Monochromator Systems
Every IDT monochromator is tailored to its beamline, and built around thermal isolation and stiff, stable mechanics.
At a glance
- Each monochromator is tailored to the individual needs of the customer.
- Thermal isolation for minimal thermo-mechanical drift, removing the need for water stabilisation circuits or heaters.
- Crystal cooling designed for the specific beam profile and heat load.
- Ultra-stiff mechanics and rotary tables.
- Mechanics mounted directly on granite base blocks and decoupled from the vacuum vessel.
- Multiple encoders on the Bragg axis.
- UHV compatible DC servo motors as an option.
- Factory energy scan tests using a custom laser quad diode system.
In this range
-
Air Bearing DCM1
GSECARS, MR-CAT and 9-BM at the APS; SMI at NSLS-II
A direct drive air bearing Bragg stage. No contact points, only a 10µm air film, so there is zero backlash and no wear over time.
- Stability
- Measured angular stability of 54 nrad
- Bragg speed
- Greater than 20°/sec achievable
- Stiffness
- Radial stiffness of 270N/µm
-
Ultra-Stable Horizontal DCM
I14 Hard X-ray Nanoprobe, Diamond Light Source
A cryo-cooled, horizontally deflecting DCM designed with stability as the primary goal, for a beamline 175m long.
- Energy
- 4 keV - 26 keV with Si(111) crystals
- Offset
- 35mm fixed horizontal offset
- Vibration
- First mode at 160 Hz with an amplitude of 25 nrad
-
Bending Magnet DCM
B16, B18 and B21 at Diamond Light Source; DUBBLE CRG at the ESRF
A direct water-cooled first crystal with small bore cooling matched to the beam footprint. On B18 it runs Quick EXAFS.
- Energy
- 2.05keV - 35keV (B18)
- Crystals
- Si(111) & Si(311) with automated crystal exchange
- In service
- Over 150,000 scans completed on B18
-
Cryo-Cooled Horizontally Deflecting DCM
XFM beamline, Australian Synchrotron
A fixed-offset DCM. Soft annealed copper couplings in the cryo-cooling give minimal vibration transmission to the first crystal.
- Energy
- 4keV - 25keV
- Stability
- Measured stability of 18 nrad
- Vacuum
- <5×10-8 mbar
-
Double Laue-Crystal Monochromator
Imaging and Medical Beamline, Australian Synchrotron
A translating first crystal and a fixed second crystal that acts as an energy reference, optimised for stability over a sample-mono distance of >150m.
- Energy
- 16keV - 100keV
- Offset
- Variable mono beam offset 20mm to 25mm
- Vacuum
- 1×10-7 mbar
-
Horizontally Deflecting Monochromator
I04-1, Diamond Light Source
A fixed energy, single crystal monochromator. The crystal is cooled through a copper finger in a liquid gallium bath, for vibration-free cooling.
- Energy
- Fixed energy of 13.53keV
- Crystal
- Si(111) at a fixed Bragg angle of 8.402°
- Vacuum
- <5×10-9 mbar
-
Sagittal Crystal Bender2
B21, Diamond Light Source
A four bar bender with a ribbed crystal to minimise anticlastic bending. In routine operation on B21 since 2013.
- Bend radius
- To 1.2m
- Acceptance
- Horizontal beam acceptance 60mm
-
DCM Upgrades
GSECARS at the APS; DUBBLE CRG at the ESRF
A cost-effective upgrade of an existing DCM to our latest crystal cage, with a new in-vacuum Bragg encoder and a natural granite base block.
- Crystals
- Si(111) & Si(311) crystal sets
- Re-used
- Existing Bragg axle and vacuum vessel
-
Quad Diode Scan Testing
A laser is shone through the DCM onto a quad diode detector several metres away. Scanning performance is measured under vacuum, with coolant flowing, before delivery.
- Result
- Lookup tables for pitch & roll correction at factory acceptance
1 Air bearing goniometer © Copyright Science and Technology Facilities Council 2011. Manufactured by Instrument Design Technology under licence from the Science and Technology Facilities Council.
2 Built under licence from the Swiss-Norwegian Beamline.
Discuss your project
Tell us about your beamline and what you need. An engineer will reply.