1. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) LSD prototype status and lessons: The ribs were placed under the top layer -> no more punching of the layers -> gain of space Volume and weight -> Dia max 320 mm, ~ 30 kg Hole opening on top of the tank -> Dia 360 mm, hand milling machine Simple hinge system -> Lower the overall cost -> add some rivets, ribs with flate end, anti-rotation cotter pin Opening tests -> Shrouds system Ok, max strength = 190 daN! To be defined: Size and watertightness of the hole on the tank liner Strength needed to open the LSD in water Mechanism used to open the LSD into the tank -> combination btw pulling on the hinges and pushing on the central tube

2. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) The ribs are now placed under the top layer Before Now

3. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) 320 mm Volume and weight 320 mm Total weight: 30 kg

4. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) Compass hand milling machine Tank hole drilling 360 mm

5. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) Add of rivet Before Now Anti rotation cotter pins Hinge sytem

6. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) 1550 mm

7. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) 1550 mm tank liner

8. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) 550 1200 Liner opening, liner watertightness (to be defined) Actual proposition: Introduction of a large foldaway flange Gluing of the flange on the liner Cutting out the liner (Flange = pattern) 2 half flanges are placed at the inner part of the liner Flanges screwing = the liner is in sandwich btw flanges

9. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) Mechanism used to open the LSD into the tank (to be defined) combination btw pulling on the hinges and pushing on the central tube

10. 22 Octobre 2013Réunion LSD – Grenoble/Paris @ LPSCJF MURAZ LSD Prototype (Layered Surface Detector) Strength required to keep the LSD opened : 16,5 daN (46,5 – 30)