HB2023 - Table of Session: WEC1C (Contributed Presentations WG E)

Paper	Title	Page
WEC1C1	Improvement Design of a Beam Current Monitor Based on a Passive Cavity Under Heavy Heat Load and Radiation	205
	P.-A. Duperrex, J.E. Bachmann, M. Rohrer, J.L. Sunpresenter PSI, Villigen PSI, Switzerland
	The High Intensity Proton Accelerator at PSI delivers a continuous proton beam of up to 2.4 mA with a maximum energy of 590 MeV to two meson production targets, M and E, and then to the spallation target. Eight meters downstream from the target E located a beam current monitor MHC5, which endure intensive scattered particles from Target E and cause large temperature variation, further induce operation and calibration problems. To address these issues, a graphite monitor was designed to replace the older aluminum one. Based on years of operation experiences of this graphite cavity, improvement design has been also considered, including beam positon pickups refinement, on-line calibration methods implementation, as well as manipulation maintenance issues. Detailed aspects of the performance of the monitor and its improvement design will be presented in this paper.
	Slides WEC1C1 [4.024 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC1C1
About •	Received ※ 01 October 2023 — Revised ※ 04 October 2023 — Accepted ※ 09 October 2023 — Issued ※ 16 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEC1C2	Challenges of Target and Irradiation Diagnostics of the IFMIF-DONES Facility	210
	C. Torregrosa, J. Maestre, A. Roldán, J. Valenzuela, I. Álvarez Castro UGR, Granada, Spain F. Arbeiter, Y.F. Qiu KIT, Eggenstein-Leopoldshafen, Germany S. Becerril-Jarque, A. Ibarra, I. Podadera Consorcio IFMIF-DONES España, Granada, Spain B. Brenneis Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany L. Buligins IPUL, Salaspils, Latvia J. Castellanos Universidad de Castilla-La Mancha, Ciudad Real, Spain N. Chauvin CEA-IRFU, Gif-sur-Yvette, France S. Fiore CERN, GENEVA, Switzerland D. Jimenez-Rey, F. Mota, C. Oliver, D. Regidor, C. de la Morena CIEMAT, Madrid, Spain J. Martínez, P. Matia-Hernando, T. Siegel ASE Optics, El Prat De Llobregat, Spain F.S. Nitti ENEA Brasimone, Centro Ricerche Brasimone, Camugnano, BO, Italy T. Tadic RBI, Zagreb, Croatia U. Wiacek IFJ-PAN, Kraków, Poland
	Funding: This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme Grant Agreement No 101052200 EUROfusion IFMIF-DONES will be a first-class scientific infrastructure consisting of an accelerator-driven neutron source delivering 1e17 n/s with a broad peak at 14 MeV. Such neutron flux will be created by impinging a continuous wave 125 mA, 40 MeV, 5 MW deuteron beam onto a liquid Li jet target, circulating at 15 m/s. Material specimens subjected to neutron irradiation will be placed a few millimeters downstream. Some of the most challenging technological aspects of the facility are the Diagnostics to monitor the Li jet, beam parameters on target, and characterization of the neutron irradiation field, with transversal implications in the scientific exploitation, machine protection and safety. Multiple solutions are foreseen, considering among others, Li jet thickness measurement methods based on optical metrology and millimeter-wave radar techniques, Li electromagnetic flowmeters, beam footprint measurements based on residual gas excitation, online neutron detectors such as SPNDs and micro-fission chambers, as well as offline neutron fluence measurements by activation foils or spheres. This contribution provides an overview of these aspects and the associated R&D activities.
	Slides WEC1C2 [4.676 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC1C2
About •	Received ※ 11 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Improvement Design of a Beam Current Monitor Based on a Passive Cavity Under Heavy Heat Load and Radiation

205

P.-A. Duperrex, J.E. Bachmann, M. Rohrer, J.L. Sunpresenter
PSI, Villigen PSI, Switzerland

The High Intensity Proton Accelerator at PSI delivers a continuous proton beam of up to 2.4 mA with a maximum energy of 590 MeV to two meson production targets, M and E, and then to the spallation target. Eight meters downstream from the target E located a beam current monitor MHC5, which endure intensive scattered particles from Target E and cause large temperature variation, further induce operation and calibration problems. To address these issues, a graphite monitor was designed to replace the older aluminum one. Based on years of operation experiences of this graphite cavity, improvement design has been also considered, including beam positon pickups refinement, on-line calibration methods implementation, as well as manipulation maintenance issues. Detailed aspects of the performance of the monitor and its improvement design will be presented in this paper.

Slides WEC1C1 [4.024 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC1C1

About •

Received ※ 01 October 2023 — Revised ※ 04 October 2023 — Accepted ※ 09 October 2023 — Issued ※ 16 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEC1C2

Challenges of Target and Irradiation Diagnostics of the IFMIF-DONES Facility

210

C. Torregrosa, J. Maestre, A. Roldán, J. Valenzuela, I. Álvarez Castro
UGR, Granada, Spain
F. Arbeiter, Y.F. Qiu
KIT, Eggenstein-Leopoldshafen, Germany
S. Becerril-Jarque, A. Ibarra, I. Podadera
Consorcio IFMIF-DONES España, Granada, Spain
B. Brenneis
Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
L. Buligins
IPUL, Salaspils, Latvia
J. Castellanos
Universidad de Castilla-La Mancha, Ciudad Real, Spain
N. Chauvin
CEA-IRFU, Gif-sur-Yvette, France
S. Fiore
CERN, GENEVA, Switzerland
D. Jimenez-Rey, F. Mota, C. Oliver, D. Regidor, C. de la Morena
CIEMAT, Madrid, Spain
J. Martínez, P. Matia-Hernando, T. Siegel
ASE Optics, El Prat De Llobregat, Spain
F.S. Nitti
ENEA Brasimone, Centro Ricerche Brasimone, Camugnano, BO, Italy
T. Tadic
RBI, Zagreb, Croatia
U. Wiacek
IFJ-PAN, Kraków, Poland

Funding: This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme Grant Agreement No 101052200 EUROfusion
IFMIF-DONES will be a first-class scientific infrastructure consisting of an accelerator-driven neutron source delivering 1e17 n/s with a broad peak at 14 MeV. Such neutron flux will be created by impinging a continuous wave 125 mA, 40 MeV, 5 MW deuteron beam onto a liquid Li jet target, circulating at 15 m/s. Material specimens subjected to neutron irradiation will be placed a few millimeters downstream. Some of the most challenging technological aspects of the facility are the Diagnostics to monitor the Li jet, beam parameters on target, and characterization of the neutron irradiation field, with transversal implications in the scientific exploitation, machine protection and safety. Multiple solutions are foreseen, considering among others, Li jet thickness measurement methods based on optical metrology and millimeter-wave radar techniques, Li electromagnetic flowmeters, beam footprint measurements based on residual gas excitation, online neutron detectors such as SPNDs and micro-fission chambers, as well as offline neutron fluence measurements by activation foils or spheres. This contribution provides an overview of these aspects and the associated R&D activities.

Slides WEC1C2 [4.676 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC1C2

About •

Received ※ 11 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)