MarDTB GONIOSTAT

With the MarDTB Goniostat System, integration on to X-ray sources from sealed tubes to synchrotrons has never been easier!

The marresearch Desktop Beamline® is the latest addition to our line of products. With this instrument we introduce all those nice features that users know from synchrotron beamlines to your home lab. It offers a very high degree of automation. Virtually all movements are motorized. All motors are controlled by a microprocessor that can easily be controlled via TCP/IP from a host computer. This makes this goniometer system very versatile and easily expandable to control other external motors. Integration on to X-ray sources from sealed tubes to synchrotrons has never been easier! Due to the built-in intelligence beam search and optimization from scratch can be achieved by a single button press without user intervention.

Stand alone operation

- Works with any X-ray source (Mo sealed tube to latest synchrotrons)
- Standard Mar345 or SX-165 detector mount
- Compatible with existing Mar345 and SX-165 detector systems
- Automatic alignment via host computer

Dedicated microprocessor

- Real-time OS, TCP/IP services
- 10BaseT Ethernet interface
- Industrial serial bus for expandability
- Open software interface for easy customization

Collimator System

Motorized Slits
- Automatic beam shape optimization
- Variable aperture from 0 to 5 mm with 2.5 µm resolution
- Individual settings for vertical and horizontal beam width
- Tungsten slits for high quality beam shaping
- Automatic or manual setting

Ionization chambers with large dynamic range (108)
- Covers sources from 3rd generation synchrotrons to sealed tubes
- Fast automatic beam optimization and analysis
- Automatic capture of primary beam characteristics

Fast rotary beam shutter
- Rotary solenoid for fast operation (1 ms)
- Optical open- and close-state verification
- Adaptive exposure synchronization

High resolution CCD microscope
- Viewing direction along the beam path (20° offset)
- Highly sensitive high resolution CCD camera (0.0003 lux / f1.4)
- 2 mm x 2 mm viewing area for easy crystal location and centering
- 4" LCD monitor integrated in goniometer (70:1 magnification)
- Video output for secondary monitor and frame grabber
- Crystal view capture during data collection

Motorized precision tungsten primary beamstop
- Automatic beamstop to crystal distance optimization
- Easy beamstop alignment aided by microscope
- Electronic detector collision protection
- Easily attachable/detachable
- 50 mm maximum crystal to beamstop for low resolution optimization

Goniometer System

High precision phi-axis
- Horizontal configuration
- Resolution: 0.000625°/step, speed: up to 900°/min
- Accuracy: 0.002°, reproducibility: 0.00125°
- Manual gear unlock (anticlockwise) for easy crystal centering
- Electronic referencing of zero position
- Exposure synchronization with shutter feedback
- Enhanced IUCR goniometer head mount

Motor driven phi-axis translation
- Automatic/manual adjustment, electronic position referencing
- 20 mm range for a 49 mm IUCR goniometer head, resolution: 0.3125 µm/step
- Positioning speed up to 12.5 mm/sec for cryogenic purposes

Detector Mount

Motorized vertical 2-theta arm (0° to 30°)
- Mar345: 2-thetamax = 96°, dmin(MoKalpha)= 0.48Å, dmin(CuKalpha)= 1.04Å
- SX-165: 2-thetamax = 106°, dmin(MoKalpha)= 0.44Å, dmin(CuKalpha)= 0.96Å
- No distance restrictions, electronic position referencing
- High resolution positioning (approx. 0.0001°/step at about 1°/sec)

Motorized crystal to detector distance translation stage
- Mar345: 75 mm to 425 mm, SX-165: 35 mm to 385 mm
- Integrated into 2-theta arm , no theta restrictions
- Electronic position referencing
- Resolution: 1.25 µm/step, speed: up to 25 mm/sec

Cardanic Cradle

Positional alignment
- High precision vertical and horizontal translation
- Automatic primary beam profiling
- Vertical range: ± 7.5 mm (352.5 mm to 367.5 mm above table top)
- Vertical resolution: < 1 µm (0.05 µm/step), vertical speed: 0.2 mm/sec
- Horizontal range: ± 10 mm
- Horizontal resolution: < 1 µm (0.3125 µm/step), horizontal speed: 3 mm/sec

Directional alignment
- Spindle driven horizontal and vertical rotation
- Automatic beam optimization
- Vertical rotation range: approx. ± 2°
- Vertical resolution: approx. 0.3 µrad/step, vertical speed: approx. 2 mrad/sec
- Horizontal rotation range: ± 3.5°
- Horizontal resolution: approx. 0.8 µrad/step, horizontal speed: approx. 15 mrad/sec

Beam Profiling
- Configurable adaptive beam optimization: any beam from any optic
- Fully automatic 3D beam profile analysis

Options

- Remote control with all functions
- Motorized phi-axis swing ('inverted phi')

Cryostream mount
- At 45° about the beam axis (5° towards the source, no distance restrictions)
- Cryostream centered within 0.5 mm around the crystal
- Distance of cryo-nozzle adjustable from 8 mm to 18 mm

Cryostream exhaust
- Adjustable flow rate, up to 50 l/min capacity
- Improved flow conditions around the sample, virtually no icing near the sample