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mardtb  "desktop beamline"

Fully motorized versatile goniometer system with support for a large variety of X-ray detectors
mardtb goniometer for single crystal X-ray diffraction (SCD)

Chi axis

  • for easily mounting crystals without spilling liquid nitrogen
  • rotation range: 0 - 90°
  • motorized

Illumination unit

  • excellent sample recognition
  • 2 white LEDs as front light
  • 1 red LED as background light
  • independent of lab light source

Collimator

  • 2 sets of motorized slits
  • 2 ionization chambers for continuous X-ray readings
  • experimental rotary shutter at end of collimator

Cryo actuator

  • holder for various types of cold heads
  • designed for one-handed operation
  • moves cold head out of the way for crystal mounting
  • motorized version available

Crystal monitor

  • built-in camera with large LCD screen

Motorized goniometer head

  • built-in x,y,z motors
  • solenoid for holding magnetic caps
  • compatible with all types of caps
  • point & click centering by software

Distance & 2-theta

  • translation along beam approx 380 mm
  • 2-theta rotation of up to 30°
  • mount for many types of detectors (up to 80 kg)

Automatic alignment system

  • hor. & vert. motor for translations around beam
  • hor. & vert. motor for rotations around beam
  • fully automatic beam search
  • fully automatic beam optimization
  • continuous monitoring of X-ray beam

With the mardtb 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.

Optionally, the mardtb goniostat can be controlled from a mobile device (Android, iOS coming up soon). Please look at the mardtb app page for more details.

The mardtb desktop beamline supports a large variety of X-ray detectors, i.e. the mar345 image plate detector, the EIGER2 and PILATUS4 series of hybrid pixel detectors by Dectris as well as the CCD detectors by Rayonix. It may even support detectors by other detector manufacturers. Please ask us!

While the mardtb desktop beamline has been designed originally for single crystal diffraction experiments (SCD) it may also be used for certain types of powder diffraction experiments (XRPD) and other types of applications. In particular when used with the mar345 detector that is the perfect detector for all kind of X-ray diffraction experiments where detector size matters more than read-out speed.

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, the SX-165/MX-225 CCD detector, the PILATUS4 260K/1M or the EIGER2 1M/4M pixel detectors.

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.

NO ICING

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.

DEPENDABILITY

After many years of heavy-duty operation at many synchrotrons and home labs we are confident to say: there is nothing around that compares to the reliability of the mardtb goniometer.

COST-OF-OWNERSHIP

The mardtb goniometer is renowned for its reliability. The cost of ownership for the mardtb, in particular, comes close to zero.

CONFIGURATIONS

mardtb desktop beamline with mar345 image plate detector

Standard: 14 motors

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.
mardtb desktop beamline with mautomatic goniometer head

Automatic goniometer head: 16 motors

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.
mardtb easymount: automatic sample loading mechanism

easymount: 19 motors

The easymount is a fully motorized 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.
marcsc automatic sample changer

Sample changer: 22 motors

The sample changer adds 3 more motors for sample storage to the easymount configuration. Please see the “sample changer” product page for more details.

OPTIONS & ACCESORIES

mardtb desktop beamline with automatic goniometer head 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 Motorized cryo-slider: 
  • Slider for automatically moving the head of the cryo cooler 20 mm up or down along the cold stream
Illumination unit for better sample alignment Sample illumination unit: 
  • LED’s for creating homogeneous illumination conditions for the built-in sample viewing system
  • Flippable paddle for homogeneous background
mardtb app  mardtb app: 

SPECIFICATIONS

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