Hemispherical energy analyser EA15-HP5

Description

The analyser is equipped with a total number of 11 slits and 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.

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-HP1 hemispherical energy analyser is recommended in order to minimalize influence of external magnetic fields and to maximize performance of the analyser.

Package includes:

▪ EA15-HP5 150 mm hemispherical energy analyser,
▪ RUDI-EA2 high stable and low noise electronics,
▪ SPECTRIUM acquisition and analyser control software for Windows OS computer system,
▪ computer set.

Technical data

Mounting flange	DN 100 CF
Bakeout temperature	up to 120 °C
Working distance	1-2 mm (dependent on cone opening)
Analyser mean radius	150 mm
Pass energies XPS XPS/UPS & XPS/UPS/ARPES*	20, 50, 100, 200 eV 1, 2, 5, 10, 20, 50, 100, 200 eV
Energy resolution XPS XPS/UPS & XPS/UPS/ARPES*	< 20 meV FWHM < 3 meV FWHM
Kinetic energy range	0.5 – 3000 eV
Acquisition modes	fixed, scan
Transmission and angular lens mode: ▫ lens acceptance angle (transmission mode)	+/- 15°
IRIS aperture	from 1 mm to 32 mm
Completely designed of non-magnetic materials

Detectors

• MCP-CCD detector
– 40 mm diameter dual MCP detector
– 656 energy channels available simultanously
– 494 angular channels available simultanously
– 90 fps
• 7-MCD detector (for UHV)
• Detektor DLD (for UHV)
– Maximum energy window in fixed mode: ~17% of pass energy
– 56 mm diameter detector with 7 channeltrons
– Applied voltage: 2.5-3.5 kV

Options

Pumping system for EA15-HP5
3 stages pumping system with all necessary pumps, pressure measurement system and accessories which enables analyser to work in requested pressure range (from UHV up to 5 mbar). System consists of:

1st stage of pumping system for analyser (lens)
HiPace 300 turbo molecular pump (pumping speed is 260 l/s for N₂)
VAT Gate Valve DN 100CF – el-pneumatic for TMP pump
nXDS6i Edwards forevacuum dry pump (nominal pumping speed of 6 m3/h)
Tubing and wiring,
Automatic safety valve and vent valve,
2nd stage of pumping system for analyser (lens)
HiPace 300 turbo molecular pump (pumping speed is 260 l/s for N₂)
VAT Gate Valve DN 100CF – el-pneumatic for TMP pump
Automatic safety valve and vent valve,
3rd stage of pumping system for analyser (hemisphere)
HiPace 300 turbo molecular pump (pumping speed is 260 l/s for N₂) with reducer
VAT Gate Valve DN 63CF – el-pneumatic for TMP pump
nXDS6i Edwards forevacuum dry pump (nominal pumping speed of 6 m3/h)
Tubing and wiring,
Automatic safety valve and vent valve,
Vacuum gauges
3x Pirani gauge TTR91N for fore vacuum,
3x PTR90N – wide range gauge
Electronic microprocessor device to control pumping system (forevacuum pumps, UHV-pumps, valves and vacuum gauges). Unit includes several interlocks to protect the vacuum system during power failure or in the case of breakdown of its components.
Bypass between analytical chamber and analyser: tubing and safety valve