IPAC2012 - List of Authors (Stewart, S.E.)

Paper	Title	Page
WEPPC106	The First ASME Code Stamped Cryomodule at SNS	2465
	M.P. Howell, D.R. Bruce, M.T. Crofford, D.L. Douglas, S.-H. Kim, S.E. Stewart, W.H. Strong ORNL, Oak Ridge, Tennessee, USA R. Afanador, B.S. Hannah, J. Saunders ORNL RAD, Oak Ridge, Tennessee, USA J.D. Mammosser JLAB, Newport News, Virginia, USA
	The first spare cryomodule for the Spallation Neutron Source (SNS) has been designed, fabricated, and tested by SNS personnel. The approach to design for this cryomodule was to hold critical design features identical to the original design such as bayonet positions, coupler positions, cold mass assembly, and overall footprint. However, this is the first SNS cryomodule that meets the pressure requirements put forth in the 10 CFR 851: Worker Safety and Health Program. The most significant difference is that Section VIII of the ASME Boiler and Pressure Vessel Code was applied to the vacuum vessel of this cryomodule. Applying the pressure code to the helium vessels within the cryomodule was considered. However, it was determined to be schedule prohibitive because it required a code case for materials that are not currently covered by the code. Good engineering practice was applied to the internal components to verify the quality and integrity of the entire cryomodule. The design of the cryomodule, fabrication effort, and cryogenic test results will be reported in this paper.

WEPPC108	Status of SRF Facilities at SNS	2471
	J. Saunders, R. Afanador, T. Xu ORNL RAD, Oak Ridge, Tennessee, USA M.T. Crofford, M.P. Howell, S.-H. Kim, S.E. Stewart ORNL, Oak Ridge, Tennessee, USA
	SNS has recognized the need for developing in-house capability to ensure long term sustainability of the SCL. SNS has made substantial gains in the last 6 years in understanding SCL operation, including system and equipment limiting factors, and resolution of system and equipment issues. Significant effort and focus is required to assure ongoing success in the operation, maintenance, and improvement of the SCL and to address the requirements of the upgrade project for the Second Target Station. This interdependent effort includes implementation of demonstrated improvements, fabrication of spare cryomodules, cavity R&D to enhance machine performance, and related SRF facility developments. Cryomodule and vertical cavity testing facilities are being developed to demonstrate process capabilities and to further understand the collective limitations of installed cavities. The status and future plans for SRF facilities at SNS will be presented.

Paper

Title

Page

The First ASME Code Stamped Cryomodule at SNS

2465

M.P. Howell, D.R. Bruce, M.T. Crofford, D.L. Douglas, S.-H. Kim, S.E. Stewart, W.H. Strong
ORNL, Oak Ridge, Tennessee, USA
R. Afanador, B.S. Hannah, J. Saunders
ORNL RAD, Oak Ridge, Tennessee, USA
J.D. Mammosser
JLAB, Newport News, Virginia, USA

The first spare cryomodule for the Spallation Neutron Source (SNS) has been designed, fabricated, and tested by SNS personnel. The approach to design for this cryomodule was to hold critical design features identical to the original design such as bayonet positions, coupler positions, cold mass assembly, and overall footprint. However, this is the first SNS cryomodule that meets the pressure requirements put forth in the 10 CFR 851: Worker Safety and Health Program. The most significant difference is that Section VIII of the ASME Boiler and Pressure Vessel Code was applied to the vacuum vessel of this cryomodule. Applying the pressure code to the helium vessels within the cryomodule was considered. However, it was determined to be schedule prohibitive because it required a code case for materials that are not currently covered by the code. Good engineering practice was applied to the internal components to verify the quality and integrity of the entire cryomodule. The design of the cryomodule, fabrication effort, and cryogenic test results will be reported in this paper.

WEPPC108

Status of SRF Facilities at SNS

2471

J. Saunders, R. Afanador, T. Xu
ORNL RAD, Oak Ridge, Tennessee, USA
M.T. Crofford, M.P. Howell, S.-H. Kim, S.E. Stewart
ORNL, Oak Ridge, Tennessee, USA

SNS has recognized the need for developing in-house capability to ensure long term sustainability of the SCL. SNS has made substantial gains in the last 6 years in understanding SCL operation, including system and equipment limiting factors, and resolution of system and equipment issues. Significant effort and focus is required to assure ongoing success in the operation, maintenance, and improvement of the SCL and to address the requirements of the upgrade project for the Second Target Station. This interdependent effort includes implementation of demonstrated improvements, fabrication of spare cryomodules, cavity R&D to enhance machine performance, and related SRF facility developments. Cryomodule and vertical cavity testing facilities are being developed to demonstrate process capabilities and to further understand the collective limitations of installed cavities. The status and future plans for SRF facilities at SNS will be presented.