|
|
 |
|
|
|
|
|
|
|
|
|
|
Indus-2 |
ISUD |
MAASCD |
ACEFD
|
|
Beamlines on
Indus-1 |
The 450 MeV synchrotron radiation source Indus-1 will emit
radiation in the form of a quasi-continuous radiation spectrum in the soft
x-ray - vacuum ultra violet spectral domain. For effective utilization of
this radiation for any specific application, be it in the field of
physics, chemistry, or biology, it has to be brought up to the sample under
investigation. The specification of the beam at the sample in terms of
size, divergence and wavelength and its spread, depends upon the type of
application and / or the experiment. This transport and refinement of the
radiation is done by a set of instrumentation that collectively is termed
as the Beamline. Many beamlines can be put up on the various bending
magnets and insertion devices of a storage ring thereby allowing several
scientific experiments to be performed simultaneously. On Indus-1, six
beamlines and experimental stations are being built initially. RRCAT is
building one of these six beamlines for reflectivity measurements. This
beamline will also serve as a general-purpose beamline. BARC, Mumbai is developing four beamlines, and Inter University Consortium for DAE Facilities (IUC-DAEF), Indore, is building one.
Beamline developed in RRCAT:
- Beamline for soft x-ray - vacuum ultra violet radiation range (4 to 100 nm).
- Beamline designed using detailed ray tracing simulations.
- Built around a grazing incidence toroidal grating monochromator (TGM).
- TGM comprises of three gratings interchangeable in ultra high vacuum.
- Pre and post focusing optics consists of toroidal mirrors, employed in grazing incidence to enhance the reflectivity.
- Spectral resolution and the photon flux are expected to be in the range 200-800 and 1011 photons/sec, respectively, for 100 mA current in Indus-1.
- Spectral resolution of the TGM, experimentally determined using the He I and He II spectral lines from a standard helium discharge source, matches well with the theoretically calculated resolution.
- Mirror mounts with rotational accuracies of ~ 5 arcsec have been designed, fabricated and tested.
- Mirror chambers, laser alignment box and a filter wheel chamber have been also fabricated; and installed on kinematic mounts for easy alignment.
- Screen type beam position monitors based on electromagnetic actuators have been developed and installed.
- Experimental Station : A high vacuum reflectometer is being developed. It has two independently controlled rotation stages and a translation stage in a vacuum of 10-7 mbar.
Click
here for a photograph (88 K, jpg) of the RRCAT beamline.
Other beamlines on
Indus-1
Beamlines being built by BARC, Mumbai.:
- Photo electron spectroscopy beamline using toroidal grating monochromator
- Photophysics beamline using a Seya-Nomioka monochromator
- High resolution spectroscopy beamline using a 6.6 meter off axis Eagle mount spectrograph
- Photon absorption spectroscopy beamline on a plane grating monochromator.
For more details of these beamlines, contact:
aproy@barc.magnum.ernet.in
Beamline being built by Inter University Consortium (for DAE facilities), Indore:
- Photo electron spectroscopy beamline using toroidal grating monochromator (IUC).
For more details of this beamline, contact :
smc@iuc.rrcat.gov.in |
|
|
|
|
|
|
