1. Méchanic at the CPPM - 29/06/05 Françoise RIVIERE – Jean-Luc GIMENEZ - Pierre KARST
IR Detector
- Test cryostat For IPNL
- Shrinkage measurement at 120 K
- Integration of the detector into the Herschel cryostat
Demonstrator
- Update of the requirements (optics, alignment, reference, interfaces).
- Set up of the nomenclature, management of the drawing (SmarTeam).
- Preliminary design of the optic supports (technical solutions, functional and risk analysis).

2. Status of the design of the test cryostat
DONE
Available quotation for the components
Drawing management
with Smarteam (IN2P3 database)
3 D design in progress
TO BE DONE :
- To freeze the design of the rear face
- To freeze the dimensions in respect with the choice of the component supplier
- To design the supporting frame
- To increase the dimension of the view port
- To define the details for the assembly (welding)  Detail drawings
- To find the optimal treatment in order to reach the best emissivity of the internal
surfaces.

3. Shrinkage measurement at 120 K
Proposal of the very preliminary concept (to be developped by the collaboration)

4. Integration of the detector into the Herschel cryostat
Herschel cryostat mediun plane

5. Integration of the detector into the Herschel cryostat
The signal cable is connected to the closer feedthrough (f 60)
The other ones are to be supported and the routing to be defined towards a larger available feedthrough (f 100)

6. SPECTROGRAPH DEMONSTATOR
Update of the requirements
Geometrical requirement of the optics (01/07/05)
Perpendicularity
Concentricity with the reflective surface axis
Optical alignment procedure (01/07/05)
Requirement for each module
Measurable surfaces defining an absolute reference
Interfaces for the fixation and the positionning of two optical components for the alignment procedure (input and output beam)
Ouput focal plane
Module reference
Input focal plane

7. Set up of the nomenclature, management of the drawing
Drawing management with SmarTeam (IN2P3 database)

8. Preliminary design of the optic supports
Fixation with glue
Glues in competition :
FT (Emerson & Cuming)
(3M)
- RTV 566 (MG chemicals)

9. Preliminary design of the optic supports
Elastic fixation
Mirror
Springs
Next step : developping the technical functional analysis of the optic support, and make the choice by the risk analysis method (AMDEC).
Expected before the end of July.