Transcript Atomic Physics End-Station

Atomic Physics End-Station
Experimental plans
End-station capabilities
Outstanding issues
Future plans and status
AMO Science = Atomic Physics
October 12, 2006
FAC Review - AMO Status
1
John D. Bozek
[email protected]
AMO Experimental Plans
Capitalize on unique nature of LCLS light to
study interaction with simples forms of
matter – atoms, molecules & clusters
1013 ph/pulse
Pulse duration ~200fsec
800-2000 eV for soft x-ray branch
▼Chaotic pulses
▼Poor
synchronization
October 12, 2006
FAC Review - AMO Status
2
John D. Bozek
[email protected]
AMO Experimental Plans
High Field Physics end-station to study
photo-ionization of atoms, molecules,
clusters:
Focus beam to ~1mm2
Pulsed gas jet
Electron spectrometers (5)
Ion spectrometers (3)
X-ray fluorescence spectrometers (2)
October 12, 2006
FAC Review - AMO Status
3
John D. Bozek
[email protected]
AMO Plans – refocus optics
Need adaptive optics to change spot size
(control power), move focus ~1m
Ideally two sets of optics – for 1μm focus and
<100nm focus
October 12, 2006
FAC Review - AMO Status
4
John D. Bozek
[email protected]
AMO Plans – Ion Spectrometers
Very first experiment – look at charge state
distribution
●Simple TOF spectrometer at first
●Then want to get more
sophisticated and use momentum
imaging, either with integrating
detector (i.e. velocity map imaging)
or time & position sensitive detector
(i.e. reaction microscope/ColTRIMS)
October 12, 2006
FAC Review - AMO Status
5
John D. Bozek
[email protected]
AMO Plans – Electron Spectrometers
Greater insight using more discriminating
technique – angle-resolved PES
Pulsed beam ideally suited to time-of-flight
100.00
Acceptance (%)
80.00
60.00
40.00
20.00
0.00
500
501
502
503
504
505
506
507
508
509
510
511
512
Initial energy (eV)
L:175mm D:15mm
October 12, 2006
FAC Review - AMO Status
6
L: 175mm D:20mm
L:82mm D15mm
John D. Bozek
[email protected]
513
514
515
AMO Plans – Fluorescence Spectrometers
X-ray emission from highly excited/ionized
sample will interrogate different electronic
states
October 12, 2006
FAC Review - AMO Status
7
John D. Bozek
[email protected]
AMO Plans – Laser systems
Want to use synchronized laser to initiate
temporally resolved studies
October 12, 2006
FAC Review - AMO Status
8
John D. Bozek
[email protected]
AMO Plans – need for diagnostics
Large pulse-to-pulse
variations
Transparent target – can
use downstream beam to
measure properties:
Power
Bandwidth
X-correlation with laser
Etc…
October 12, 2006
FAC Review - AMO Status
9
John D. Bozek
[email protected]
AMO Plans – high field physics
October 12, 2006
FAC Review - AMO Status
10
John D. Bozek
[email protected]
AMO Plans – hutch layout
●Room for three experiments in the first two hutches
●Space to install monochromator for future needs
October 12, 2006
FAC Review - AMO Status
11
John D. Bozek
[email protected]