Task #3 100kW Targets

Direct Target Stations Task #3 Status report Presented by L.Bruno

The 100 kW Targets Design Study

Task #3 100kW Targets

OUTLINE 1. Design approach 2. Validation by test #1: “Tarpipe” 3. Validation by test #2: “Bi-valve” 4. Status & outlook

Task #3 Approach

Task #3 100kW Targets

Task #3 aims at mastering the key elements (physical models and numerical tools) to perform the EURISOL direct target design study. Experiments are under way to validate the design choices. The Feasibility Report about the 100kW direct targets has been published. There is no identified show stopper The CERN Engineering Data Management System (EDMS) is being used to collect, consolidate and share (even outside CERN ! ) working documents.

Reference parameters

Task #3 100kW Targets

Example: Ta foil target principle Four benchmark “target units” have been chosen to perform the design study. Engineering parameters are available and the first study iteration has started: numerical simulations are on-going and Task #5 (M.Felcini) is already contributing.

The “TARPIPE” set-up

Task #3 100kW Targets

A mock-up has been built to test the response of target material under proton irradiation at high temperature. The chosen samples are: Oxides @1200ºC, SiC @1600ºC, C nanomaterials @2000ºC, Metal @1700ºC

The “TARPIPE” mock-up

Task #3 100kW Targets

Four target containers will be irradiated at the 72 MeV proton cyclotron at PSI to simulate the expected damage by a nominal EURISOL beam. The test is scheduled to end by March 2007. Post-irradiation analysis will be carried out at the PSI.

Transfer line prototype

Task #3

The “Bi-valve” principle Transfer line

100kW Targets

Bellows Cu body

Ion source Target

ISOLDE MK7 Ion source

Heat Valves screen

Courtesy of S.Marzari

A transfer line prototype (the “Bi-valve”) is being manufactured to assess whether multiple target container can be coupled together. All-metal valves driven by a pneumatic actuator have been chosen to (un)select the active target.

Tandem target

Transfer line prototype

The “Bi-valve” mock-up The all-metal valves

Task #3 100kW Targets

The tandem target

The « Bi-valve » The vacuum vessel

Courtesy of S.Marzari Sub-assemblies of the “Bi-valve” transfer line have been manufactured. Assembly is well under way aiming at online tests in Nov 2006/Apr 2007 at CERN-ISOLDE .

Status & Outlook

Task #3 100kW Targets

Engineering solutions exist for ISOL 100 kW targets Compact target assemblies, closely-packed shielding, vertical handling by crane, hot cell design,... Four benchmark targets are being developed;

Radiation hazard is recognized as the key issue Multiple containment levels, primary vacuum to avoid air activation, reduced fluid inventories, remote handling strategies...

Next step: to collect and integrate the requirements A functional specification is in work and will be issued shortly; A draft engineering specification is being prepared and distributed for comments; A system to manage and share in-work documents is needed at the EURISOL level - We need your feed-back !!! ;

CERN Engineering Data Management System is used Interaction with Task #5 (M.Felcini) has started; Interaction with Task #7 is about to start; We need official “interfaces” (representatives) from each task to share, develop, validate consistently our ideas