1. TPB coatings at TE-VSC-SCC Wil Vollenberg CERN TE-VSC-SCC wil.vollenberg@cern.ch 02-12-2015; WA 104 weekly meetingWil Vollenberg Co-workers: Pedro Costa Pinto ; Mauro Taborelli ; Benoit Teissandier

2. Contents: - Coating activities at TE-VSC-SCC - our experience in TPB coatings - our commitment in WA104 project Wil Vollenberg 02-12-2015; WA 104 weekly meeting

3. DC Magnetron sputtering planar configuration Wil Vollenberg02-12-2015; WA 104 weekly meeting

4. DMS DC Magnetron sputtering planar configuration Ø 600 mm After bake: 2*10 -9 mbar 2 magnetrons Ø 150 mm (3 DC cathodes) up to 5 objects Ø120 mm: +/- 10 % Flexibility Wil Vollenberg Equipment in our labs 02-12-2015; WA 104 weekly meeting

5. Examples DMS Wil Vollenberg Equipment in our labs NEG on MCP B 4 C on mylar for nTOF 02-12-2015; WA 104 weekly meeting C coating on electrodes for low SEY Nb coating for HIE-Isolde Tuning plates

6. DC Magnetron sputtering planar configuration Ø 1450 mm !! No Bake P limit = 5*10 -7 mbar 2 magnetrons Ø 150 mm rotated object holder Ø1200 mm: +/- 10 % Flexibility Wil Vollenberg Equipment in our labs 02-12-2015; WA 104 weekly meeting

7. Examples MP1500 Wil Vollenberg Equipment in our labs NEG on foils for WITCH NEG on electrodes Gas ionisation BPM Nb on Cavity Asacusa Cu conductive coating TCDS 02-12-2015; WA 104 weekly meeting

8. Magnetron DC Plasma coating in cylindrical configuration Wil Vollenberg02-12-2015; WA 104 weekly meeting

9. DC Diode cylindrical configuration RF ceramic windows (LEP-LHC-ESRF) Pick-ups (CTF3 – linac 2) Wil Vollenberg Equipment in our labs 02-12-2015; WA 104 weekly meeting

10. LSS coating system 3mm wires of Ti, Zr and V Solenoid L=8m  =60cm manifold Extensions + chambers From: Pedro Costa Pinto 02-12-2015; WA 104 weekly meeting

11. Our experience in TPB coating: - end 2007 /begin 2008 first TPB tests for ICARUS / WARP - by spray-technique or evaporation - evaporation in units of PH division - work done by “surface and coating” section. Wil Vollenberg02-12-2015; WA 104 weekly meeting

12. d Wil Vollenberg x-tal sample shutter Mo boat Volume tank 50 l Turbo pump: 300 l/s P limit = 1.5*10 -7 Torr (24 h pumping) Deposition rate: 1 µg/cm 2 /s P during coating: below 10 -6 Torr Sample production 3*3 cm 2 P.E. foils / quartz Delta mass => density 02-12-2015; WA 104 weekly meeting Ø 30 cm 26 cm COATING SET-UP 2007-2008

13. Sample TPB coating 2007-2008: - Samples: Mylar foil and quartz plates - TPB 110 – 1460 µg/cm 2 Wil Vollenberg02-12-2015; WA 104 weekly meeting

14. Results TPB coating 2007-2008 (F.P.): on mylar samples 3*3 cm 2 - 100 µg/cm 2 : 2.2-2.7 p.e / keV - 200-300 µg/cm 2 : 2.7-2.9 p.e / keV - 600 µg/cm 2 : 2.2-2.4 p.e / keV p.e. : photo electron / keV !? 2015: tests are ongoing !! => Maura Wil Vollenberg02-12-2015; WA 104 weekly meeting

15. Sample TPB coating 2007-2008: - SEM: for 110 µg/cm 2 : not continuous layer for thicker layers: O.K. - SEM after thermal cycles (liquid Nitrogen) up to 5 cycles: no change in morphology neither peel off observed Wil Vollenberg02-12-2015; WA 104 weekly meeting

16. 2015 TPB coatings for WA104 ICARUS: according to commitment: EDSM 1531005: collaboration of TE-VSC: - pumping system - support during re-installation - technical guidance during commissioning: testing / prototyping - technical assistance and quality assessment during production phase. Wil Vollenberg02-12-2015; WA 104 weekly meeting