IBEX Concept Study Site Visit

1
IBEX-Hi Energy Analysis Subsystem

• Energy Analysis Subsystem Purpose
• Select positive ion energy range
• Reject background UV, neg. ions, electrons
• Fold optics to reduce detector size
• Energy selection
• 6 energy channels with broad ?E/E

Inner prototype plate
Ion optical properties have been modeled and
validated with prototype.
2
IBEX-Hi Energy Analysis Subsystem
Ion optical properties have been modeled and
validated with prototype.
3
IBEX-Hi Energy Detector Subsystem

• TOF/Detector subsystem Purpose
• High detection efficiency but high background
  suppression
• Coincidence determination
• CEMs for low noise off-axis clocking
• Two foils, three stacked detector chambers
• Double and triple coincidences recorded

4
Prototype Design and Fabrication
Electro-optic simulation
Prototype Design Fab
Prototype Testing
5
Prototype Testing

• Ion optics and neutral-to-ion conversion
  verification
• Energy passbands and energy resolution
• Double and triple coincidences
• Detector backgrounds

Double and triple coincidences for the A, B, and
C detectors
Energy response and energy resolution verified
Prototype testing verified electro-optical
simulations and performance of each subsystem.
6
Geometric Factor
IBEX-Hi team understands and will fulfill all
requirements in support of IBEX mission.
7
IBEX-Hi Noise and Backgrounds
Coincidence subsystem designed for high detection
efficiency and high background suppression.
8
IBEX-Hi Signal-to-Noise
9
IBEX-Hi Summary

• IBEX-Hi carefully designed to fully satisfy all
  IBEX science requirements
• Sensors major subsystems successfully prototyped
  and performance verified
• Current priority design optimization for on
  maximizing S/N

The team has the experience, knowledge, and
facilities to make IBEX a success.