1. Status of material tests
G. Arnau Izquierdo
LHC Collimators Phase II, CDM

2. Molybdenum plates, for the Rib
Framework
Need according to last design version of the Rib:15 x 50 x 1100 mm³
Standard dimensions at Plansee:
10 x 500 x 600 , x 400 x 600 and 20 x 400 x 600
Special fabrication 15 (±5%) x 50 (±2) x 1100 (+5/-0) possible
Guaranteed flatness 1.5 mm
Dull surface (hot rolled and pickled)
Minimum order 11 units, price €/kg
Delivery time 8 weeks a.r.o.
Order placed for a plate 20x50x400 mm³ for tests
262 €/kg, €
Delivery ex works
Tests foreseen
Machining: hippodrome holes for shafts, surfacing, threaded holes?
Welding?
Dimensional stability. What machining?, what thermal cycle ?
Outgassing after machining + standard cleaning. What cleaning ?
Other? Mechanical tests of pin and screw assemblies, …
LHC Collimators Phase II, CDM

3. Mo screws
LHC Collimators Phase II, CDM

4. Molybdenum tube, for the Cooling Coil
Framework
Need according to last design version
OD10 x 1 x mm
Tight bending Rmin = 1.8 x OD
Standard dimension at Plansee
Max length ~3000 mm  a weld is needed to get 3750 mm
Impossible to bend to requirement
Order placed for tube in stock
Two tubes 1260 mm mm
2460 €/kg, 2079 €
Delivery expected from
Tests foreseen
bending
welding
If successful, Cu-coating and casting of Cu-diamond
LHC Collimators Phase II, CDM

5. Diamond composites, for the Jaw
Preliminary tests of UHV coampatibility
Two samples of Cu-D and Al-D proposed by L. Weber.
Ready available, irregular shape
Outgassing tests made by I. Wevers
Cu-D: 2x torr·l·s-1·cm-2
Al-D: torr·l·s-1·cm-2
Preliminary results compatible with standard UHV use
Further steps
Functionally interesting?
Study feasibility of required dimensions
Tests foreseen
Thick coating for machining
Brazing to ceramics and to copper
Radiation effect on properties
Other…
5mm
LHC Collimators Phase II, CDM