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AMO End Stations

LAMP Multipurpose End-Station

Lamp multipurpose end-station

 

 

LAMP is a multipurpose instrumental end-station based on the highly successful previous generation CAMP chamber. It houses two megapixel X-ray sensor planes compatible with 120 Hz frame rate data aquisition. It has been designed to be deployed at the LCLS soft X-ray end-stations (AMO/SXR) and supports a wide variety of instrumentation including spectrometers, laser in-coupling systems, gas and cluster atomic and molecular sources, in-vacuum manipulator devices and vacuum diagnostics. This instrument has been designed to support a wide array of experimental conditions including imaging, spectroscopy and multi-beam experiments.

Ion and electron spectrometers

The two large-area (78 x 74 mm2) 1 Megapixel pnCCD detectors (75 x 75 µm2 pixel size) sensor planes are capable of counting single scattered or fluorescent photons with high quantum efficiency (> 90%) with an energy resolution of 40 to 200 eV between < 100 eV and 25 keV. A variable-sized hole in the center of the first CCD allows the direct FEL beam (and a high-power pump laser, if applicable) to pass through the detector, while the small-angle scattering signal within the area of the hole can be detected on the second CCD, which has a fixed-sized hole for the direct FEL beam. Both sensors can be operated in high resolution imaging or spectrometer mode, and are capable of sub-pixel resolution in sparse data through the use of clustering algorithms to the electron-hole silicon diffusion cloud.

Specially-designed ion and electron spectrometers (VMI, Delay anode positioning spectrometers and a conical lens full solid angle collection electron and ion specrometer) detect ions and/or electrons created in the interaction region within a large solid angle and allow measuring their kinetic energies and emission directions, while still providing an unrestricted line-of-sight from the interaction region to the pnCCD detectors. In order to account for different operation modes, the charged particle spectrometers are equipped with a delay-line anode for single particle detection as well as a phosphor screen/CCD camera for applications where several hundred or thousand electrons or ions are created by each FEL pulse. The unique combination of large-area, single-photon counting pnCCD detectors and advanced charged particle spectrometers thus allows measuring fluorescent or scattered photons in coincidence with ions and/or electrons.

SLAC LAMP with conical lens ion/electron spectrometer

Additionally, the end station is suitable for coherent diffractive imaging experiments on biological and other targets and is therefore constructed in a highly modular design: the charged particle spectrometers can be easily removed and various other types of detection devices and spectrometers, (supersonic) gas and cluster-jets, droplet-jets, aerodynamic lenses as well as fixed targets can be inserted. Several ports for optical lasers are also provided.

AMO Pages INDEX

  1. Overview
  2. Specifications
  3. Schematic
  4. End Stations
  5. Components
  6. Standard Configurations
  7. Publications

AMO CONTACT INFO

 Peter Walter

SXD Instrument Scientist
(650) 926-3997
pwalter@slac.stanford.edu

Stefan Moeller

SXD Instrument Scientist
(650) 926-5321
smoeller@slac.stanford.edu

Jeff Aldrich

Area Manager
(650) 926-3895
jaldrich@slac.stanford.edu

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AMO Control Room

(650) 926-6260
(650) 926-6261
(650) 926-6265
(650) 926-6266

AMO LOCATION

AMO location
Near Experimental Hall (NEH), Hutch 1
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