Report on contactswith CRIOTEC

Internal meeting 31/01/2007

Top part

Central part

Bottom part

More details

Vacuum system:

all pumps available at LHEP

CRIOTEC answered on January 16: they agrees on all the technical options we proposed. Here below their ideas in particular on the recirculation loop not present in our drawings.

CRIOTEC did not provide any detailed drawing in addition to ours. They would however give us the executive drawings with all the detailed mechanical and thermo-dynamical calculations, if we decide to accept their offer

Their planning…

- CRIOTEC is very interested in the project and ready to accept hints and suggestions, as well as collaboration with other companies for reducing the costs. They are mainly interested in the technical studies and strongly suggest to buy ourselves all components they have to buy from other companies. This could allow us to save quite a lot.

- However, we requested a second offer to CARBAGAS (Air Liquid CH). They forwarded the request to Cryotherm GmbH & Co. KG, Germany, specialized in dewar construction.

- We also have an independent offer for the cryogenic pump (Barber&Nichols) as well as offers for filters from Messer Schweiz AG. They are ready to deliver at least 2 sets of large filters with any type of connection in 2 weeks.

Criotec offer breakdown and actions

Pure Liquid Argon Cryostat [Euro] CRIOTC Supplier/

person on charge

Action [Euro] projected

Delivery time

Inner vessel tube (no flange) 2910 LHEP (Husch, Stefan) Cryotherm offer (1week) ?

Annular vessel tube (no flange) 4019 LHEP (Husch, Stefan) “ ?

Vacuum vessel tube (no flange) 4357 LHEP (Husch, Stefan) “ ?

All flanges 11010 LHEP (Husch, Stefan) “ ?

Design and Manufacture 30904 CRIOTEC No action <2 months

Transport 2000 No action

subTotal 55200

Purification Loop

Oxysorb/hydrosorb cartridges 4800 (1 set) MESSER (Marcello) Independent offer 6376 (2 set) 2 weeks

Cryogenic pump 26400 Barber&Nichols( Marcello) Independent offer > 19650

Control panel 9456 LHEP (Max, Biagio) Biild at LHEP ? ~ 5000

Insulation valves 2200 LHEP (Marcello) Do do independent offer ~ 2000

Instrumentation:

Level meter, fluxmeter

13220 Granada+LHEP

(A.Bueno, Marcello)

Build at LHEP/Granada ?

~ 8000

Design and Manufacture 16769 CRIOTEC No action <2 months

subTotal 72845

Total 128945

Toatal with 10% offered discount 116050 ~100000

Note: CRYOTHERM is only expected to provide the dewar and the inner tube

Late contacts with CRIOTEC

We required(30/01) to CRIOTEC a more detailed drawing or a preliminary project were more technical details are discussed. They answered positively to our request and asked for few days to answer about the timing and if we need to pay any moneys for this second step.They also said that are ready to invest in terms of work on this project and to postpone any moneys request in casewe give the commission of the project.

Mechanical test with rings at LHEP

Contacts with HBB Biegetechnikable to make the rings

Order placed (receive rings in 2 weeks)

Soon after realize the prototype

LN

Vacuumpump

Artank

Artank

Oxysorb

Hydrosorb

Oxysorb

Hydrosorb

Possible operation scheme