EA15 HEMISPHERICAL ENERGY ANALYSER

Product DESCRIPTION

PREVAC EA15 hemispherical energy analyser provides high-resolution photoelectron spectroscopy measurements with a 150 mm mean radius analyser.

The analyser is wrapped in a shield constructed of up to two parallel mu-metal plates guaranteeing adequate analysis conditions for low-and high-energy photoelectrons.

Equipped with a total number of 11 slits, the analyser offers the possibility to choose between best energy resolution and best intensity. According to given photoelectron energy the analyser is set up with up to 8 predefined PE to satisfy customer's requirements.

Detectors

•  MCP-CCD detector

    - 40 mm diameter dual MCP detector  

    - 656 energy channels available simultaneously

    - 494 angular channels available simultaneously

    - 90 fps

•  7-MCD detector

•  DLD detector (on request)

The PREVAC analyser package includes:

▪ EA15 150 mm hemispherical energy analyser

▪ RUDI-EA2 high stable and low noise electronics

▪ SPECTRIUM acquisition and analyser control software for Windows OS computer system.

Additional information

EA15 hemispherical energy analyser can be controlled directly by LabVIEW programming environment.

Note:

The use of a mu-metal analysis vacuum chamber or an inner mu-metal shielded chamber in combination with PREVAC EA15 hemispherical energy analyser is recommended in order to minimalize influence of external magnetic fields and to maximize performance of the analyser.

Research Unit Digital Instrument RUDI-EA2

Novel, modular high voltage power supply for photoemission and other demanding research applications.

The electronics features fully calibrated, independently operating modules utilising the very latest electronics and software technology. Voltage supplies are controlled by high precision 16-bit digital-to-analog converters with high linearity and extremely high temperature stability. Automatic low and high voltage range settings, as well as output polarity, are under full user control.

The combined high specification and system flexibility makes RUDI-EA2 the obvious choice for many analysis applications, where stable, high voltage supplies are required and can also be readily configured by the end user.

Each RUDI-EA2 unit is supplied with a comprehensive serial communication protocol description which can be easily implemented for individual control needs, thus removing the reliance on specific, often prohibitive supplier software.

As the demand for smarter, connected technologies increases, PREVAC provides the best in class electronic solutions. The electronic mainboard of the RUDI-EA2 system is a showcase for the best in active digital and analog electronic components currently on the market.

Features:

▪ Special techniques have been used to achieve rapid temperature stabilization. The system is ready for use after only 3 minutes from switch on.

▪ Each independent voltage module achieves temperature stability below 0.5 ppm of the voltage span per degree Celsius.

▪ Using 16bit AD converters, the 6 kV power supplies can be set with a resolution of just 92 mV and with a maximum noise level of only 200 µVp-p.

▪ Each module can be controlled independently via MODBUS-TCP 460 Kbit/s wire interface.

▪ Each module has a floating output which means a wide range of configurations are possible making the unit truly universal - serial configuration is unlimited.

▪ Any other voltages up to 6000 V available on request

▪ High linearity controlled with an accuracy of 16 bits

▪ Up to 28 modules fit into 9U rack

▪ Voltage deviation calculated with two-point calibration at min and max voltage

Spectrium

Spectrium is a control and data acquisition software dedicated to EA15 class analysers.

Spectrium, based on the latest developments in techniques and signal processing, is a progressive and optimized software tool for data acquisition and analytical instruments controlling, with very intuitive graphical interface.

Spectrium offers the possibility to define single independent regions as well as grouping them in sequences. Also nesting sequences in major sequences is supported. Measurements can be done in Fixed and Scan mode and in both cases while processing, measurement tools and FWHM display are available. In addition, not only a real-time view of the detector image in 3D as well as energy graph, but also a graph of the 2D detector image and the possibility to filter a chosen intensity range are at the user's disposal.

Intensity graph is shown along geometry axis. In order to guarantee compatibility to existing software, data export to TXT, HDF5 and CasaXPS is available by default.

▪ Imaging, mapping & depth profiling

  Spectrium is offering a package of pre-defined macros for easy experimental setup of these techniques

▪ Components control

  Software control of X-ray source, UV source, flood source, Ion source and manipulator

▪ Interactive scan control

  Software design has been optimized for more efficient workflow, resulting in a streamlined and simpler design. The control module is interactive and dynamic allowing adaptation of parameters to customer’s needs

▪ High quality spectra

  User can use the Spectrium software for many experimental techniques for any research. It can measure high quality spectra

▪ Direct export to CasaXPS

  Possibility to directly export whole recipe data to CasaXPS with one click

▪ Integration with TANGO and other control systems

▪ Integration with LabView examples

▪ Advance Access Levels Management

  Provide limited access to particular features for analyzer's setup and control for specified user groups according to their knowledge

▪ Multiple detector support

  The software is able to acquire data from MCP/CCD, Channeltron and Delayline type detectors

▪ Configurable device window

▪ Multiple views

▪ Saving user window configuration

Requirements:

Windows 7/8/10, 64 bits, Intel i5 2.6 Hz or equiv., 8 GB RAM, 500 GB HD, one 21” screen with

at least 1280 x 1024 pixels recommended.