam loss monitor – So-called “plick” or a simple gamma detector – has to be installed Longitudinal profiling – Has to be developed. Candidates: Streak camera, Deflecting cavity. 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 12

13. LUCX Control upgrade Control room re-arrangement to accommodate large collaboration groups Control PCs and display system upgrade Control soft at present will be the same with the slow upgrades in the future FemtoSecondTestBench control and monitors will be installed and included into the main LUCX control soft Well defined and documented API 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 13

14. Resources THz program web: http://www-atf.kek.jp/thz/index.html http://www-atf.kek.jp/thz/index.html LUCX wiki (documentation, e-log, etc.): http://atf.kek.jp/twiki/bin/view/LUCX/WebHome http://atf.kek.jp/twiki/bin/view/LUCX/WebHome QB program web: http://kocbeam.kek.jp/ http://kocbeam.kek.jp/ 19 March 2013 Mini-workshop for advanced THz and Compton X-ray generation 14