The photon source of the new PEARL beamline is a refurbished U70 undulator that delivers horizontally polarized photons in the range from 85 to 2000 eV. The calculated photon flux and other characteristics of this photon source are shown below.
Photon flux of the U70 insertion device. The energy range between 85 and 2000 eV is covered by three harmonics with crossing points near 700 and 1100 eV.
Calculated horizontal source size (standard deviation) as a function of photon energy.
Calculated vertical source size (standard deviation) as a function of photon energy.
Calculated horizontal divergence (standard deviation) of the photon source as a function of photon energy.
Calculated vertical divergence (standard deviation) of the photon source as a function of photon energy.
Parameter | Value |
|---|---|
Electron energy (GeV) | 2.7 |
Average current (mA) | 400 |
Emittance H/V (pm rad) | 126 / 8.8 |
Period length (mm) | 70 |
Number of periods | 22 |
Magnetic field (T) | 0.7 |
Kmax | 4.8 |
Total integrated power (kW) | 1.5 |
Approx. source size H/V (μm) | 30 / 10 (σ) |