With the marresearch desktop beamline we bring all those nice features that users know from synchrotron beamlines to the home lab. It offers a very high degree of automatization. Virtually all movements are motorized. All motors are controlled by a micro-processor that can be operated via an Ethernet interface from a host computer.
Highlights:
Versatile: The instrument can be combined with any X-ray source from Mo sealed tubes to latest synchrotrons. The instrument accomodates either the mar345 image plate detector or the SX-165/MX-225 CCD detector.
Automatic beam alignment: Thanks to a cardanic cradle, built-in ionization chambers and full motorization, the instrument will align itself automatically to the beam by pushing a single button in the provided software.
“Inverted PHI” geometry: The built-in CHI rotation stage allows the PHI-axis holding the goniometer head to swing up into a vertical position. This makes cryo-mounting really straightforward.
Built-in video: An area of approx. 2 x 1.5 mm around the sample position will be displayed on the built-in LCD monitor sitting on top of the collimator. The video stream is redirected to a control computer.
True 2-theta stage: A 2-theta motor allows for a vertical 30 degree rotation of a detector around the sample.
Highly optimized cryogenic environment: The instrument provides a fixed mount for a range of cryo-cooling devices (Oxford Cryosystems, Oxford Instruments, Rigaku Xtreme, etc.). A cryo-stream exhaust with adjustable flow rate ensures a laminar flow of the cold-stream around the sample and eliminates icing.
Up to 22 motors: Depending on the configuration of the desktop beamline (see below), up to 22 motors can be found in the desktop beamline.
Expandable: Up to 32 motors can be operated by the built-in industry-standard high-speed serial CAN-bus architecture of the desktop beamline without having to change the controller hardware.
“Desktop beamline” configurations:
14 motors in standard configuration: The standard desktop beamline comprises motors for a PHI-axis (sample rotation), a Z-axis (horizontal sample translation), a CHI-swing (for easy cryo-mounting), a sample-to-detector translation stage, a 2-theta stage, a beamstop and 2 pairs of horizontal and vertical slits. The cardanic alignment system adds 4 more motors for translations and rotations of the instrument.
16 motors in automatic goniometer head configuration: The automatic goniometer head adds x- and y-translation translations to the goniometer head (the z-translation being a standard component), making a standard IUCr-type goniometer head obsolete. Sample centering can be done from the computer or via a local motor control box.
19 motors in easymount configuration: The easymount is a fully motorzied sample mounting and retrieval mechanism. The easymount adds one motor for the cryo-cooler translation and 2 motors for the sample transport system to the automatic goniometer head configuration. Please see the “easymount” product page for more details.
22 motors in sample changer configuration: The sample changer adds 3 more motors for sample storage to the easymount configuration. Please see the “sample changer” product page for more details.
Specifications
General Features
Stand alone operation Works with any X-ray source (Mo sealed tube to latest synchrotrons) Standard mar345 or marCCD detector mount Compatible with mar345 and marCCD and marmosaic 225 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 collimator (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
Fast rotary beam shutter Rotary solenoid for fast operation (1 ms) Optical open- and close-state verification Adaptive exposure synchronization
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
Motorized phi-axis swing ('inverted phi') Integrated into phi-axis assembly Configurable swing angle from 0° to 90°
Detector Mount
Motorized vertical 2-theta arm (0° to 30°) mar345: 2-thetamax = 96°, dmin(MoKalpha)=0.48 Å, dmin(CuKalpha)=1.04 Å marCCD: 2-thetamax = 106°, dmin(MoKalpha)=0.44 Å, dmin(CuKalpha)=0.96 Å 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, marCCD: 20 mm to 370 mm Integrated into 2-theta arm , no theta restrictions Electronic position referencing Resolution: 1.25 µm/step, speed: up to 25 mm/sec
Motorized crystal to detector distance translation stage mar345: 75 mm to 425 mm, marCCD: 20 mm to 370 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
Beam Profiling Configurable adaptive beam optimization:
any beam from any optic
Fully automatic 3D beam profile analysis
Mount and Cold Sink
for Cryogenic Attachments
Cryostream mount at 45° about the beam axis
(5° towards the source)
Cryostream exhaust with an adjustable flow rate, up to 50 l/minute capacity and virtually no icing near the sample
Support for Oxford Cryostream 600 and 700 & Cobra series, Oxford Instruments Cryojet and Rigaku Xstream
Options & Accessories:
Automatic goniometer head with motorized x,y,z-translations
Stepping motors for x,y,z- translations of mounted sample
Solenoid for holding magnetic caps
Software with loop-finding routines and sample centering without human intervention as well as “pick and click crystal” centering routines
Motorized cryo-slider
Slider for automatically moving the head of the cryo cooler 20 mm up or down along the cold stream
Sample illumination unit
LED’s for creating homogeneous illumination conditions for the built-in sample viewing system
Flippable paddle for homogeneous background
