Recent experiment results and progress of T singhua T homson Scattering X -ray source (TTX) Ch.X. Tang (唐传祥) * [email protected]清华大学工程物理系 Department of Engineering Physics, Tsinghua University @ Workshop on The Physics and Applications of High Brightness Electron Beams Maui, Hawaii – November 16-19, 2009
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Recent experiment results and progress of Tsinghua Thomson ...
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Recent experiment results and progress of Tsinghua Thomson Scattering X-ray source
4 TTX in Progress-Installation of New RF Gun Finished
4 TTX in Progress-Installation of 3-m SLAC TW linac
• Tsinghua Thomson Scattering X-ray Source (TTX) is under construction now and will be ready for commissioning at the end of this year.
• Beam diagnostic technologies ( emittance, bunch length, energy spread, et al) have been developed and tested.
• Different kinds of MeV electron diffraction experiments have been done during TTX construction.
• Synchronization between electron bunch and laser pulse has been tested.
• A LESR is under design for TTX.
4 Summary
Thanks for your attention!
1 TTX- Mini SR
For the pulse mode, the transverse emittance right before the beam is dumped is 2.2x10-7m.rad, the energy spread is 0.3%.
1 TTX- Mini SR
As for the steady mode, the equilibrium transverse emittance is 1.2 x10-6m.rad, the equilibrium energy spread is 4.4%
The working point of the steady mode is (Qx;Qy) = (3:197;1:662), which is close to the 5th order resonance. The dynamics is greatly influenced by the node (3:211;1:685), which limits the vertical DA. Moreover, the 5th order resonance may be further excited by the magnet errors. Nevertheless, the DA horizontal size is sufficient for the steady mode.