IPAC2011 - List of Authors (Arranz, F.)

Paper	Title	Page
TUPS044	Recent Developments on the IFMIF/EVEDA Beam Dump Cooling Circuit	1632
	M. Parro, F. Arranz, B. Brañas, D. Iglesias, D. Rapisarda CIEMAT, Madrid, Spain
	During the IFMIF/EVEDA activities a conical dump made of copper has been designed to stop the 125 mA, 9 MeV, D⁺ beam. This element will receive a total power of ~1 MW. It is cooled by a high velocity water flow that circulates through an annular channel along the outer surface of the cone. The coolant composition must be defined taking into account corrosion and erosion phenomena. Also, as important neutron and gamma fluxes are generated in the beam stop, the activation of corrosion products and the water radiolysis must be considered. During commissioning of the accelerator, pulsed beams with low duty cycle will be used and therefore the power will be significantly lower than the nominal one. With the double aim of minimizing erosion and of reproducing the full power margin to local boiling (used as safety interlock) it is planned to use flows lower than the nominal one. This work will present the different operation scenarios and the coolant composition choice performed.

THPS059	Thermo-mechanical Design of Particle-stopping Devices at the High Energy Beamline Sections of the IFMIF/EVEDA Accelerator	3562
	D. Iglesias, F. Arranz, B. Brañas, J.M. Carmona, N. Casal, A. Ibarra, C. Oliver, M. Parro, I. Podadera, D. Rapisarda CIEMAT, Madrid, Spain
	Funding: Work partially supported by Spanish Ministry of Science and Innovation under project AIC10-A-000441 and ENE2009-11230. The IFMIF/EVEDA linear accelerator is a 9 MeV, D⁺ prototype for the validation of the 40 MeV final IFMIF design. The high intensity, 125 mA CW, high power beam (1.125 MW) produces an extremely high thermal load in all the elements intercepting the ions. Independently of the final purpose of each device, if its working conditions imply stopping a non-negligible amount of particles, the associated thermal solicitation greatly determines the design constraints. The present work will summarize a thermo-mechanical design workflow that can be applied to any beam facing element of high current accelerators and its application in beam dump, scrappers and slits design. This approach is based on analysis experiences at the IFMIF/EVEDA project and, while taking into account the particularities of each device, uses the same tools and parameter evaluation criteria for all of them. It has been applied successfully to recent designs, effectively reducing the number of iterations before achieving a valid thermo-mechanical behavior. Results of each design and the concrete advantages of this approach will be detailed.

Paper

Title

Page

Recent Developments on the IFMIF/EVEDA Beam Dump Cooling Circuit

1632

M. Parro, F. Arranz, B. Brañas, D. Iglesias, D. Rapisarda
CIEMAT, Madrid, Spain

During the IFMIF/EVEDA activities a conical dump made of copper has been designed to stop the 125 mA, 9 MeV, D⁺ beam. This element will receive a total power of ~1 MW. It is cooled by a high velocity water flow that circulates through an annular channel along the outer surface of the cone. The coolant composition must be defined taking into account corrosion and erosion phenomena. Also, as important neutron and gamma fluxes are generated in the beam stop, the activation of corrosion products and the water radiolysis must be considered. During commissioning of the accelerator, pulsed beams with low duty cycle will be used and therefore the power will be significantly lower than the nominal one. With the double aim of minimizing erosion and of reproducing the full power margin to local boiling (used as safety interlock) it is planned to use flows lower than the nominal one. This work will present the different operation scenarios and the coolant composition choice performed.

THPS059

Thermo-mechanical Design of Particle-stopping Devices at the High Energy Beamline Sections of the IFMIF/EVEDA Accelerator

3562

D. Iglesias, F. Arranz, B. Brañas, J.M. Carmona, N. Casal, A. Ibarra, C. Oliver, M. Parro, I. Podadera, D. Rapisarda
CIEMAT, Madrid, Spain

Funding: Work partially supported by Spanish Ministry of Science and Innovation under project AIC10-A-000441 and ENE2009-11230.
The IFMIF/EVEDA linear accelerator is a 9 MeV, D⁺ prototype for the validation of the 40 MeV final IFMIF design. The high intensity, 125 mA CW, high power beam (1.125 MW) produces an extremely high thermal load in all the elements intercepting the ions. Independently of the final purpose of each device, if its working conditions imply stopping a non-negligible amount of particles, the associated thermal solicitation greatly determines the design constraints. The present work will summarize a thermo-mechanical design workflow that can be applied to any beam facing element of high current accelerators and its application in beam dump, scrappers and slits design. This approach is based on analysis experiences at the IFMIF/EVEDA project and, while taking into account the particularities of each device, uses the same tools and parameter evaluation criteria for all of them. It has been applied successfully to recent designs, effectively reducing the number of iterations before achieving a valid thermo-mechanical behavior. Results of each design and the concrete advantages of this approach will be detailed.