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Laserwire UK Meeting Oxford January 16th 2004

History. Started about 4 years agoResponsive RA (Thorsten)Startup funds for laser lab at RHUL (PPARC RG)PPESP Equipment ( travel) grantSupport from CCLRC/PPARC seed cornBritish Council (Germany) Royal Society (Japan)New funds should be online in April 2004. CTF2. Started on CTF2 in 2001Co

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Laserwire UK Meeting Oxford January 16th 2004

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    1. Laserwire UK Meeting Oxford January 16th 2004 Intro G.B First results PETRA T. Kamps BMP Readout J. Carter CCD Readout S. Boogert Electronics G. Boorman Outstanding issues G.B

    2. History Started about 4 years ago Responsive RA (Thorsten) Startup funds for laser lab at RHUL (PPARC RG) PPESP Equipment (+ travel) grant Support from CCLRC/PPARC seed corn British Council (Germany) + Royal Society (Japan) New funds should be online in April 2004

    3. CTF2 Started on CTF2 in 2001 Collaborated on laserwire hardware and installation and “data taking”. Designed, purchased and installed the final focus system. Signal swamped by background… But a lot of experience and long-term collaboration.

    4. PETRA laserwire Installed in March 2003 DESY built the vacuum chamber with advice from T.K. RHUL supplied the scanning, control, optics and design. UCL designed the CCD readout system. First data taking last summer.

    5. Outstanding items/future Second dimension at PETRA - Optical switching, mechanical design. Calibration of CCDs Fast scanning at PETRA (new laser?) - can go up to 30 Hz with present laser Integrated readout and automated system. Radiation protection/new SR-hard optics. Coarse-scan before fine-scan.

    6. KEK option In discussion with ATF collaboration Micron spot sizes with 1.8ns spacing (?). 2” beam pipe – different optics regime Design of vacuum vessel plus optics Optical transport from high power laser Inclusion of TRD scanner for low-power calibration (mechanical design + tests)

    7. Advanced laser systems Technology Choice this year – time structure of electron bunches should be known. There is >~ 1 year to optimise laser requirements for the LC. – stability, power, rate etc. Buy and set up such a laser system at Oxford Test system, optical transport, RF drivers etc. in UK; aim at a full working system with scanners, diagnostics etc. Use PETRA (+KEK?) for in-the-field tests of new ideas… eg different laser modes, different scanning modes, optical delays for multi-bunch etc.

    8. Wider issues Design of fully operational laser-wire system in BDS. Full simulations. EU funding. (March 4th 2004 deadline) Shintake systems? Laserwires for energy spread Laserwires in the linac – signal extraction Fast calorimeter R&D.

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