1. SLEGS Proto type on SINAP LINAC Jin-Gen Chen & SLEGS Collaboration

2. May 18th 2006The 6th China Japan Nuclear Physics Symposium Outline  A brief introduction of Shanghai Synchrotron Radiation Facility (SSRF) & Shanghai Laser Electron Gamma Source (SLEGS)  SINAP LINAC and Candidate lasers  The simulated results for backscattering  Progress in setup of proto type of SLEGS

3. May 18th 2006The 6th China Japan Nuclear Physics Symposium SSRF Layout 100MeV Linac injector 3.5GeV Booster 3.5GeV Storage Ring Wide range of wave length High power and high brightness Small pulse length High linear or circular polarization High efficiency High flexibility Characteristics of SSRF

4. May 18th 2006The 6th China Japan Nuclear Physics Symposium SLEGS @ SSRF  Astro-nuclear physics (e.g. 3  process)  Spin-physics  Hadron & Nuclear physics -Photo-disintegration -( ,n) reactions  Nuclear Fluorescent  Application for material science  New photon sources with quantum technologies … Physics Goals

5. May 18th 2006The 6th China Japan Nuclear Physics Symposium SLEGS @SSRF 1-25MeV, will be made by SINAP in 2008 at SSRF, China Candidate laser Maximum of power~1.5 kWBackscattering Gamma Wave length(  m) Energy (eV)Largest energy (MeV)intensity(s -1 ) CO 2 10.60.11721.9 10 8 － 10 10 65.10.01903.58 1000.01242.33 2200.00561.06  rather flat energy distribution with small spreading  high linear- or circular-polarization

6. May 18th 2006The 6th China Japan Nuclear Physics Symposium 100 MeV LINAC At present, SLEGS construction is under its primary stage. We now carrying out the construction of its proto type----a x-ray facility at 100 MeV LINAC.

7. May 18th 2006The 6th China Japan Nuclear Physics Symposium Main features of LINAC- present  single bunch mode;  Energy: 100 [MeV];  Energy resolution: 0.9%;  Pulse length: 1 [ns] (FWHM), 1.28 [A];  1  Normalized emittance: 107 (x), 137 (y) [   mrad];

8. May 18th 2006The 6th China Japan Nuclear Physics Symposium Candidate lasers

9. May 18th 2006The 6th China Japan Nuclear Physics Symposium 100 MeV LINAC vs. CO 2 laser as a sample  CO 2 laser:  =10.64 [  m]  Infrared.  Waist radius: down to ~10 [  m]  Power of CW laser: up to ~1500 [W]  Well-developed and generally-used in industry.  Relatively low cost.

10. May 18th 2006The 6th China Japan Nuclear Physics Symposium  The differential flux changes sharply with the transform of interaction position if waist width is very small but becomes insensitive when waist width of laser is large enough.  Total luminous flux increases and then decreases with increase of waist width of laser. In addition, a longer wave length laser corresponds a larger total luminous flux at the same waist width of laser.

11. May 18th 2006The 6th China Japan Nuclear Physics Symposium The collimation of laser and electron 约 1m 生成准直 孔 Ф 0.5mm 反射 镜 电子束 流 观察窗 约 1m 准直孔 Ф 0.5m m 反射 镜 准直光 路 CO2 激光 光路 观察窗做一垂直 标记 CO2 激光入射窗 检验共 轴 约 1m 准直孔 Ф 0.5mm 反射 镜 CO2 激光入射窗 1. To give a collimation initialization via the transport of electron beam 2. Co-axis of the collimated laser and the co 2 laser 3. Readjustment of the co 2 laser after the co 2 being fixed at the LINAC 4. Readjustment of the electron beam

12. May 18th 2006The 6th China Japan Nuclear Physics Symposium Ideal results real results

13. May 18th 2006The 6th China Japan Nuclear Physics Symposium

14. May 18th 2006The 6th China Japan Nuclear Physics Symposium Estimation of background Background from synchrotron radiationBackground from bremsstrahlung of electron and air

15. May 18th 2006The 6th China Japan Nuclear Physics Symposium Other relevant equipments 1. Data acquirement system 2. Control system 3. Detector system 4. Chamber of target

16. May 18th 2006The 6th China Japan Nuclear Physics Symposium Schedule

17. May 18th 2006The 6th China Japan Nuclear Physics Symposium Budget

18. Thank you very much!