22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF 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

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

The ribs are now placed under the top layer

Before

Now

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

320 mm

Volume and weight

320 mm

Total weight: 30 kg

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

Compass hand milling machine

Tank hole drilling

360 mm

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

Add of rivetBefore

Now

Anti rotation cotterpins

Hinge sytem

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

1550 mm

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

1550 mm

tank

liner

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF 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

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF 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

22 Octobre 2013 Réunion LSD – Grenoble/Paris @ LPSC JF MURAZ

LSD Prototype(Layered Surface Detector)

Strength required to keep the LSD opened : 16,5 daN (46,5 – 30)