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KALYPSO @ VLS XUV Spectra at 1 MHz
Stefan Düsterer for MSK (SDiag) and FS-FLASH-D FLASH Seminar,
DESY, 18.12.2018
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Outline
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
• Motivation • What is VLS and Kalypso ? • Applications and
results
• Outlook next version • Thanks …
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Page 3 180 182 178 Photon energy (eV)
Spectral measurements Simulation SASE pulses (Self-Amplified
Spontaneous Emission )
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VLS Spectrometer @ FLASH1
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
FLASH1 and bunch repetition rate
FLASH1 (1 MHz, 500 kHz, …)
VLS spectrometer
Bunch No.
K. Tiedtke et al., New journal of physics 11.2 (2009):
023029.
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KALYPSO
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
KArlsruhe Linear arraY detector for MHz rePetition-rate
SpectrOscopy
• Parameters for current version 2.1
• 256 pixels, 50 µm pitch • 14 bit ADC, 2.7 Mfps
• Burst mode -> few 1000 “line images” per 10 Hz • cw
operation (for storage rings or cw FELs)
• Continuous data stream out • Low latency for fast feedback
• First demonstration • ANKA/KARA: 2.7 MHz • E-XFEL: 2.25 MHz •
FLASH: 1 MHz
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KALYPSO
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Overview: Building Blocks of the Detector System
Accelerator Photon Beamline User Experiment
KALYPSO board with 16 channel ADC ASICs
Sensor
Data processing Control system
GPUs Carrier with FPGA readout: Data transfer &
pre-processing
MTCA.4
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Applications of KALYPSO
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Different applications
Synchrotron: KALYPSO installed at visible synchrotron radiation
port Measure horizontal bunch position and profile Single-shot
(turn-by-turn) with 2.7 MHz Continuous data taking => 1.4 GB/s
Horizontal synchrotron motion in low-alpha mode
XFEL
Electron bunch Diagnostic: EOS (Bernd Steffen)
FLASH: XUV spectrometer
0 6000 1500 3000 4500
Pixe
l
Turns
0
256
128
64
192
Unpublished Data!
Preliminary, courtesy of B. Kehrer and S. Funkner
By B. Steffen
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KALYPSO --> DOOCS / DAQ
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Graphical user interface
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How to get to KALYPSO
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
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VLS – Variable-Line-Spacing spectrometer
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Setup
Reflexionsgitter
Ce:YAG-Kristall
0-te Ordnung(zum Experiment)
G. Brenner et al., Nucl. Instr. and Meth A 635, 99–103
(2011).
Reflexionsgitter
Ce:YAG-Kristall
0-te Ordnung
(zum Experiment)
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Automatic movement of the VLS detector
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
3 motor movement
G. Brenner et al., Nucl. Instr. and Meth A 635, 99–103
(2011).
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VLS Spectrometer @ FLASH1
| KALYPSO - a MHz linear array detector | S. Düsterer,
21/11/2018
0th order (to experiment)
6nm 60nm
1st order
VLS grating
FEL beam
G. Brenner et al., Nucl. Instr. and Meth A 635, 99–103
(2011).
Working range: 5.8 – 60 nm Efficiency: 1 – 10 % Resolving power:
~2-3 103
Gotthard-I replaced by KALYPSO
CeYAG scintillator screen imaged by tandem optics
VLS Spectrometer
Kalypso
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Applications
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
KALYPSO and VLS
Pulse number
Wav
elen
gth
[nm
]
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First tests KALYPSO
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Korrelation with GMD and Energy server
Correlation with 600.000 FEL pulses
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Tuning well defined pulse trains
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Start up of SASE tuning After machine tuning
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Defined slopes
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
e.g. for Absorption spectroscopy
Binding Energy
FEL photon Energy
Bandwidth
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Intra bunchtrain energy correction
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018 By Ch. Schmidt
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Outlook
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
KALYPSO v2.5
F M C
# channels Fast ADC
Jitter Cleaning PLL
Bias + Control
# channels Fast ADC
Gotthard –HR chips
Sensor
• ASICs: • From 2x Gotthard 1.6 to 8x Gotthard-HR10 (2017) •
Technology: UMC CMOS 110 nm
• HIGH spatial resolution: • 1024 pixels @ 25 µm or 512 pixels @
50 µm • 25 mm field of view => standard optics
• HIGH frame rate: • Goal: increase frame rate to 10 MHz • 20
GB/s => “big data” and data reduction
courtesy of M. Caselle
courtesy of L. Rota
KALYPSO 2.5 (1024 pix.)
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Summary
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
MHz line detector at an XUV online spectrometer
• KALYPSO MHz linear array detector • Use for visible / IR light
for bursts and cw MHz reprates • Fully integrated in DOOCS /
DAQ
• Kalypso + online XUV spectrometer
• Helpful for tuning (either constant or tilted wavelength
distribution over pulse train) • Important for many experiments
(save the data for analysis) • First attempts to use (LLRF)
feedback to get desired wavelength pattern
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Acknowledgements
| KALYPSO@VLS | Stefan Düsterer, 18/12/2018
Collaborations
• Karlsruhe Institute of Technology KIT • KALYPSO Board Design •
Board assembly and Bonding
• Paul Scherrer Institut PSI
• Gotthard ASIC – A. Mozzanica, B. Schmitt
• DMCS, Lodz University of Technology • Design KALYPSO Carrier •
Firmware Programming
• DESY
• DOOCS server: Vladimir Rybnikov (MCS4) • KALYPSO operation:
Bernd Steffen, Christopher Gerth, Christian Schmidt (MSK) • VLS @
FLASH1: Stefan Düsterer, Günter Brenner, Daniel Haack, Kai Tiedtke
(FS-FLASH-D)
Michele Caselle
Dariusz Makowski
Lorenzo Rota (now at SLAC)
Aleksander Mielczarek
Contact@DESY Christopher Gerth – [email protected]
Stefan Düsterer - [email protected]
KALYPSO @ VLS�OutlineSASE pulses (Self-Amplified Spontaneous
Emission ) VLS Spectrometer @ FLASH1 KALYPSOKALYPSOApplications of
KALYPSOKALYPSO --> DOOCS / DAQHow to get to KALYPSOVLS –
Variable-Line-Spacing spectrometer�Automatic movement of the VLS
detectorVLS Spectrometer @ FLASH1 Applications�First tests
KALYPSOTuning well defined pulse trainsDefined slopesIntra
bunchtrain energy correction OutlookSummaryAcknowledgements
