Serafini Talk

SPARC-LAB: the Program
Luca Serafini, INFN-MI
• SPARC-LAB: infrastruttura di ricerca in costituzione a INFNLNF, con l’obiettivo di diventare una test facility europea per la
fisica/applicazioni dei fasci di e- ad altissima brillanza (1014-1018
A/mm.mrad2) e i fasci di fotoni ad altissima intensita’ (1021 W/cm2)
• Sara’ costituita da due elementi fondamentali: il fotoiniettore
SPARC (+linee di fascio) e il laser FLAME (+linee di fascio),
ospitato in un edificio adiacente al bunker SPARC, in fase di
completamento (pronto a giugno 2008)
LASA, 4 Marzo 2008
B
1018
17
AOFEL 10
I [kA]
1016

1015
SPARX
1014
SPARX 1 pC
SPARC
The Brightness Chart
LASA, 4 Marzo 2008
[A/(m.rad)2]
n [m]
1013
2I

2
n
LASA, 4 Marzo 2008
LASA, 4 Marzo 2008
Analysis methodology of movable emittance-meter measurements for low energy electron beams
A. Mostacci, A. Bacci, M. Boscolo, E. Chiadroni, A. Cianchi, D. Filippetto, M. Migliorati, P. Musumeci, C. Ronsivalle, and
A. R. Rossi, Rev. Sci. Instrum. 79, 013303 (2008)
High brightness electron beam emittance evolution measurements in an rf photoinjector
A. Cianchi et al., PRST-AB to be published March 2008
LASA, 4 Marzo 2008
LASA, 4 Marzo 2008
Frascati Laser for Acceleration and
Multidisciplinary Experiments (FLAME)
P ⋍ 200 TW
I ⋍ 1021 W/cm2
a0⋍10
LASA, 4 Marzo 2008
Planned Experiments @ SPARC-lab
• Laser Wake-Field Acceleration in plasma waves driven by
300 TW laser pulses either in self-injection mode or with
externally injected ultra-short electron bunches
• Thomson backscattering Sources of tunable monochromatic X-rays (20-800 keV): mammography on phantoms
• SASE-FEL, seeding FEL experiments (100-500 nm wavel.)
• Advanced photo-injector development at X-band (12 GHz)
for ultimate beam brightness
• IR-FEL for high peak power THz radiation
• AOFEL operation of Thomson Source with Coherent X-Ray
generation in the 0.1 -1 nm wavelength range
• Channeling radiation
• IFEL acceleration
• Proton beam production with laser-plasma (30-60 MeV)
LASA, 4 Marzo 2008
Schematic layout of electron beam lines
for FEL, Plasma Acceleration and
Thomson Source experiments
quadrupoles
dipoles
RF deflector
collimator
solenoid
Photoinjector
RF sections
25º
25º
11º
1.5m
10.0 m
LASA, 4 Marzo 2008
5.4 m
14.5 m
Diagnostic
1-6 Undulator
modules
Experimental set-up for the generation of tunable X-ray
radiation via Thomson scattering of optical photons by
relativistic electron bunches
10-50 m electron and
laser beam spot size
1 nC
0.1 to a few J laser pulses
tens of fs to ps long
LASA, 4 Marzo 2008
keV to MeV photons
105 to 109 per pulse
4 2
2
 X   LAS

4

 LAS
2 2
1  
for observation angle  1
Thomson Source: Parameter Table
LASA, 4 Marzo 2008
CO2 envelope
CO2 focus
r
m]
TiSa envelope
TiSa pulse
e- beam
plasma
Lsat=10LG=1.3 mm (=0.002)
Z [m]
// bp  7 cm
LASA, 4 Marzo 2008
bp  8 mm
W0=23 m,
T=17 fs
I=8.5*1018 W/cm2 , E=2.4 J
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
nota che abbiamo ancora energia laser che possiamo usare per aumentare
un po’ la durata fino a valori piu’ realistici oppure il waist per diminuire ulteriormente
le forze trasverse e quindi aumentare il raggio del beam
LASA, 4 Marzo 2008
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
LASA, 4 Marzo 2008
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
LASA, 4 Marzo 2008
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
LASA, 4 Marzo 2008
GENESIS Simulations
uniform beam over 0.5 m
averaged rms beam parameters
Check 3D effects
Average power (Lsat=2.5 mm)
Peak power 0.7 GW
  105 m
a0  0.8
s (micron)
  55
I  20 kA
P  500 GW n  0.3 m
R  1.3 nm 
 0.9 %
3
1D  1.8 10 
L  65 nm   5 m ;   4.5 mm
C
LASA, 4 Marzo 2008
GENESIS Simulations for laser undulator at 1 m
to radiate at 1 Angstrom
  106 m a0  1.3 P  8 TW

R  1.7 A 1D  6 104
Lsat1D  310 m LC  25 nm
Average power (Lsat~500 m, Psat~10 MW)
Peak power 100 MW
in 100 attoseconds
Simulation with real bunch =3.5 m
Field
LASA, 4 Marzo 2008
Conclusioni
• SPARC-LAB sara’ la test facility dove sviluppare R&D
per SPARX nei settori:
• Strutture RF in banda X
• Diagnostica avanzata per elettroni, fotoni, X
• Fisica del FEL (single spike, seeding, chirp, etc.)
• Sorgenti alternative (Thomson, channeling, AOFEL)
• Applicazioni a SPARC-LAB: imaging, diagnostica medica,
femto-chimica, national security, teniche pump-probe,
nanobiologia, fisica dei plasmi, fisica dei materiali, beni
culturali, geologia
LASA, 4 Marzo 2008
ALADYN vs. VORPAL
High resolution
z=/24=33 nm
x=/10=80 nm
20 particles per cell
x [m]
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
z [m]
LASA, 4 Marzo 2008
63000 particles
in red circle
(160 pC bunch)
QuickTi me™ and a
TIFF (U ncompressed) decompressor
are needed to see this pi cture.
LASA, 4 Marzo 2008