S4 — Ioncatcher Degrader System
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Updated May 6th, 2022.
The ioncatcher degrader consists of:
- two ladders (GHFSEM1GL from below and GHFSEM1GR from top) for fixed plates,
- a double wedge vor variable thickness (GHFSED4 from below and GHFSED5 from top)
- two wedge shaped disks for variable angle (drive in / out = GTS3ED7DP), rotation still on extra controller .
Sorry, the two wedge-shaped plates and the two wedge-shaped disks are not yet integrated into the online calculator, use
EXCEL sheet
instead.
The key parts are:
On ladders:
2018 wedge-shaped plates from Hallstein&Heyl (
AlMg3 rho = 2670 mg/cm
3):
- 2 to 8 mm Al wedge "Keil-2": slope = 0.01691, deviaton from plane sigma_z = 30 um
- 2 to 18 mm Al wedge "Keil-2": slope = 0.01750, deviation from plane sigma_z = 6.2 um
- 1.5 mm Ta plate
- 3.0 mm Ta plate
Double wedge:
2012 ion catcher degrader plates:
- plate 1 (from Kugler): slope = 39.94 mg/cm3, central thickness= 1164 mg/cm2
- plate 2 (from Kugler): slope = 40.02 mg/cm3, central thickness= 1158 mg/cm2
Wedge-shaped disks:
2012 ion catcher degrader disks:
- disk 1 (new from ESS): slope = 24.62 mg/cm3, center thickness= 482.2 mg/cm2
- disk 2 ( from Kugler): slope = 24.68 mg/cm3, center thickness= 510.0 mg/cm2
Picture of Hallstein&Heyl plate from 2018 with dimensions:
Picture of S4 degrader drives from 2012:
Picture of S4 degrader ladders mounted in beam Nov 2019:
Picture of disk controller Nov 2019 in front of gate to S4:
How to use:
- Switch on (on back side)
- starts in standby, press button [standby] (wait ~ 1min)
- select [Home] in menue on screen
- select axis-number = 0
- select "absolut" motion
- enter new value with number keys and press [valid]
- press [exec]
Degrader Calculator
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SagarRoy - 2021-06-26