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JAI and the Helmholtz VI

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1 JAI and the Helmholtz VI
Simon Hooker John Adams Institute for Accelerator Science

2 What is JAI ? The John Adams Institute for Accelerator Science is a centre of excellence in the UK for advanced and novel accelerator technology, created in 2004 to foster accelerator R&D in the universities JAI is based on 3 universities: University of Oxford; Royal Holloway College, London; and Imperial College JAI scale: ~25 academic professorial staff, ~15 research staff, ~10 affiliates, ~30 post-grad students, produce ~6PhD/year in Acc. science Sir John Adams (24 May March 1984) was the 'father' of the giant particle accelerators which have made CERN the leader in the field of high energy physics. John Adams worked at the UK Atomic Energy Research establishment on design & construction of a 180 MeV synchro-cyclotron. He then came to CERN in 1953 & was appointed director of the PS division in In Adams worked as director of the UK Culham Fusion Lab. In 1971 he returned to CERN and served until 1975 as Director-General of then called Laboratory II, responsible for the design & construction of the SPS. From he was executive DG of CERN and instrumental in approval of LEP.

3 JAI Faculty Riccardo Bartolini Grahame Blair Stewart Boogert Phil Burrows John Cobb George Doucas Brian Foster Simon Hooker Pavel Karataev Research Facilitator CERN Glenn Christian Ken Peach Chris Prior Armin Reichold Andrei Seryi Roman Walczak Vice-Molloy Michele Warren Ted Wilson Particle Therapy Cancer Research institute Emmanuel Tsesmelis Bleddyn Jones Stuart Mangles Steve Rose Zulfikar Najmudin Ken Long Ivan Konoplev Also : JAI Academic and Industrial Affiliates (not shown)

4 within the UK SciTech ecosystem
Diamond Light Source Central Laser Facility Daresbury Science & Innovation Campus ISIS neutron source Rutherford Lab & Harwell-Oxford Innovation campus Accelerator Science &Technology Centre

5 JAI research interests
3rd Gen Light Sources Future 4th Gen Light Source design ISIS & ESS neutron sources Neutrino Factory / m-cooling Accelerators for cancer therapy Ion sources LHC upgrade Linear Colliders

6 JAI research interests
Plasma channel development Advanced beam instrumentation Compact radiation sources

7 Development of plasma channels
Capillary discharge waveguide developed at Oxford To date: Channels up to 50mm long Typical on-axis density 1018 cm-3 Beams up to 1 GeV generated Leemans et al 2006

8 Development of plasma channels
Development of longer plasma channels Separate control of breakdown & main current pulse Capacitively-coupled RF discharge 10 mbar He 13.56 MHz 30 W RF power Cap diam 600 um Cap length 50mm To date work done by Anthony Dyson in “spare time” New grad student (Christopher Thornton) started last week

9 Development of plasma channels
Tapered channels can overcome dephasing limit Katsouleas1986, Sprangle 2001, Rittershofer 2010 Starting to develop tapered capillary discharge waveguides

10 Advanced Beam Instrumentation
Far-Infrared Coherent Radiation CSR, CDR for beam diagnostics Soft-X ray and microwave source based on Thomson scattering of CDR Nano-resolution BPM C, S-band (~100nm resol.) Special ~nm resolution Coherent Smith-Purcell radiation Longitudinal diagnostics –extending to fs range Laser – wire Ultra-fast nanosecond feedback LUXC, jointly with KEK Laser wire Smith-Purcell diagnostics instrumentation

11 Diagnostics development
Measurements of bunch duration of ~10fs pulses from radiation spectrum Smith-Purcell radiation Coherent OTR spectrum Development of phase-retrieval algorithms for longitudinal profile reconstruction Kramers-Kronig analysis Bubblewrap algorithm (Shrinkwrap +)

12 Diagnostics development
Measured OTR Fitted Deduced profile YAG Lineouts Measurement of transverse bunch profile from near-field image of COTR

13 Radiation generation SVEA AURORA Analytic Bajlekov, Fawley, Schroeder, Bartolini & Hooker PRSTAB (2011) Scaling analysis and GENESIS simulations of FELs driven by laser- accelerated bunches Considered limitation of SVEA in modelling FELS driven by fs bunches and seeded with HHG radiation S. Bajlekov, D. Phil thesis (2011)

14 Betatron radiation sources
Strong radial electric field within plasma wave cause transverse oscillation of electron bunch Generates very bright betatron radiation in keV range S. Kneip et al., Appl. Phys. Lett. 99, (2011)

15 Novel Compton Source JAI & ASTeC plan to develop new compact X-ray source Based on a patent filed by JAI Will use SC RF, sophisticated cryostat, sophisticated cavities ASTeC experience match perfectly the needs of the project Now forming working teams to develop the design further JAI RAL ASTeC & CI Daresbury

16 Accelerator Science Lab
Development of stable laser-driven accelerators Undulator / FEL radiation sources Compton sources etc

17 Summary JAI has a broad programme of research in conventional and plasma accelerators Training programme for next generation of accelerator scientists Research activities on plasma accelerators radiation generation novel diagnostics

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