Joint instrumentation tests Jan Grünert (S. Molodtsov) X-ray Beam Diagnostics Group European XFEL,...
If you can't read please download the document
Joint instrumentation tests Jan Grünert (S. Molodtsov) X-ray Beam Diagnostics Group European XFEL, Hamburg, Germany 3-site meeting, SLAC, February 2013
Joint instrumentation tests Jan Grnert (S. Molodtsov) X-ray
Beam Diagnostics Group European XFEL, Hamburg, Germany 3-site
meeting, SLAC, February 2013
Slide 2
X-ray photon diagnostics Joint instrumentation tests Devices
currently under development at European XFEL and interesting for
joint instrumentation tests: Photoelectron spectrometer for
spectrum & polarisation monitoring XGMD/XBPM gas-based
intensity and beam position monitoring MCP-based detector Diamond
detectors for intensity and beam position monitoring Imagers /
scintillators Backscatter monitors Planned developments,
interesting for joint instrumentation tests: Transmissive
high-resolution single shot spectrometer Temporal Diagnostics (from
10Hz to MHz rates) THz streaking as pulse duration monitor Spectral
encoding (at MHz rep rates) Other MHz-capable temporal diagnostics
ideas 2 Jan Grnert, WP74, European XFEL 3-site meeting, SLAC,
February 2013 discussed elsewhere
Slide 3
X-ray photon diagnostics Diamond detectors 3 Jan Grnert, WP74,
European XFEL Intensity (I0) and Position (PSD) Best thermal
properties Radiation hard Potential stable semi-transparent
monitors, but commercially not available as required for European
XFEL front electrodes back electrode diamond slice Non-standard
geometry of contacts (to be compatible with XFEL radiation): To
study at LCLS: Carrier dynamics Linearity for the high pulse
intensities of an XFEL Charge cloud importance Damage mechanisms
3-site meeting, SLAC, February 2013
Slide 4
X-ray photon diagnostics Diamond detectors 4 Jan Grnert, WP74,
European XFEL 3-site meeting, SLAC, February 2013 Ref: M.Pomorski
et al., Phys. Status Solidi A 206, No. 9, 21092114 (2009) / DOI
10.1002/pssa.200982229 photon Diamond Detectors for the European
XFEL duolateral geometry First prototype + electronics tested at
synchrotron Detect hard X-ray intensity + position Diamond
thickness ~50 300m
Slide 5
X-ray photon diagnostics 5 Jan Grnert, WP74, European XFEL
3-site meeting, SLAC, February 2013 Mechanical Setup of Prototype
Single crystal CVD Diamond DLC layer with Al electrodes Thickness:
300m Active area: 3.6mm x3.6mm UHV compatible design fits through a
38mm ID tube Bias and readout Diamond Ceramic baseplate X1 Y2 Y1
X2
Slide 6
X-ray photon diagnostics Joint instrumentation tests Imagers 6
Jan Grnert, WP74, European XFEL 3-site meeting, SLAC, February 2013
Imagers Study saturation effects in diamond vs. YAG Help to improve
LCLS imagers (also in view of LCLS-II) Commercial sCMOS chip camera
Requirements: Frame rate > 10fps Dynamic range > 65dB Low
noise External trigger h/w and s/w compatibility with
DAQ&Control system Lens System Large format lens design with
extended depth-of-field & short working distance 2 different
field-of-views (SR and FEL) High numerical aperture for SR Linear
Manipulator for scintillator retraction Scintillator Holder
Slide 7
X-ray photon diagnostics Transmissive Imager 7 Jan Grnert,
WP74, European XFEL Transmissive mirror T=50% at >5keV 3-site
meeting, SLAC, February 2013
Slide 8
X-ray photon diagnostics Joint instrumentation tests BSM 8 Jan
Grnert, WP74, European XFEL 3-site meeting, SLAC, February 2013
Backscatter Monitors (BSM) Study linearity effects Evaluate
different diamond foils Improved electronics / readout Version with
2 sets of photodiodes for low and high intensity (extend dynamic
range) Help to improve LCLS BSMs (also in view of LCLS-II) Z
Slide 9
X-ray photon diagnostics Joint instrumentation tests
Spectrometer 9 Jan Grnert, WP74, European XFEL 3-site meeting,
SLAC, February 2013 Ref: Christian DAVID, Paul Scherrer Institute
Transmissive Hard X-ray High-Resolution Single-Shot Spectrometer
Based on LCLS bent-crystal spectrometer, further improved: MHz
rates Minimally-invasive Extends LCLS-type spectrometer capability,
e.g. energy range LCLS beamtime proposal is submitted as well
Slide 10
X-ray photon diagnostics 10 Jan Grnert, WP74, European XFEL
more advanced diagnostics Wavefront analyzer Grating Interferometer
with C.David group @ PSI: already completed successful first user
experiment at XPP@LCLS in 2011, could plan for joint tests of
instrumentation for different photon energies phasing with
transmissive screens is an ongoing joint development effort with
A.Mancuso ([email protected]) & G.Williams (CXI@LCLS) Temporal
properties Ongoing collaboration in scientific beamtimes with Ryan
Coffee pump-probe delay (= arrival time): spectral encoding pulse
duration: THz streaking Development of XFEL.EU instrumentation is
starting, extension to MHz rates will be crucial at least for
arrival time monitor, new ideas could be tested as a joint
instrumentation effort Source: David / PSI 3-site meeting, SLAC,
February 2013
Slide 11
X-ray photon diagnostics additional slides 11 Jan Grnert, WP74,
European XFEL 3-site meeting, SLAC, February 2013
Slide 12
X-ray photon diagnostics 12 Jan Grnert, WP74, European XFEL
Undulator commissioning spectrometer Design by Wolfgang Freund,
WP74 K-monochromator in view of the future variable gap undulators,
our flexible K-mono could be of interesting for LCLS-II a test at
LCLS-I might be less interesting due to the limited K-tuning
possibility and the canting of undulators (need to study) 3-site
meeting, SLAC, February 2013
Slide 13
X-ray photon diagnostics European XFEL photon diagnostic
information 13 Jan Grnert, WP74, European XFEL Baseline absolute
calibrated pulse intensity shot-to-shot (relative) pulse intensity
and beam centroid position shot-to-shot central wavelength,
spectral width, degree and orientation of linear polarization
offline images (transverse beam position and 2D profile) of
spontaneous and FEL radiation offline spontaneous radiation
spectrum and transverse profile for individual or pairs of
undulator segments Advanced single-shot full high-res. spectrum
pulse arrival time and pulse duration single-shot wavefront
coherence... E T 3-site meeting, SLAC, February 2013
Slide 14
X-ray photon diagnostics 14 Jan Grnert, WP74, European XFEL
online invasive gas-based Symbols & Devices E E T T XBPM XGMD
Transmissive Imager Temporal Diagnostics Polarization Monitor PES
Diamond I 0 -monitor Diamond PSD Backscattering Monitor PSD E-MCP
2D Imager Temporal Diagnostics Polarization Detector HR Single-Shot
Spectrometer Wavefront Sensor K-Monochromator E 3-site meeting,
SLAC, February 2013
Slide 15
X-ray photon diagnostics 15 Jan Grnert, WP74, European XFEL
Shot-to-shot pulse intensity (XGMD) ETP-14880 and ETP-14882
FLASH-GMD in 2009 first section of XGMD for the XFEL.EU provided by
K.Tiedtke group / DESY 3-site meeting, SLAC, February 2013
Slide 16
X-ray photon diagnostics Photoelectron Spectrometer 16 Jan
Grnert, WP74, European XFEL 3-site meeting, SLAC, February 2013
Illustration of a PES equipped with 4 flight tubes, source :
M.Planas / J. Buck (WP74)
Slide 17
X-ray photon diagnostics 17 Jan Grnert, WP74, European XFEL
MCP-based detector Find and tune SASE MCP pulse energy meter
single-pulse detection 1 nJ to 20 mJ rel. accuracy better than 1%
MCP imager 2D photon beam image spatial resolution 30 m IKC
contract with JINR/Dubna XFEL beam at European XFEL (07/2012)
tested at DORIS BW1 (10/2012) For this device it would be most
interesting to study for intense short pulses and high intensities
(= with LCLS hard X-rays) the MCP efficiency the damage
threshold
Slide 18
X-ray photon diagnostics 2, 1, or 0 mirror tuning mirror angles
for attenuation different mirror types (C, Pd) Jan Grnert, WP74,
European XFEL Mirror options 25keV5keV 18