Design Parameters

The design concept of accelerator is composed from three part: 100 MeV Injector, 100 MeV – 3 GeV Full Energy Booster Ring  and 3 GeV Storage Ring. The synchrotron radiation will be produced from the undulator which is placed the straight sections on the storage ring. The storage ring is isomagnetic and the length of the straight sections are 5 m.design-1

Main Accelerator Parameters

Parameter F.D. Mode Achr. Mode
Energy (GeV) 3 3
Circumference (m) 477 477
Beam Current (mA) 500 mA 500
Bet. Tunes Qx/Qy 31.19/6.15 36.24/6.18
Nat. Chromaticity x0x /x0y -70/-38 -84/-43
Cor.  Chromaticity xx /xy 0.0/0.0 0.0/0.0
Energy loss / turn (keV) 375.1 375.1
H. emittance (nm) 0.52 0.93
V. emittance (nm) 0.0052 0.0093
Betaxmax (m) 12.7 15.4
Betaymax (m) 25.3 28.1
Betax in the mid. of straight sect.(m) 12.7 15.4
Betay in the mid. of straight sect. (m) 7.5 9.8
Dispx in the middle of straight sect. 0.09 0.0
Number of straight section 20 20
Length of straight section (m) 5 5
Rf Voltage (MV) 3.5 3.5
Harmonic number 795 795
Max. Number of bunch 795 795
Bunch charge (nC) 1.0 1.0
RMS Bunch length (mm) 2.1 2.1
RMS Energy Spread  (%) 0.050 0.050
Momentum Acceptence (%) 4.8 4.8
Coupling (%) 1 1
Momentum vompaction factor 0.00032 00025
Touschek Life time (h) 10.2 10.2

 

 

Parameters of Several Example Undulators

Parameters CU18 SU15 IU28 U90
lu (cm) 1.8 1.5 2.8 9
Np 222 67 142 44
Gap(mm) 5 5.6 7 35
Kymax 2.25 2.10 2.35 10
L (m) 4 1.005 4 4
Photon Energy(keV) 1.4-20 1.8-23 0.8-12 0.1-3

 

 

Brilliance Spectra

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