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Title: Spallation Neutron Source SNS Diamond Stripper Foil Development

Abstract

Diamond stripping foils are under development for the SNS. Freestanding, flat 300 to 500 {micro}g/cm{sup 2} foils as large as 17 x 25 mm{sup 2} have been prepared. These nano-textured polycrystalline foils are grown by microwave plasma-assisted chemical vapor deposition in a corrugated format to maintain their flatness. They are mechanically supported on a single edge by a residual portion of their silicon growth substrate; fine foil supporting wires are not required for diamond foils. Six foils were mounted on the SNS foil changer in early 2006 and have performed well in commissioning experiments at reduced operating power. A diamond foil was used during a recent experiment where 15 {micro}C of protons, approximately 64% of the design value, were stored in the ring. A few diamond foils have been tested at LANSCE/PSR, where one foil was in service for a period of five months (820 C of integrated injected charge) before it was replaced. Diamond foils have also been tested in Japan at KEK (640 keV H{sup -}) where their lifetimes slightly surpassed those of evaporated carbon foils, but fell short of those for Sugai's new hybrid boron carbon (HBC) foils.

Authors:
 [1];  [1];  [1];  [2];  [3];  [4];  [4];  [4]
  1. ORNL
  2. University of Tennessee, Knoxville (UTK)
  3. Los Alamos National Laboratory (LANL)
  4. High Energy Accelerator Research Organization, KEK
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
982100
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference 07, Albuquerque, NM, USA, 20070625, 20070629
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; ACCELERATORS; BEAM STRIPPERS; BORON; CARBON; CHEMICAL VAPOR DEPOSITION; COMMISSIONING; DESIGN; DIAMONDS; NEUTRON SOURCES; PROTONS; SILICON; SPALLATION; diamond stripper foil

Citation Formats

Shaw, Robert W, Plum, Michael A, Wilson, Leslie L, Feigerle, Charles S., Borden, Michael J., Irie, Y., Sugai, I, and Takagi, A. Spallation Neutron Source SNS Diamond Stripper Foil Development. United States: N. p., 2007. Web.
Shaw, Robert W, Plum, Michael A, Wilson, Leslie L, Feigerle, Charles S., Borden, Michael J., Irie, Y., Sugai, I, & Takagi, A. Spallation Neutron Source SNS Diamond Stripper Foil Development. United States.
Shaw, Robert W, Plum, Michael A, Wilson, Leslie L, Feigerle, Charles S., Borden, Michael J., Irie, Y., Sugai, I, and Takagi, A. Mon . "Spallation Neutron Source SNS Diamond Stripper Foil Development". United States. doi:.
@article{osti_982100,
title = {Spallation Neutron Source SNS Diamond Stripper Foil Development},
author = {Shaw, Robert W and Plum, Michael A and Wilson, Leslie L and Feigerle, Charles S. and Borden, Michael J. and Irie, Y. and Sugai, I and Takagi, A},
abstractNote = {Diamond stripping foils are under development for the SNS. Freestanding, flat 300 to 500 {micro}g/cm{sup 2} foils as large as 17 x 25 mm{sup 2} have been prepared. These nano-textured polycrystalline foils are grown by microwave plasma-assisted chemical vapor deposition in a corrugated format to maintain their flatness. They are mechanically supported on a single edge by a residual portion of their silicon growth substrate; fine foil supporting wires are not required for diamond foils. Six foils were mounted on the SNS foil changer in early 2006 and have performed well in commissioning experiments at reduced operating power. A diamond foil was used during a recent experiment where 15 {micro}C of protons, approximately 64% of the design value, were stored in the ring. A few diamond foils have been tested at LANSCE/PSR, where one foil was in service for a period of five months (820 C of integrated injected charge) before it was replaced. Diamond foils have also been tested in Japan at KEK (640 keV H{sup -}) where their lifetimes slightly surpassed those of evaporated carbon foils, but fell short of those for Sugai's new hybrid boron carbon (HBC) foils.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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