1. Name (Lab)Presentation title (Place, date) 1 IN2P3 Les deux infinis Optical cavity Revue ThomX mécanique (25/01/2011) Optical cavity Yann Peinaud & Mickael Lacroix (LAL) peinaud@lal.in2p3.fr & lacroix@lal.in2p3.fr

2. Name (Lab)Presentation title (Place, date) 2 IN2P3 Les deux infinis Optical cavity  Synoptic & Constraints  Solutions  Motorized table, bumpers / Optical table  Vacuum chamber  Mirror adjustment system  Actuator capsule  Optical chamber  Dîpole chamber  X-ray output  Vacuum load compensation system  Positioning strategy  Not studied yet Summary

3. Name (Lab)Presentation title (Place, date) 3 IN2P3 Les deux infinis Optical cavity Synoptic and constraints Flat mirror 1 ( θx, θy, z ) Flat mirror 2 ( θx, θy, z ) Spherical mirror 1 ( θx, θy, z ) Spherical mirror 2 ( θx, θy, z ) x y z Waist e- beam  Synoptic  Constraints  Micro positioning of the Waist (+/-10µm on X and Y)  Stability of the positioning  “No vibration”  No misalignment (No load variation)  Vacuum  Low out-gasing materials  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z )  Lowest interaction angle  40mrad of Compton X-ray output  Lowest e- beam perturbation 2100 mm

4. Name (Lab)Presentation title (Place, date) 4 IN2P3 Les deux infinis Optical cavity Motorized table, bumpers and optical table Bumpers Constraints:  Micro positioning of the Waist (+/-10µm on X and Y)  Stability of the positioning  “No vibration” x y z X motion Y motion 3 feets with X&Y micro motions + bumpers between the 2 tables (used by Mightylaser at KEK)

5. Name (Lab)Presentation title (Place, date) 5 IN2P3 Les deux infinis Optical cavity Vacuum chamber Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C Ring chambers Ring dipoles Optical chambers

6. Name (Lab)Presentation title (Place, date) 6 IN2P3 Les deux infinis Optical cavity ThomXMightyLaser (R.Cizeron) Z motion balls (2 on « v » tracks and 1 on flat track) Vacuum chamber  Mirror adjustment system ParametersMightyLaserThomX Max length between mirors (mm)5002100 Minimum incremental motion (µm)0,30,1 Minimum incremental motion used (µm)10,1 Arm length (mm)11060 Laser spot precision on the furthest miror (µm)1,363,5 Laser spot precision used on the furthest miror (µm)4,553,5 θx, θy motion with a cardan solution (flexure hinges) Vacuum prepared actuators Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z )  40mrad of Compton X-ray output

7. Name (Lab)Presentation title (Place, date) 7 IN2P3 Les deux infinis Optical cavity Vacuum chamber  Actuator capsule Micro-actuator CF16 flanges Sub-C ceramic plug Spring Baking tests are planned Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z )

8. Name (Lab)Presentation title (Place, date) 8 IN2P3 Les deux infinis Optical cavity Vacuum chamber  Piezo Sub-C ceramic plug Not possible Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z ) High out gasing material Is it really needed in ThomX? Is the electron repetition frequency adjusted on the length of the optical cavity? If it’s the case what will be the range?

9. Name (Lab)Presentation title (Place, date) 9 IN2P3 Les deux infinis Optical cavity Vacuum chamber  Optical chamber Thick base (40mm) to minimize deformations due to the vacuum Thick socket on 3 feets (with precise positioning) Constraints:  Stability of the positioning  No misalignment (No load variation)  Vacuum  Low out-gasing materials  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z )

10. Name (Lab)Presentation title (Place, date) 10 IN2P3 Les deux infinis Optical cavity Vacuum chamber  Dipole chamber e- Pumping port Slits for laser and X-ray : - R3 x 27mm - R4.5 x 45mm BPM Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C  Lowest interaction angle  40mrad of Compton X-ray output  Lowest e- beam perturbation 40 mrad X-ray

11. Name (Lab)Presentation title (Place, date) 11 IN2P3 Les deux infinis Optical cavity Vacuum chamber  X-ray output Cavity diagnostic (CfF40 window) Laser injection (CF 40 window) 40 mrad X-ray (CF63 beryllium window) Tests are planned to place the injection on the opposite side of the X-ray Constraints:  Vacuum  Low out-gasing materials  Baking at 150°C  Lowest interaction angle  40mrad of Compton X-ray output

12. Name (Lab)Presentation title (Place, date) 12 IN2P3 Les deux infinis Optical cavity compensation system Bellow for dilatation BPM support (still under study) pad Translation of 2 mm due to baking at 150°C Vacuum load compensation system Constraints:  Stability of the positioning  No misalignment (No load variation)  Vacuum  Baking at 150°C  Micro positioning of the mirrors ( θx, θy, z ) Bellows for compensation

13. Name (Lab)Presentation title (Place, date) 13 IN2P3 Les deux infinis Optical cavity Positioning fingers Positioning strategy

14. Name (Lab)Presentation title (Place, date) 14 IN2P3 Les deux infinis Optical cavity Not studied yet  The full integration between cavity and ring  Accoustic isolation & thermalisation (Mightylaser baseline)  Cleanness conservation (Mightylaser baseline)

15. Name (Lab)Presentation title (Place, date) 15 IN2P3 Les deux infinis Optical cavity Back slides

16. Name (Lab)Presentation title (Place, date) 16 IN2P3 Les deux infinis Optical cavityCavité optique Intégration sur l’anneau  Propriétés :  Angle d’intéraction de 2°  Bon accès aux miroirs  Ne nécessite pas de place dans l’anneau

17. Name (Lab)Presentation title (Place, date) 17 IN2P3 Les deux infinis Optical cavity Synoptique de la cavité optique 4 miroirs  Alignement  θx, θy pour chacun des miroirs  Focalisation (taille du waist)  Z sphérique 1 et 2  Longueur de cavité (fréquence de résonnance)  Z plan 1 et 2 Miroir plan 1 ( θx, θy, z ) Miroir plan 2 ( θx, θy, z ) Miroir sphérique 1 ( θx, θy, z ) Miroir sphérique 2 ( θx, θy, z ) x y z Waist e- beam  Synoptic  Constraints  Waist micro transversal positioning (+/-10µm)  Micro positioning of the mirrors  θx, θy on each mirrors  Z on spherical mir  Stability of the positioning  “No vibration”  Mirrors alignment under air  UHV  Materials  Atmosphere pressure  baking at 150°C

18. Name (Lab)Presentation title (Place, date) 18 IN2P3 Les deux infinis Optical cavity Dipôle BPM Vanne Pompe ionique Chambre miroirs Table optique Chambre dîpole x y z Table motorisée en X et Y Soufflet : - Isolation - Mvt transverse (table X,Y) - Mvt longitudinal (étuvage) Intégration sur l’anneau

19. Name (Lab)Presentation title (Place, date) 19 IN2P3 Les deux infinis Optical cavity Not studied yet  The full integration between cavity and ring  Accoustic isolation & thermalisation (Mightylaser baseline)  Cleanness conservation (Mightylaser baseline)