L1500052-v1

Thermal Noise Workshop Agenda (draft 2015-03-26)

Tuesday: 09:00-10:30	Session A: Thermal noise solutions adopted in 2G detectors (aLIGO, aAdV) 
Targets: very short term upgrades? 
- 20’ talk on Advanced detectors solutions for low thermal noise suspensions:  o Current solutions and their limitations 
o Short term upgrades 
o Open questions 
 
- 20’  talk on Advanced detectors solutions for low thermal noise test masses: o Current solutions and their limitations 
o Short term upgrades 
o Open questions 
 
- Discussion on performances, limits and possible small improvements

Tuesday: 11:00-12:30	Session B: Thermal noise modelling 
Targets: is our model of the thermal noise complete? Are Non-Equilibrium effects significant?
- 20’ talk on modelling the thermal noise: o Current models and their implementation in GWINC 
o Limitations and possible improvements 
o Open questions 

- 20’ talk on thermal noise and Non-Equilibrium effects: o What’s that? 
o Why it does matter? 
o What we need to know? 

- 20 min of bottom-up talk? 
- Discussion 

Tuesday: 16:00-18:00	Session C: Cryogenics and materials 
Target: cryogenic detector, where we are and what are the needed R&D? 

- 20’ talk on Cryogenic interferometer technologies: o Operative temperature: 110K or 10/20K? 
o Cooling technologies vs cooling time 
o Status of the art and needed developments 
o Open questions 

- 20’ talk on Materials for suspensions and test masses in a cryogenic detector o Are we able to realize a cryo interferometer? 
o Is really silicon an alternative to sapphire (feasibility, noises) 
o Open question 

-20’ talk on Optical Absorption on substrates: o What we know about optical absorption in crystalline test masses? 

- 20’ Bottom-up talk 
- Discussion 

Wednesday: 09:00-10:30	Session D 
D.1) To be less sensitive to the thermal noise: Optical solutions 
Targets: are flatter beams a possible solution? 
- 20’ talk on High order mode beams o Status of the research, last achievements 
o Open questions and future directions 

- discussion 

D.2) Coatings: 
Targets: Do we have valid solutions for the HR coatings in future detectors? What are the technical / engineering challenges e.g. associated with larger mirrors? 
- 20’ Review talk on the status of the art and known limitations 
- Discussion 

Wednesday: 16:00-17:30	Session E: Coatings (cont.) 
- Bottom-up talk on coatings 
- Discussion 

Wednesday: 18:00-19:00	Session F: Summaries 
- Summarizing .... 
- Preparation of a R&D white book: what is progressing and what is needed to progress 
- Planning