1. Status of GASPARD mechanics
Presentation from the update update update update (Padova)
Unité mixte de recherche CNRS-IN2P3
Université Paris-Sud Orsay cedex
Tél. :
Fax :

2. AGATA+CHYMENE+GASPARD

3. PARIS+CHYMENE+GASPARD
PARIS Cluster 3x3
GASPARD

4. 2D cut view Chymene+Gaspard

5. Trapezoidal shape updated

6. Detailed sector Numerical electronics
Cooling plate with 3mm inner tube
Support frame
Analog electronics
3rd layer 32x16 channels
2nd layer 32x16 channels
1st layer 128x128 channels

7. First trapezoid designed in detail by Micron (delivery may be in 2015 …)
MICRON design based on our requirements
PCB showed by MICRON for checking in february 2015 => wait for the bonding

8. Cooling rings principle
3 cooling circuits (one for each ring)
Forward
Barrel
Backward
Orsay electronics proposal gives a total of 620 W (inside the sphere).
Based on that there are 2 foreseen kind of cooling fluids to extract the heat through a cooling tube serpentine around the electronic boards.
CO2 with the 2 PACL technology (Nikkhef patent)
Smaller tubes (3 mm diameter) but for expertised user required
Water
For any user but bigger tubes (6 mm tubes)
The water is used here to design the system
(most conservative technology)

9. Cooling tubes design for the forward ring
The electronic boards are fixed on lateral ribs
Tube 5x6 mm of stainless steel
The tubes is brazed on a copper part screwed on top of the ribs

10. Cooling tubes design for the forward ring
< 5mm distance between the tube and the internal side of the chamber
Precise shape required
The tube is continuous to avoid leaks

11. Water flow for the forward ring
Tubes diameter = 5 mm
Power on the ring = 230 W
Circuit length = 0,45 m for each sector
Available flow
(JULABO FP50HL) =
For a flow of 0,8 liter/min:
Temperature rise along one sector circuit = 0,5°C
Temperature rise along the whole ring circuit = 4,1°C

12. Temperature gradient in the rib
Rib simulation
230 W for the ring splitted in 64 heating areas (2x2,5cm²)
10°C imposed
Rib made in aluminium 6060 (209W/m.K)
is 2 mm thick
2 W on each face
Temperature gradient in the rib = 6°C
Example: If the chiller is set at 10°C then the electronics temperature will be between 16°C and 21°C along the cooling circuit

13. Mounting principle Mounting tool
Each sector is mounted one by one on the mounting tool and fixed to its neighbour
No space to add a back support for the detectors
Auto-stability of the ring

14. MUGAST configuration

15. MUGAST with AGATA
VAMOS side
Beam entrance

16. MUGAST chamber (Preliminary design)
760 mm in diameter

17. MUST2 electronics around Si detectors
MUST2 electronics for TRACE
MUST2 electronics for trapezoids

18. MUST2 electronics on one trapezoid
Cabling to check to reduce the bend
Cooling block to change the tubes shapes
Kapton 10 cm
Kapton 20 cm

19. Gamma
AGATA modules
PARIS clusters

20. MUST2 detectors configuration
Backward configuration
Forward configuration

21. Special chamber without chymene

22. Special chamber without chymene

23. Thank you for your attention