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Laser-wire System Plans Overview

Detailed overview of UK's Laser-wire programme, including ATF Extraction line plans, ATF2 developments, and collaboration with various institutions. Updates on current and future projects and key activities for ATF extraction line laser-wire this year.

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Laser-wire System Plans Overview

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  1. Plans for Laser-wire SystemGrahame Blair30th May 2005 Brief overview of UK LW programme ATF Extraction line LW Plans for this year ATF2

  2. Laser-wire People BESSY T. Kamps DESY H. C. Lewin, S. Schreiber, K. Wittenburg, K. Balewski Oxford R. Bingham, B. Foster, N. Delerue, D. Howell, A. Reichold Royal Holloway (UL) • Agapov, G. Blair, G. Boorman, A. Bosco, J. Carter, L. Deacon, F. Poirier, M. Price, C. Driouichi University College London (UL) S. Boogert, S. Malton CCLRC Daresbury L. Jenner KEK • Aryshev, H. Hayano, P. Karataev, K. Kubo, N. Terunuma, J. Urakawa Kyoto N. Sasao SLAC A. Brachmann, J. Frisch, M. Ross Project web page: http://www.hep.ph.rhul.ac.uk/~lbbd/

  3. RHUL UCL 11.2.05 + Oxford DESY CERN + UCL Laserwire - PETRA Progressing really well

  4. PETRA laser-wire – 2d system • 2-d scanning system • Mechanics designed + built at Oxford • Optics + electronics on order • Final construction at RHUL with UCL + Oxford • Will be shipped to DESY in summer 2005

  5. Laser-wire Future • Major new laser lab now set up at Oxford • Building international group in advanced lasers for • accelerators; mode-locked system planned. • Install micron laser wire in ATF extraction line • Build expertise in ultra-fast EO scanning • Improve PETRA LW performance • Plan move to PETRAIII location + new optics • Build ATF2 micron-scale laser-wire • Multiple IP systems • ATF2 proposal for LW • “Shintake” systems with Tokyo Uni./ KEK • (ATF2 proposal in preparation)

  6. ATF Laser-wire Motivation At ATF, we will aim to measure micron-scale electron spot-sizes with green (532 nm) light. Aim at intra-rain (fast) scan for 300ns bunch spacing. The final spot-size measurable at ILC will have implications for the length and layout of the BDS diagnostics section. The ATF/ATF2 results will be crucial to determine the technical boundaries.

  7. pulsed laser-wire location

  8. This year’s activity for the ATF extraction line laser-wire • March 2005:“study trip”: Understand the possible setup [optics/infrastructure], prepare our DAQ. • May 2005:Laser measurements, study the laser beam optics. Plan DAQ. Electron beam optics. Lens design. • September 2005:Install laser transport and beam delivery (Optics, Scanning, electronics), install vacuum vessel and build final focusing lens. First installation of DAQ. • November/December 2005:Laser-wire run.

  9. + Axel + Marc + Pavel + Alex + KEK

  10. Other issues • Multiple IPs:How many laser-wires will we need for ATF2 / ILC? Synergy with “Shintake” system. • Laser transport:Multiple IPs – how do we distribute the laser light; fibers ? Local laser amplifiers ? Timing issues ? • Compton Detectors:How best to detect – electrons/photons (both?). Speed, resolution, location. Also EUROTeV input here. • Optics design of beam diagnostics regionStill lots to do; intrinsic part of our programme.

  11. Complementary Strategy PETRA aims: Turn-key diagnostic, reliability, speed, resolution. 2-d system. Workhorse diagnostic for PETRA III and foundation for ILC. Will use identical DAQ for ATF. ATF2 aims: Micron spot-sizes in ILC-like conditions. Critical LW specs for CDR. Both: excellent training ground for the people who will actually build the ILC

  12. Summary • PETRA and ATF/ATF2 complementary laser-wire • systems • Strong international team growing around ATF • Major new laser project about to grow in UK. • Very successful visit to KEK • Look forward to mini-workshop in London in June • Thankyou to our hosts at KEK for their hospitality, • help and support.

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