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Colliding the Highest Brilliance Photon beam with the Highest Luminosity Hadron beam Colliding the Highest Brilliance Photon beam with the Highest Luminosity Hadron beam

Colliding the Highest Brilliance Photon beam with the Highest Luminosity Hadron beam - PowerPoint Presentation

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Colliding the Highest Brilliance Photon beam with the Highest Luminosity Hadron beam - PPT Presentation

phase space density small emittance vs low efficiency small cross section Hybridization a machine developed for applied physics FEL joined to a machine developed for fundamental research LHC ID: 800222

meeting 2016 oct fel 2016 meeting fel oct kev laser fotoni cern sources band thomson roma3 100 energia csn1

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Slide1

Colliding the Highest Brilliance Photon beam with the Highest Luminosity Hadron beam

⇒ phase space density (small emittance) vs. low efficiency (small cross section)Hybridization: a machine developed for applied physics (FEL) joined to a machine developed for fundamental research (LHC) ??TeV-class pion, muon, photon, neutrino beams with mm.mrad-class normalized transverse emittancesIdea of shooting lasers to hadron beams is an old one… keywords: high brilliance, high 6D phase space density, highly relativistic

High Brightness Secondary Beams fromHadron-Photon Colliders: p, m, g, nLorentz Boosted pion-muon Photo-cathodes

Meeting RD-FA – CSN1 – Roma3, Nov. 9th, 2016

Luca Serafini

, Camilla Curatolo - INFN/Milan and Univ. of Milan

Slide2

Not a new idea.. but A.Dadi and C.Muller analyzed a multi-photon reaction and didn

t make evaluations of the phase spaces for the generated pion/muon beams

Slide3

Slide4

Slide5

Why FEL’s ?

Best Machines for High Brilliance Photon beams(though limited to 10-20 keV photon energy)

Meeting RD-FA – CSN1 – Roma3, Nov. 9th, 2016

Slide6

FLASH

12.4

1.24

0.124

l

(nm)

Thomson/Compton Sources

Brilliance of Lasers and X-ray sources

BELLA

ELI

Outstanding X/

g

photon beams

for Exotic Colliders

Sorgenti Thomson/Compton e Collisori Fotonici - Dottorato Roma1 - Oct. 2016

Slide7

Slide8

Slide9

Slide10

Meeting RD-FA

CSN1 – Roma3, Nov. 9th, 2016

Slide11

Slide12

Slide13

Slide14

Slide15

Slide16

Slide17

Meeting RD-FA

– CSN1

– Roma3, Nov. 9th, 2016

Slide18

Slide19

f=100 Hz

Slide20

X-band FEL meeting, CERN, Oct. 13th 2016

Slide21

X-band FEL meeting, CERN, Oct. 13th 2016

Slide22

X-band FEL meeting, CERN, Oct. 13th 2016

Slide23

X-band FEL meeting, CERN, Oct. 13th 2016

Slide24

X-band FEL meeting, CERN, Oct. 13th 2016

SPS

Slide25

X-band FEL meeting, CERN, Oct. 13th 2016

Slide26

Meeting RD-FA

– CSN1

– Roma3, Nov. 9th, 2016

Slide27

Slide28

Slide29

Slide30

Slide31

X-band FEL meeting, CERN, Oct. 13th 2016

Slide32

Raggi X Monocromatici: Sorgenti di

Luce di Sincrotrone di 3a e 4a Generazione3a: Synchrotron Light Sources: energia fotoni X < 50 keV,durata temporale impulso di radiazione > 50 ps,dimensioni, costi: (100 m, 300 M$)

4a: X-ray Free Electron Laser (LCLS): energia fotoni ≤ 25 keV, durata impulso 1-100 fs, (1 km, 1 G$)

Slide33

Nuovo Approccio: inverse Compton scattering (ICS), cioe’ retro-diffusione Thomson/Compton di fasci laser da parte di fasci relativistici di elettroni prodotti da acceleratori compatti. Energia fotoni X da 20 a 200 keV, durata impulso sub-ps, Paradigma Dimensioni-Costi

(10 m , 10 M$)A volte menzionati come Laser Synchrotrons, cioe’ Sincrotroni Laser, in quanto il fascio laser collidente con il fascio di elettroni sostituisce i campi magnetici di dipolo o di ondulatore che deflettono il fascio di elettroni nelle Sorgenti di Luce di SincrotroneGrande vantaggio rispetto ai tubi a Raggi X convenzionali (bremsstrahlung): righe definite e regolabili nello spettro in energia permettono nelle tecniche di radiological imaging di non depositare dose di radiazione nei tessuti (coda di bassa energia dello spettro X di bremsstrahlung) che non trasporti informazione al rivelatore

Slide34

Collisore elettrone-fotone altamente

asimmetrico e compatto* (cfr. LHC)Fascio secondario di fotoni prodotto grazie al grande boost di Lorentz del sistema di riferimento del centro di massa elettrone-fotone (cfr. LHC, simmetrico, zero boost di Lorentz)

*10 m, 10 M$Elettroni con energia nel range 10-100 MeV collidono contro fotoni laser con energia nel range 1-3 eVNuova Generazione

Slide35

La sfida tecnologica e’ far collidere due fasci contro-propaganti dello “spessore” di una decina di microns (due capelli) lanciati alla velocita’ della luce uno contro l’altro.

LHC (bosone di Higgs) docet…L’ambizione e’ costruire sistemi cosi’ compatti e performanti da poter essere localizzati all’interno dei grandi Istituti Ospedalieri per la diagnostica e la terapia sui pazientiBriXS…Il principio della sor

gente di raggi X Thomson

Slide36

macchina

compatta 10x10 m2In operazione dai primi del 2015

Slide37

Flusso misurato

5

.1010 fotoni/s con 20 mAmeasured

Righe spettralimono-cromatiche

e accordabili

Slide38

Courtesy A. Variola

STAR

Le Sorgenti Thomson/Compton sono gli “acceleratori di fotoni” piu’ efficaci

“4

g

2

boost effect”

HigS

ELI-NP

CALA

Slide39

Schema del dispositivo

BriXS

Slide40

Fase

1: 32 M€ per un Linac CW Super-Conduttivo

da 50 MeV accoppiato ad una cavi

tà ottica

F

a

b

ry-Per

o

t

p

er

g

e

n

erare

ra

ggi

X

da

20

ke

V

a

80 keV (1013 fotoni/s)

Fase 2: 16 M€ addizionali per Linac

upgrade

a 80

MeV

con

raggi

X fino a 200 keV ad altissimo fluss

o (1015

fotoni/

s)Investimento per impianti ed edilizia: 18 M€INFN e UniMi hanno competenz

e leader in questi settori per la progettazione e costruzione di BriXS (Progetti XFEL, ELI-N

P, S

TAR, SPARC-LAB)

Pr

oposta BRIXS modulabile in

2 fasi:

Meeting RD-FA – CSN1 – Roma3, Nov. 9th, 2016

Slide41

S

TAR (Calabria) Linac 20-100 1011 (100 Hz) 18From THOMX Conceptual Des

ign Report, A.Variola, A.Loulergue, F.Zomer, LAL RT 09/28, SOLEIL/

SOU-RA-2678, 2010So

r

g

e

nti

T

homson

e

sist

e

nti

e

d in

c

ostru

z

ione

Meeting RD-FA – CSN1 – Roma3, Nov. 9th, 2016

Slide42

Rivaling with Synchr. Light Sources for energies above 50 keV

Slide43

1-25 GeV

electrons

100-0.5 Åphotons

cm und. period

l

u

FEL

s

and

Thomson/Compton Sources

common mechanism:

collision between a relativistic electron and a (pseudo)electromagnetic wave

20-150 MeV electrons

0.8

m laser

l

20-500 keV

photons

3 km

20 m

The Classical E.M. view (Maxwell eq.): Thomson Sources as

synchrotron radiation sources with electro-magnetic undulator

Slide44

X-ray flux

NXbw in photons/sec within rms bandwidth bwCase A: head-on collision STAR-like UL energy of colliding laser pulse, Q electron bunch charge, fRF rep rate of electron bunches,

sx electron beam spot size at collisionCase B: BriXS-like with F-P optical cavityPFP power stored in Fabry-Perot cavity, <Ie> average electron beam current