Laser Harmonics in gases For seeding at SPARC: Design and Calculations.

Dimension: px

Commencer à balayer dès la page:

Download "Laser Harmonics in gases For seeding at SPARC: Design and Calculations."

Émile Dumouchel
il y a 10 ans
Total affichages :

1 CEA / Service des Photons Atomes et Molécules Laser Harmonics in gases For seeding at SPARC: Design and Calculations. G. Lambert, M. E. Couprie, M. Bougeard, D. Garzella, H. Merdji, P. Breger, J.F. Hergott, P. Monchicourt, P. Salières, B. Carré.

Lambert, M. E. Couprie, M. Bougeard, D. Garzella, H.

2 General top view of the SPARC facility and of the seeding experiment implantation Undulators Harmonic generation experiment in gases Linac Laser hutch

3 General top view II Beam shaping chamber Seeding mirror and chicane Harmonic beam IR beam Chamber of harmonic generation in gases Optical table

4 Criteria taken into account 1) Performances of the harmonics in gases for a 2.5 mj Ti: Sa laser and f=2m -At 266 nm (H3) E>50 nj -At 160 nm (H5) E>5 nj -At 114 nm (H7) E>0.5 nj -At 89 nm (H9) E>0.5 nj But optimising at H5 for starting 2) Vacuum needs mbar in the linac mbar in the harmonic generation chamber 3) Resistance of the mirrors to damages in the transport-line coming from IR laser: 2.5 mj, 10 Hz, 100 fs 4) Geometrical constraints due to the accelerator and the building

5 nj But optimising at H5 for starting 2) Vacuum needs -10-9 mbar in the linac -10-3 -10-4 mbar in the harmonic generation

5 General view from the top of the experiment Modulator Adaptation of the Beam diameter With an afocal system Lens UV photodiode In translation IR Beam Diaphragm Gas jet Harmonic Beam Spherical Mirrors LiF or MgF 2 or CaF 2 window in an additional chamber Periscope e-beam Chicane e-

translation IR Beam Diaphragm Gas jet Harmonic Beam Spherical Mirrors

6 Modulator 1500 TMP Gas jet system in motorized XYZ translations Motorized lens in translation f=2000 IR Periscope 100 Longitudinal view of the experiment 1500 Harmonic Periscope Fast shutter IP Pulsed valve at 10 Hz Window Big Valves

Periscope 100 Longitudinal view of the experiment 1500

7 IR waist evolution, before the focalisation point in the gas jet. location Z Wp(Z) Fluence Power density m µm J/cm2 W/cm2 Focalisation lens ,003 2,76E+10-1, ,003 3,49E+10-1, ,004 4,32E+10-1, ,005 4,91E ,011 1,11E+11-0, ,020 1,96E+11-0, ,044 4,41E+11-0, ,175 1,75E+12-0, ,272 2,72E+12-0, ,476 4,76E+12-0, ,627 6,27E+12 Ź -0, ,030 1,03E+13-0, ,550 1,55E+13-0, ,550 2,55E+13-0, ,732 4,73E+13-0, ,754 6,75E+13-0, ,117 8,12E+13-0, ,722 9,72E+13-0, ,489 1,15E+14-0, ,203 1,32E+14 Gas output wo ,992 1,50E+14 -better conversion rate in gas (the waist at the focalisation point encrease with f). -decreasing of the harmonic divergence. 800 nm, 100 fs, diameter of 15 mm on the lens, waist at the focussing point W o = 102 µm, Z o =27 mm, Gaussian factor M 2 =1.5, E laser =2.44 mj for an intensity near the focalisation point around I= W/cm 2.

2814 0,020 1,96E+11-0,5 1878 0,044 4,41E+11-0,25 943 0,175 1,75E+12-0,2 757 0,272 2,72E+12-0,15 572 0,476 4,76E+12-0,13 498 0,627 6,27E+12 Ź -0,1 389 1,030 1,03E+13-0,08 317 1,550 1,55E+13-0,06 247

8 Longitudinal evolution of the IR and harmonic beams in transversal domain. w 0 and w 0 ' are respectively the laser object and image waists at the focusing points, and s and s' respectively the laser object and image distance w o1 s 1 f 1 f 2 d s' 2 w o ' 2 Unit µm m m m m m µm Value ,1543 6,02 277

points, and s and s' respectively the laser object and image distance w o1 s 1 f

9 Beam profile evolution for H5 radiation (160 nm) from the gas jet to the exit of the undulator Spherical multilayer mirrors with R=0.8 =72 µm E H5=160 nm = 5 nj IR eliminating system R total =0.5 E= 2.5 nj Two flat mirrors zone R=0.8 E H5 = 1 nj or 14 kw W o 2 = 277 µm

8 =72 µm E H5=160 nm = 5 nj IR eliminating system R total =0.5 E= 2.

10 2005: Timing -Until the end of June: components orders -September-November: receiving of the differents components assembling -December-February: tests in Saclay 1)harmonics generation 2)beam shaping system 3)energy measurement 4)remote control system 2006: -Beginning of March: Transportation to Frascati and installation in SPARC facility -End of March: Report. Deliverable to Eurofel

2)beam shaping system 3)energy measurement 4)remote control system 2006: -Beginning of March:

11 DS4 Equipment boite commande BL cout unit nbre duréeamo cout Y DS4 pompe primaire Alcatel /P01/05/ pompe turbo 1300lpr jet Alcatel /P01/06/ amortiseement sur 6 ans?? pompe turbo1000l-glame récup Mestagh ou atto pompe turbo G3 recup SACO ou Lmestagh pompe ionique recup SACO cbre n 2 Méca /06/ gamelle réjection IR 0 recup gamelle étalon FP ELETTRA transxyzjetmotorisée Méca /06/ en attente tube à vide Méca alim Parker recup M. Smidth? moteurs piezo/pasàpas MICOS/BFI/TriopticsJena/PI 01/06/ vanne pour turbo jet recup Mestagh vannes pour turbo VAT 01/06/ vanne pour ionique recup SACO vannes entr gamelles 01/06/ recup Mest ou récup Pradel jauge de pression ordi portable pilotage 01/07/ prévu 50000

? pompe turbo1000l-glame 60 7500 0 récup Mestagh ou atto pompe turbo G3 recup SACO ou Lmestagh pompe ionique recup SACO cbre n 2 Méca 2000 01/06/2005 60 7500 3750 gamelle réjection IR 0 recup gamelle

12 DS4 Consumable boite commande BL cout Y1 Y2 Y3 Y DS4 Nbre prix unitaire vanne primaire-2daire VAT /P30 31/03/ ,5 vanne pulséejet 01/06/ vannes entre gamelles recup Mestagh hublot d'entrée-atelier 200? bride pleine-hublot entrée 500? fenetre entrée anti reflet 300? valve pour jet Parker 400 design final jet atelier 500? pass translation motorisée 01/06/ à garder ou pas pass translation non motorisé 01/06/ à garder ou pas systeme de cde passage raccord iso 200/CF160 01/06/ hublot montures miroirs sous vide support de gammelle driver moteur sous vide, support modif de gamelle N 1-Meca /P30 01/09/ cellule miroirs VUV à 160 nm Fraunhoffer 5000 miroirs VUV à 114 nm 5000 lame LiF 1000 camera Labview ,5 prévu 25000

pass translation motorisée 01/06/2005 2600 2 1300 à garder ou pas pass translation non motorisé 01/06/2005 650 1 650 à garder ou pas systeme de cde passage raccord iso 200/CF160 01/06/2005 700 hublot

Documents pareils

[email protected]

Emmanuel.rousseau@institutoptique.fr E. Rousseau, J-J Greffet Institut d optique Graduate School S. Volz LIMMS, UMI CNRS University of Tokyo, EM2C A. Siria, J. Chevrier Institut Néel-CNRS Grenoble F. Comin ESRF Grenoble [email protected]