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Beamline Description | TARDI spectrometer | Focusing KB | Electromagnet endstation | RIXS endstation Detectors | SLU

Here below we describe one simple transport configuration of the Seed Laser for Users (SLU) at MAGNEDYN beamline. 
With the use of this set-up the 800 nm SLU pulses can both pump (see below for details) or probe the sample. 

For simplicity the set-up is divided into 3 parts plus a "probe" board: 
* SLU-U ("up"): here the SLU enters the board and it's inter-locked by a safety shutter;
* SLU-D ("delay"): composed by a delay stage, an auto-correlator for a pulse-to-pulse check of the pulses time-duration and a set of motorized optical elements to control the intensity and the polarization state of the SLU pulses.
* SLU-F ("focus"): where the pulses are focussed on the sample and we record both the position and intensity.
* SLU-P ("probe"): where the pulses, reflected or transmitted by the sample, are collected and both their intensity and polarization state is detected. Please note that this is a separate board.

SLU pump- FEL probe:
* Spot size SLU: '''200 - 400 um'''.
* Pulse energy SLU: '''30 nJ (= 1.5 uW @ 50 Hz) - 100 uJ'''.
* Assuming spot size of 200 um, the energy density for SLU: '''0.1 - 320 mJ/cm'^2^''''.
* SLU wavelength: 800 nm.
* SLU polarization: any.
* Spot size FEL: 5- 100 um.
SLU probe - FEL pump:
* Spot size SLU: '''20 - 200 um'''.
* Pulse energy SLU: '''0.3 - 3 nJ''' < 300 nJ.  
* Assuming spot size of 50 um, the energy density for SLU: '''0.015 - 1 mJ/cm'^2^''''.
* SLU wavelength: 800 nm.
* SLU polarization: linear or circular.
* Spot size FEL: 50- 400 um.
Last Updated on Monday, 11 November 2019 11:50