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Synchrotron/Neutron/Fusion » Synchrotron » High Precision Slits » Custom Slits » Custom Monochromatic UHV Slits BL02B at SSRF
Custom Monochromatic UHV Slits BL02B at SSRF

 

This slit system designed for BL02B at SSRF in China consists of two copies of a reversible slit (new standard product SLT-610-250) and two horizontal linear translation stages (DS-400-50 stages).  The slits are reversible to allow for the required 400 mm spacing between the x-ray beams where the slits will be installed.  Each slit contains four electrically isolated tantalum blades moved independently by four of ADC’s rugged external actuators originally developed in a project for MAX IV in Sweden.  The blade monitoring wires run through the support structure holding each blade and up to a BNC connection near the top of the actuator. 

 

 

Specifications

Actuator Travel

25

mm

Actuator Resolution

0.1

μm

Motion Axes

4

 

Aperture Maximum

25 x 25

mm

Aperture Minimum

20 x 20 Overlap

mm

Encoder Resolution

0.02

μm

Mass

90

kg

 

 

Some important features of the system include:

  • No flexing wires in vacuum, minimal flexing wires in general
  • Rugged actuators external to vacuum
  • Sturdy structures
  • Blades and actuators are easily removed from chamber without removing chamber from beamline
  • Reversible beam direction for versatility in space constraints
  • High-precision encoded motion
  • Electrically isolated blades with beam monitoring connections
  • Blades can overlap significantly without collision
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