The ICE (Ions in Coincidence with Electrons) end station is a mobile end station that is designed to be compatible with a number of MAX IV LDM-relevant beamlines. By using a combination of multi-coincidence and momentum imaging techniques along with the linearly/circularly/elliptically polarized soft x-rays delivered by the beamlines, it will be possible to investigate photo-induced reactions and to obtain kinematic information on specific dissociation channels of gas phase molecules and clusters – affording insight into the interplay between competing decay processes, the role of nuclear motion in a decay process, charge transfer processes and the relevant time-scales involved.

The ICE REMI (REaction MIcroscope) is available for general users in the Fall 2022 call.

Single-bunch operation: There will be a 1 week of single-bunch operation in the period September 2022 – February 2023. When applying for a beamtime with single-bunch operation, indicate this clearly in your beamtime proposal. For more information please contact Noelle Walsh ().

Experimental chamber

Geometry & materialsCAMP – type vacuum chamber
316LN ESR stainless steel
Base pressure5⋅10-9-1⋅10-8mbar
Compatible sample delivery systemsExternal: Molecular Jet/Cluster source (refer to 'LDM Sample Delivery Systems' for more information)
Beam size at sample
(at FlexPES)
Defocused (h x v): up to 2 x 1.5 mm
Focused (h x v): 75 x 15 μm; further reduction in size is possible with baffles (at the cost of flux)
Compatible beamlinesFlexPES (current). Future options: Veritas, FinEstBeAMS.
ICE spectrometersREMI: Reaction Microscope spectrometer (see below for further details)

 

REMI spectrometer

Max operating pressure1⋅10-6mbar
DescriptionRoentDek spectrometer
Adjustable in length and electrostatic field geometry
Maximum length: 1 m.
Current length: 1m
ModesCOLTRIMS
- Requires single-bunch mode;
- Static E-fields : a few V/cm
- B-field (with Helmholtz coils): see below
High field/lens mode (available for Fall 2022)
- Single Bunch/Multi-bunch mode;
- Static E-fields : some 100’s V/cm
- no B field
Max KE’s anticipated by manufacturer (dependent on geometry of spectrometer) RIMS
- Electrons: 100 eV
- Ions: at least 20 eV
High field mode
- Electrons: 15 eV
- Ions (+1 or -1): 10 eV
KE's measured with current setupinformation will be updated shortly
Magnetic FieldHelmholtz coils (uncooled)
Maximum recommended B-field : 0.5 mT (higher B fields can be generated with the coils)
Detectors2 x HEX 100 – 75 detectors (100 mm HEX delay lines and 75 mm MCP’s OAR 70%)
Electronics8-channel fast timing amplifier unit for detector signals, FAMP 8
fADC4/10-4: 10-bit flash ADC system for advanced multi-hit readout of HEX detectors (with PC via PCIe) and associated software
Control Software

Cobold PC

TANGO for TIY scans etc
Data format.lmf
HDF5 xyt format
ASCII
Compatible BL’sFlexPES. Future options: FinEstBeAMS, Veritas