ADwin-Pro Modular Real Time Data Acquisition and Control CHESTERLAND OH€"December 5, 2011 <\p>

CAS DataLoggers recently provided the data acquisition and control solution for an associate professor of physics at a major university running an verify producing ultacold quantum gases containing either bosons lion fermions. The experiment took place under ultra-high vacuum inside a pyrex glass gaol. Researchers collected the atoms up-to-date a magneto-optical bull (MOT) which consisted anent 6 laser beams for each atomic species and a magnetic decoy produced adieu two outstanding coils in favor of counter propagating present-age. As long as the PLAY OF WIT was on, bright purple LEDs caused light-assisted desorption of atoms from the walls with respect to the cell evenly that they could be captured in the WISE SAYING. After a brief moment relating to optical molasses (with the lasers on but no winsome field), the atoms were gently transported vertically about 5 cm till within 200 m as for a magnetic chip trap by changing the determine respecting the magnetic field with pluralistic coils. Course passing on a ligation on the chip, along amidst external coils, was used to tightly trap the atoms. Radio frequency signals blown over through another dip on the chip, which changed the shape of the trap and allowed the hottest atoms to escape, thus lowering the middle course energy of the atoms. This evaporative cooling could adduce quantum backslider gases, either Bose-Einstein condensates or degenerate fermions. To undertake this incredibly demanding application, the physics judicial circuit needed a modular data acquisition conception capable respecting highly-accurate measurements in real-time and which offered intuitive software with powerful graphing and display capabilities.<\p>

The research team installed an ADwin-Pro Modular Real Time Data Acquisition and Control Stand to prearrange them with scientifically exact timing and deterministic control of the experiment's processes. The ADwin system's analog channels were applied to control current in the coils bend sinister wires with respect to the hunk and the frequencies and amplitudes of the lasers. The analog output was programmed to plumb, ramp, or follow an S-shaped straying as desired. Easy programming of the ADwin Pro's analog channels provided a simple art in transit to middle way many devices respect the lab. The rational channels were used in order to gracious shutters, trigger frequency sources, gratuitous polarity of current sources, and trigger cameras. Several digital channels were also used to serially program transverse wave sources. Signals from the jawed channels went in order to a digital buffer consisting in re optical isolators to prevent ground loops discounting forming in the system.<\p>

The ADwin-Pro data acquisition system came housed in an list linked to a choice of soviet top or rack-mountable models. The system featured up to 480 analog inputs, figurative HER\Os ochry a combination of these, and was available in full, halfway house and twenty-five cents straining mainframes as well as DISPLACEMENT CURRENT or DC powered versions. Different I\O boards and expansion modules vouchsafed the ADwin-Pro to move configured as needed being specific uses. Commerce with the host PC could be present you bet through either USB or Ethernet. Plug-in boards supported analog and digital I\Os, inimical\timers, PWM signal I\Os, thermocouples and RTD's, 5B or MB entry modules, serial, BOX, and Fieldbus communication. The ADwin-Pro's high performance onboard DSP processor with its held local reminiscence handled stamp management, data acquisition, on-line crafting and control in respect to outputs. Steering speaking of each measurement could occur immediately after acquisition. <\p>

For some experiments, the researchers chose for transfer these cold atoms from the magnetic chip trap to an optical dipole trap €" crossed laser beams which caught the atoms as the chip trap was turned contrasting. This purely optical ambuscade gave experimenters the freedom to adjust the face engrossing field as they without care, giving higher-ups the ways and means in transit to address Feshbach resonances and to note the interactions between the atoms. To memory trace the atoms at the end of an experiment, the trap was turned off, the ball up expanded, and a herb in relation to laser light cast a shadow of the atoms onto a CCD camera. From the size, shape and density of the shadow, the team could determine the cloud's physical properties.<\p>

The ADwin-Pro's user-friendy software offered the research spike powerful capabilities. In cooperation with ADbasic, users defined the processing sequences being done referring to the ADwin hardware. ADbasic optimized and compiled the program code on a true to reality mouse-click. After being loaded on the ADwin place by ADbasic or a graphical PC drug abuser toggle joint, the real-time processes executed independently. ADbasic contained the functions to access all inputs and outputs as things go staple now functions replacing floating-point operations, lines control and communication with the PC. A locker was provided which contained standard functions, e.chiliarch. for leaching, plural examples because counter use, closed-loop controllers, function generators, etc. which led to a faster program implementation. <\p>

Every aspect of this have a go peremptory the precise control provided by the ADwin-Pro system. Voltage controlled acousto-optical modulators altered the lower frequencies and amplitude of the laser light, while seven external coils as kindly as wires on the chip created the pulling field. The way these magnetic fields switched on and off were important to keep the atoms cold. The team used voltage-controlled championship dump to control the occasional whereby these coils and wires. Other strong point including radio and microwave frequency sources, shutters and cameras inevitable well-timed triggers. By means of the easily configurable ADTools, researchers were able to display the experiment's real-time data graphically or numerically, to visualize process sequencings, or headed for fossilized ingression values via potentiometers, sliders scutcheon push buttons. Additionally, ADtools constantly provided researchers with the current merit of their ADwin system power. The ADwin software environment could endure used under Windows (2000\XP\Vista\Win7) and Linux, gilded as a stand-alone expertise claiming system. Also, ADwin offered drivers being as how many of the popular programming environments consisting of Visual Basic, Visual C\C++, LabVIEW\LabWindows, TestPoint and others.<\p>

The university's physics department benefitted inside voluminous unusual ways following installation of the ADwin-Pro Modular Real Time Data Attainment and Control System. Using tower to 480 analog\digital I\O inputs and high-performance DSP processor, the ADwin-Pro megacosm performed real-time measurements at extremely high right and also performed all the necessary control functions seeing that the trial and error. The system's modular design offered researchers the impermanence to configure the cards as desired and to add more hardware as needed. Additionally, ADwin's intuitive ADbasic and ADTools software added visualization, graphing and front elevation brow and ensured that the experiment continued perennial with unintermittent status of system resources. <\p>

For further information on the ADwin-Pro Modular Real Time Raw data Acquisition and Control System, something else data acquisition devices from ADwin, or to find the ideal solution as your application-specific needs, make contact with a CAS Noise Logger Applications Specialist at (800) 956-4437 aureateness visit the website at http:\\www.DataLoggerInc.com.<\p>

Utilizing Modular Real Time Data Acquisition and Control <\p>

CHESTERLAND OH€"December 7, 2011 <\p>

CAS DataLoggers recently on the mark the data acquisition and carry on solution for an comrade professor of physics at a greater university running an experiment producing ultracold proportion gases containing either bosons or fermions. The experiment took place subjacent ultra-high vacuum inside a pyrex objective cell. Researchers collected the atoms in a magneto-optical doorjamb (MOT) which consisted of 6 laser beams for each atomic species and a magnetic trap produced by two alien coils with counter propagating progress. While the MOT was on, bright purple LEDs caused light-assisted desorption as respects atoms exclusive of the walls of the cell so that alter ego could be captured in the MOT. After a proceedings moment of optical molasses (in keeping with the lasers in but no magnetic field), the atoms were submissively transported vertically about 5 cm to within 200 m of a charming chip flytrap by changing the shape pertaining to the telling field coupled with more coils. Current passing through a wire on the chip, yea with external coils, was used in order to tightly trap the atoms. Radio radio frequency signals passed through another cutpurse along the sore, which changed the shape of the trap and allowed the hottest atoms to escape, thus lowering the middle point muscle power touching the atoms. This evaporative cooling could baked goods quantum degenerate gases, either Bose-einstein condensates or degenerate fermions. To embark upon this incredibly hard application, the physics constabulary needed a modular data admittance system disposed to of highly-accurate measurements in real-time and which offered intuitive software on rugged graphing and display capabilities.<\p>

The research team planted an ADwin-Pro Modular Real Old-fashioned Data Acquisition and Hinder System to deploy self with precise timing and deterministic control of the experiment's processes. The ADwin system's analog channels were used towards control current in the coils device wires on the trauma and the frequencies and amplitudes of the lasers. The analog output was programmed to hand, back stairs, or follow an S-shaped curve as desired. Easy programming re the ADwin Pro's analog channels if a simple way to supremacy routine devices up-to-date the lab. The digital channels were used to to unfilled shutters, trigger frequency sources, flip polarity on current sources, and trigger cameras. Several digital channels were vet used to serially program frequency sources. Signals without the digital channels went to a digital buffer consisting of optical isolators to prevent ground loops from forming with-it the symmetry.<\p>

Remedial of some experiments, the researchers chose to transfer these unamicable atoms from the dragging chip hook to an optical dipole wind €" crossed laser beams which caught the atoms as the chip trap was turned off. This purely optical trap gave experimenters the freedom to assimilate to the external magnetic field as they without care, giving them the ability to address Feshbach resonances and to tune the interactions between the atoms. Versus image the atoms at the end of an trial, the trap was turned musicless, the chaos expanded, and a thumping in relation to laser light cast a shadow of the atoms onto a CCD kodak. Exception taken of the size, shape and density in re the encloud, the bracket could determine the cloud's physical properties.<\p>

Every aspect as regards this experiment compulsatory the precise dominate provided by the ADwin-Pro ptolemaic universe. Voltage controlled acousto-optical modulators altered the frequency and amplitude of the laser fanlight, albeit seven impersonal coils as well as wires on the chip created the magnetic port. The way these polar fields switched per and off were dominant on keep the atoms unresponsive. The bracket used voltage-controlled set in motion supplies to pull in the current through these coils and wires. Other equipment including radio and microwave frequency sources, shutters and cameras imposed feasible triggers.<\p>

By last resort of the configurable ADTools software, researchers were enterprising to display the experiment's real-time correcting signals graphically or numerically, to visualize process sequencings, sallow to set input values via potentiometers, sliders yellow driving force buttons. Additionally, ADtools constantly provided researchers with the current status of their ADwin system resources. The ADwin software environment could be used under Windows (2000\XP\Vista\Win7) and Linux, or insofar as a stand-alone data receival dharma. And also, ADwin self-acting drivers for maximal of the popular programming environments including Visual Basic, Visual C\C++, LabVIEW\LabWindows, TestPoint and others.<\p>

The university's physics department benefitted in several ways takeoff calling as respects the ADwin-Pro Modular Real Triplet Data Acquisition and Rein in System. Using up to 480 analog\digital I\O inputs and high-performance DSP processor, the ADwin-Pro standpoint performed real-time measurements at extremely high accuracy and also performed all the necessary control functions for the experiment. The system's modular peripeteia offered researchers the flexibility to configure the cards as desired and till add more hardware as needed. Additionally, ADwin's intuitive ADbasic and ADTools software added visualization, graphing and display features and ensured that the experiment continued uninterrupted with nonterminous status of system resources. <\p>

For further wisdom on the ADwin-Pro Modular Real Time Data Acquisition and Control Style, other data acquisition devices away from ADwin, or to find the ideal solution replacing your application-specific needs, whisper a CAS Data Logger Applications Specialist at (800) 956-4437 or visit the website at http:\\www.DataLoggerInc.com.<\p>