X-ray Source RS 40B1

High intensity twin anode Al/Mg source optimized for XPS and high pressure XPS experiments.



Prevac are a world leader in the design and production of analytical and deposit scientific and research equipment. Their systems operate in a high and ultra high vacuum environment. They design and construct UHV and HV systems fully adapted to the individual requirements of research projects and industrial applications.

Key Features

  • High intensity twin anode Al / Mg
  • Specially configured nose cone
  • Very low cross-talk
  • Low magnetic field
  • Hermetically sealed housing
  • Efficient water-cooled inner housing in order to reduce thermal damage to the sample during operation
  • In-built double high voltage protection together with hermetically sealed housing
  • Able to work in high pressure experiments in the mbar range (option)
  • Able to work under full control with limited water flow


Design of the anode, filament and source housing guarantees maximum X-Ray intensity and very low crosstalk between the anode faces. A specially configured nose cone allows maximum access to the sample. Twin anode used in standard source, allows for separated emission of two different characteristic X-radiation emission lines: Mg (1253 eV), Al (1487 eV) – other coating materials on request.

Technical data

Mounting flange DN 40CF (non-rotatable)
Anode Al/Mg (other materials on request)
Power Al 600 W / Mg 400 W
Energy range 7 – 15 keV
Cathode current (Icath) up to 2.5 A
Emission current range (Ie) 0 – 50 mA
Cross talk < 0.35 %
Magnetic field at sample below 0.5 μT
Increased sample temperature < 5 °C
Cathode type thoriated tungsten
Water cooling required, pressure 3.5 – 5 bar (max. 6 bar), flow ≥ 2.5 l/min., Tmax = 30 °C
Insertion length 285 mm; OD: 35 mm
FWHM dependent on working distance (e.g. 30 mm for distance 15 mm)
Typical working distance 5 – 30 mm (optimum 15 mm)
Bakeout temperature up to 250 °C
Working pressure < 5 x 10-6 mbar



Instruments with Electronics Brochure

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  • HP version, up to 20 mbar

  • Linear shift with tilt 50 – 100 mm (for HP X-ray source equipped with additional pumping port)

  • Chiller

Service Support

Comprehensive repairs and servicing

Annual Support Programs

Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.

CN Tech’s Support Programs are an economical way to guarantee optimal working condition:

  • Annual Preventive Maintenance
  • Priority Technical Assistance
  • Preferred Parts Availability
  • On-Site User Training
  • Remote Diagnostics
  • No surprise repair expense and much more!

Support Contact Example

An example of our service and support contracts are shown below:


Metrology & Instrumentation Annual Support Programs 2022/23

CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

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