flute, a linac-based thz source at kit€¦ · 22-24.11.2017 minjie yan – status of flute...
TRANSCRIPT
![Page 1: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/1.jpg)
KIT – The Research University in the Helmholtz Association
Institute for Beam Physics and Technology (IBPT)
www.kit.edu
Status of FLUTE FLUTE, a linac-based THz source at KIT
Minjie Yan for the FLUTE collaboration
![Page 2: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/2.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
2
FLUTE overview
Final electron energy ~ 41 MeV
Electron bunch charge 1 - 3000 pC
Electron bunch length ~1 - 300 fs
Pulse repetition rate 10 Hz
THz E-Field strength up to 1.2 GV/m long. phase space:
RMS bunch length 3.2 fs
![Page 3: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/3.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
3
status report last year
![Page 4: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/4.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
4
now
status report last year
![Page 5: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/5.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
5
Inauguration of FLUTE: 13.07.2017
http://www.ibpt.kit.edu/news_2017_7_KIT_press_release_FLUTE_inauguration_presidents.php
Photos: Markus Breig, KIT
![Page 6: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/6.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
6
FLUTE Status: Phase I
FLUTE hall
Laser THz Measure-
ment room
Control
room
Vacuum components
Laser
RF
Magnets & Diagnostics
SRR collaboration
![Page 7: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/7.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
7
Vacuum components status
Assembly finished
Partially evacuated: < 10-8 mbar
Photos: Markus Breig, KIT Photo: Laila Tkotz, KIT
![Page 8: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/8.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
8
Laser status 1/2
Laser transport of the 800 nm over 35 m onto the optical table in the
bunker
Prealignment of the last in-vacuum mirror with the cathode using a
laser tracker and an alignment laser almost finished
Measurement:
Image of the laser in the bunker
Courtesy: M.J. Nasse, T. Schmelzer
![Page 9: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/9.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
9
Laser status 2/2
In progress:
Purchase order of a larger, adapted optical
table for gun and SRR
Next step: THG on the table
e-
e-
Courtesy: M.J. Nasse, T. Schmelzer
![Page 10: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/10.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
10
RF-system status 1/2
All RF components assembled and tested
Klystron RF test finished
Klystron output ready for gun commissioning
Photos: Pawel Wesolowski, KIT
![Page 11: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/11.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
11
Power supply
50 kV, 200 mA Pulse forming network 525 nF,
21.5 mH
Pulse envelope is 4.5 us (NO LLRF feedback loop)
Transformer tank 1:14.5
and 45 MW klystron
RF-system status 2/2
Courtesy: N. Smale
![Page 12: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/12.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
12
Magnets and Diagnostics
No. Installation EPICS integr.
Magnets
Solenoid 1
Quadrupole 1
Dipole 1 ( )
Steerer 2
Diagnostics
Screen station 2
ICT 1 in progress
Faraday cup 1 in progress
BPM 3 in progress
![Page 13: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/13.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
13
SRR collaboration 1/4
Space for gun laser preparation,
diagnostics & SRR THz generation
Split-ring resonator vacuum chamber Image adapted from: J. Fabiańska et. al., Sci. Rep. 4, 5645 (2014)
THz
pulse
UV
pulse
E(t) in SRR gap
electric field
fs laser
<2 ps
LiNbO3
3n
n
THz streaking of the
electron bunch for
temporal diagnostics
First experiment planned
at FLUTE
![Page 14: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/14.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
14
Beam kick / % Resonant f / THz
SRR cubic gap 100 0.3
Slotted tube 60 0.5
Tube (com.) 420 0.5
SRR plate 180 0.5
SRR collab. 2/4:
Simulation results for various structures
Beam “kick” normalized to SRR (typical ranges 1 to 10 keV / c)
Courtesy: M. Dehler, M. Yan
![Page 15: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/15.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
15
Vacuum chamber
Design at PSI
Manufacturing at PSI
Installation at KIT
SRR collab. 3/4:
Task status PSI
![Page 16: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/16.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
16
THz generation
Design at Bern
Set-up & test at Bern
Installation at KIT
SRR structures
0 2 4 0
2
4
x (mm) y (
mm
)
Profile measured with
FLUTE laser at KIT
(laser lab)
Focused THz beam image
0 2 4
0
2
4
S (
arb
. u
.)
S (arb. u.)
3 2 1 0
0 1 2 3 4·103
4·103
Horizontal Vertical FWHM
0.92 mm 1.15 mm (at 0.3 THz) 1 mm
pixel size
indicators
SRR collab. 4/4:
Task status Uni Bern
![Page 17: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/17.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
17
R.W. Assmann, M. Felber, K. Flöttmann, M. Hoffmann,
H. Schlarb
H.-H. Braun, M. Dehler, M. Divall, R. Ganter, N. Hiller,
R. Ischebeck, M. Moser, L. Stingelin, V. Schlott, C. Vicario
A big Thanks to our partners from the
FLUTE collaboration:
… and others who are not in the photo
![Page 18: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/18.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
18
![Page 19: FLUTE, a linac-based THz source at KIT€¦ · 22-24.11.2017 Minjie Yan – Status of FLUTE Institute for Beam Physics and Technology (IBPT) 2 FLUTE overview Final electron energy](https://reader036.vdocuments.us/reader036/viewer/2022070922/5fbac95fae713272592612c0/html5/thumbnails/19.jpg)
22-24.11.2017 Minjie Yan – Status of FLUTE
Institute for Beam Physics and Technology (IBPT)
19
Progresses always accompanied by problems…
Untight RF waveguide: MAX lab borrowed us some spare parts
Cathode RF finger, cathode positioning
Laser jumps suddenly to TEM11 mode