pOid=10582 / Sprache: en / Aktive Version (Content-ID: 355785) Originaler Quelltext des Contents ohne Interpretation dynamischer Inhalte: --------------------------------------------------------------------------
The U100 undulator
To produce infrared light up to 280 μm a hybrid undulator (U100) has been installed at the radiation source ELBE. It consists of 38 periods each 10 cm long with Sm2Co17 magnets and soft-iron poles.
The undulator gap can be varied from 24 mm to 150 mm by means of a girder system. The resulting undulator parameter varies from 2.7 to 0.3. To let pass radiation longer than 40 μm through the undulator gap a partial waveguide was installed. It spans from the upstream undulator entrance to the downstream mirror.
The main parameters of the undulator U100
Perod length |
10 cm |
Number of periods |
38 |
Minimum gap |
24 mm |
Maximum undulator parameter Krms |
2.7 |
On-axis magnet field amplitude Bu (left axis) and rms undulator parameter Krms (right axis) as a function of the undulator gap g. |