View into the ring vacuum chamber of the BX01 dipole magnet along the beam path.
In the background the slotted extraction mirror M1 is located.

BX01 Magnetic Field strength:

1.4 T

Type:

Continuous Field Radiation

Source length:

350 mm

Extraction mirror M1:

820 mm downstream source centre

Horizontal acceptance of M1:

61 mrad

Vertical acceptance of M1:

39 mrad

Spectral range:

ca. 8 – 12500 cm^-1 (ca. 1 meV – 1.5 eV)
extendable up to the visible and UV regime

The actual source of IR radiation is produced by the continuous field within the dipole magnet BX01. It produces a maximum flux of up to 2 x 10¹⁴ photons sec^-1 0.1% bw in a range of ca. 1 meV – 1 eV i.e. from 8 to 12500 1/cm. There is an important visible contribution. The high energy photon flux goes through the slit of the M1 mirror.

Left: The BX01 dipole magnet vacuum chamber and the beamline extraction chamber.
Right: In red the optical path of the vis and IR radiation. In violet, the path followed by the harder radiation through the slit of M1.

Comparison of the calculated IR photon flux on the first (extraction) mirror M1 with the expected flux inside the spectrometer. The decrease of the flux intensity is caused by the different windows.

Calculated brightness of the IR beamline.