1. Neutrino Factory Target Vessel Concept Update V. Graves Target Studies EVO June 12, 2012

2. 2Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Review – IPAC Paper Concept Double-wall container for mercury containment Inner container is a hollow SS shell filled with He-cooled W beads – Actually provides triple-wall mercury containment in most areas Issue is that it allows Hg to leak into a shielding container that is not part of the mercury system Next step: move outer Hg containment wall inside W, segregate mercury containment and shielding functions Tungsten Beads

3. 3Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Inner Tungsten Shielding Helium outlet Mercury Vessel Helium inlet Mercury Vessel Helium outlet Inner Tungsten Shielding Helium inlet Hg return Beam pipe Hg drain Hg jet inlet Hg chamber vent line Maintenance Handle Prior Concept

4. 4Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Helium outlet Helium inlet Hg return Beam pipe Hg drain Hg jet inlet Hg chamber vent line Prior Concept

5. 5Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Updated Concept – Separate Mercury Containment from Shielding Downstream Beam Window Double wall mercury containment inside tungsten shielding chambers Mercury Pool

6. 6Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Segmented Mercury Interstitial Space Upstream View From Hg Pool Upstream View Before Hg Pool

7. 7Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Mercury and Shielding Modules

8. 8Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Double-Wall Supply & Return Piping Mercury requires double containment outside the mercury equipment cell

9. 9Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Double Containment Piping Pin-hole drains for leaks Nozzle Inlet Mercury Drain Piping

10. 10Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Mercury Module Extraction

11. 11Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Cryostat Modules Now have three distinct modules within the first cryostat Could combine the shielding modules into one

12. 12Managed by UT-Battelle for the U.S. Department of Energy Target Vessel Update 12 June 2012 Comments Isolating the mercury module from the shielding makes remote handling simpler Still a very complicated geometry and mechanically difficult to fabricate How much heat energy does this new mercury module have to dissipate?