The heart of the beamline is a 1.4meter toroidal grating monochromator (Jobin Yvon-TGM-1400) covering the wavelength region of 40Å to 1000Å. The monochromator consists of three interchangeable gratings to cover the entire wavelength region. The optics of the ARPES beamline consists of a pre-focussing mirror, monochromator with entrance and exit slits, gratings, and a refocusing mirror. All the focussing optical elements have toroidal shapes and are coated with platinum on bulk zerodur material. The side view of the optical layout of the beamline is given in figure above. The experimental station of the beamline is capable to record angle resolved photoelectron spectra of solid samples with a facility to prepare the samples in situ. Size of the beam spot at the sample is approximately 1mm×1 mm. Flux at the sample is of the order of 10¹⁰ photons/sec./mm².

1. Acceptance: 9mrad horizontal x 5 mrad vertical
2. Pre-mirror : Toroidal mirror, vertical deflection, Pt coated.
3. Monochromator: 1.4 meter focal-length toroidal grating monochromater (TGM-1400);
4. Post-mirror: Toroidal, vertical deflection, Pt coated.
5. Spot size: Around 1 mm x 1mm.
6. Photon flux : Approximately 1010 photons/sec/mm2 at the sample.