Research Facility / Accelerator

Taiwan Photon Source

The accelerator systems of Taiwan Photon Source at NSRRC comprise a 150-MeV injector and a 3.0-GeV storage ring. The injector consists of a 150-MeV LINAC and a 3.0-GeV booster synchrotron.

List of Parameters

Storage Ring
Maximum energy 3.0 GeV
Maximum beam current (multibunch) 500 mA
Maximum beam current (single bunch) 10 mA
Beam lifetime (3.0 GeV, 500 mA) > 10 hr
Circumference 518.4 m
Orbital period 1729.2 ns
Number of superperiods 6
Lattice type DBA (Double Bend Achromat)
Natural horizontal beam emittance 1.6 nm-rad
RF frequency 499.654 MHz
RF Gate Voltage 3.5 MV
Harmonic number 864
Critical photon energy from dipole magnet 7.12 keV
Bending radius 8.40338 m
Bunch length (1σ) 9.5 ps
Straight section length*number 12m*6+7m*18
Operation mode Top-up mode

Injector
Injection energy (LINAC energy) 150 MeV
Booster Extraction energy 3.0 GeV
Booster circumference 496.8 m
Injection cycle rate 3 Hz
Booster RF frequency 499.654 MHz


Insertion Devices Main Parameters

Name IU22 (2m) IU22 (3m) EPU46 EPU48
Type HYBRID HYBRID APPLE-II APPLE-II
Length of magnetic period (mm) 22 22 46 48
Number of periods 95 140 82 67
Minimum magnet gap (mm) 7 7 14 13
Vertical magnetic field (Tesla) 0.72 0.75 0.78 0.83
Horizontal magnetic field (Tesla)     0.52 0.55
Deflection parameter Ky 1.47 1.54 3.35 3.72
Deflection parameter Kx     2.23 2.47
Maximum magnetic force (kN) 9.5 14 40 35
Photon energy range to be used (keV) HP 5 – 25 5 – 25 0.28 – 2.0 0.22 – 2.0
  VP     0.42 – 2.0 0.34 – 2.0
Total length (m) 2.58 3.57 3.89 3.43
Installation Jun. 2015 Jun. 2015 Jun. 2015 Jun. 2015