LLNL-TR-427769 Electron Positron Proton Spectrometer for use at Laboratory for Laser Energetics S. L. Ayers April 13, 2010
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EDSN10-000004-AA Page 1 of 51 Engineering Directorate Safety Note Electron Positron Proton Spectrometer for use at LLE EDSN10-000004-AA Prepared by: Date: Shannon Ayers Mechanical Engineer Applied Physics Division Reviewed by: Date: Robert Murray Civil Engineer Laser Systems Engineering and Operations Division Reviewed by: Date: Allen House Responsible Individual National Security Engineering Division Approved by: Date: Joel Bowers Division Leader Technology Resource Engineering Division Distribution: Allen Elsholz Allen House Joel Bowers Scott Winters Bob Murray (L-340) (L-168) (L-113) (L-447) (L-113) Bob Heeter (L-472) LSEO Office (L-447) Riccardo Tommasini (L-399) Document Approval and ECMS Proxy Authorization Your signature acknowledges that you have read and approved the contents of EDSN10-000004-AA, Electron Positron Proton Spectrometer for use at LLE. Furthermore, your signature authorizes Tonya Dye of the Laser Systems Engineering and Operations Division of the Engineering Directorate as your proxy for ECMS record approval of this document. If proxy is not authorized, you must approve this document electronically in ECMS.
EDSN10-000004-AA Page 2 of 51 Table of Contents Section A Scope and Equipment (or System) Description... 3 Section B Operational Hazards... 4 Section C Operational Procedure... 4 Section D Design Calculations... 4 Section E - Testing Requirements... 8 Section F Labeling Requirements... 8 Section G Associated Procedures... 8 Section H References... 8 Appendix A Calculations... 9 Appendix B Counter Weight... 33 Appendix C EPPS Drawings... 36
EDSN10-000004-AA Page 3 of 51 Section A Scope and Equipment (or System) Description The Electron Positron Proton Spectrometer (EPPS) is mounted in a TIM (Ten-Inch Manipulator) system on the Omega-60 or Omega-EP laser facilities at the University of Rochester, Laboratory for Laser Energetics (LLE), when in use, see Fig. 1. The Spectrometer assembly, shown in Fig. 2, is constructed of a steel box containing magnets, surrounded by Lead 6% Antimony shielding with SS threaded insert, sitting on an Aluminum 6061-T6 plate. Fig. 1. The EPPS with TIM interface Fig. 2. The EPPS assembly To meet LLE TIM moment loading requirements, a counter-weight is added when the diagnostic is mounted in the TIM, see Fig. 3. For moving the diagnostic a two person lifting handle is used, see Fig. 4. Fig. 3. The EPPS with counter weight and pointer, mount in TIM Boat Fig. 4. The EPPS with TIM interface and lifting handle
EDSN10-000004-AA Page 4 of 51 Section B Operational Hazards Failure of the EPPS device or device mechanical support components could cause injury to personnel, damage to equipment, and may have significant impact on programmatic schedule and cost. There are no electrical hazards in the EPPS device. Section C Operational Procedure Use of the EPPS at LLE is governed by LLE procedure D-TX-P-016. Section D Design Calculations The analyses of the EPPS as compiled in this safety note can be split up into the following subsystems: The TIM Interface, the EPPS and TIM Mounting Interface, and the EPP Spectrometer Assembly. Each of these subsystems contains numerous load path elements as enumerated in Fig. 5 and Table 1. Fig. 5a. EPPS Load Path elements. Fig. 5b. EPPS Load Path elements, sectioned side view of spectrometer.
EDSN10-000004-AA Page 5 of 51 Table 1: Load path elements. 1 TIM Mounting Rail (Left mounting rail, TIM mounting) to TIM Boat Fourteen 10-32 SS fasteners 2 TIM Mounting Rail to TIM Mounting Frame (Arm, Twelve 10-32 SS TIM mounting) fasteners 3 TIM Mounting Frame (Arm, TIM mounting) to Support Six 10-32 SS Plate (Support plate TIM mounting) fasteners 4 Support Plate (Support plate TIM mounting) to Side Four 10-32 SS Plate fasteners 5 Hoist Ring to Lifting Bracket One ½ -13 fastener 6 Lifting Bracket to Side Plate Four 10-32 SS fasteners 7 Lifting Handle to Lifting Bracket Two 3/8-16 SS fasteners App. A App. A App. A App. A App. A App. A App. A The TIM boat structure is outside of the scope of this safety note. This safety note includes everything from the mounting to the TIM boat to the spectrometer. The following table lists the factors of safety for each load path item: Table 2: Factors of safety for the EPPS. Configurations Stress Yield (ksi) Stress (ksi) 1.1 TIM Rail/ TIM Boat Bolt Stress, von Mises 1.2 TIM Rail/ TIM Boat Tapped Holes, Shear 1.1a TIM Rail/ TIM Boat Bolt Stress, von Mises 2.1 TIM Frame/ TIM Rail Bolt Stress, von Mises 2.2 TIM Frame/ TIM Rail Tapped Holes, Shear 2.1a TIM Frame/ TIM Rail Bolt Stress, von Mises 3.1 TIM Frame/ Support Plate Bolt Stress, von Mises 3.2 TIM Frame/ Support Plate Tapped Holes, Shear Ultimate Stress (ksi) Safety Factor (yield) Safety Factor (Ult) Required Safety Factor* 1.16 30.0 25.9 3 SY 5.01 20.2 4.0 3 SY 1.41 30.0 21.3 1 SSY 2.29 30.0 13.1 3 SY 3.56 20.2 5.7 3 SY 3.07 30.0 9.8 1 SSY 0.72 30.0 41.9 3 SY 2.86 20.2 7.1 3 SY
EDSN10-000004-AA Page 6 of 51 Configurations Stress (ksi) Yield Stress (ksi) Ultimate Stress (ksi) Safety Factor (yield) 3.1a TIM Frame/ Support Plate Bolt Stress, von Mises 4.2 TIM Plate/ Side Plate Tapped Holes, Shear 4.1a TIM Plate/ Side Plate Bolt Stress, von Mises 5.1 Hoist Ring/ Lifting Bracket Tapped Holes, Shear 5.1 Hoist Ring/ Lifting Bracket Tapped Holes, Shear 6.1 Lifting Bracket/ Side Plate Bolt Stress, von Mises 6.2 Lifting Bracket/ Side Plate Tapped Holes, Shear 7.1 Lifting Handle/ Lifting Plate Bolt Stress, von Mises 7.2 Lifting Handle/ Lifting Plate Tapped Holes, Shear * SY=Static Yield, SU=Static Ultimate, SSY=Static+Seismic Yield, SSU=Static+Seismic Ultimate Safety Factor (Ult) Required Safety Factor* 1.60 30.0 18.7 1 SSY 5.71 20.8 3.6 3 SY 1.33 30.0 22.5 1 SSY 4.21 20.2 4.1 6 SY 4.21 43.3 10.3 8 SU 1.07 30.0 27.9 3 SY 5.71 20.8 3.6 3 SY 7.39 30.0 4.1 3 SY 4.50 17.3 3.8 3 SY
EDSN10-000004-AA Page 7 of 51 1) The mounting rails are connected to the TIM boat (the TIM boat is LLE equipment) using 14 10-32 stainless steel fasteners and helicoil inserts. The fasteners will be analyzed under both static and seismic loading conditions. The two horizontal and one vertical seismic forces will be assumed to occur simultaneously, acting through the center of gravity of the equipment, and will be combined to calculate seismic response values. Conservatively, only two of the fasteners will be used in the calculations. No information is known about the inserts in the TIM Boat, therefore the thread shear will be calculated based on a 10-32 thread directly into aluminum (building additional conservatism into the calculations). 2) The mounting rails are connected to the TIM mounting frame using 12 10-32 stainless steel fasteners and helicoil inserts. The fasteners will be analyzed under both static and seismic loading conditions. The two horizontal and one vertical seismic forces will be assumed to occur simultaneously, acting through the center of gravity of the equipment, and will be combined to calculate seismic response values. Conservatively, only two of the fasteners will be used in the calculations. 3) The EPPS assembly is mounted to the Support plate, which is connected to the TIM mounting frame, using six 10-32 fasteners. The fasteners are assembled through the TIM mounting plate and threaded into the TIM mounting frame. The two horizontal and one vertical seismic forces will be assumed to occur simultaneously, acting through the center of gravity of the equipment, and will be combined to calculate seismic response values. Conservatively, only two fasteners are used for tension calculations. 4) The EPPS is secured to the aluminum Support plate, using four 10-32 fasteners. The fasteners are assembled through the support plate, through the lead shield and threaded into the steel side plate. The two horizontal and one vertical seismic forces will be assumed to occur simultaneously, acting through the center of gravity of the equipment, and will be combined to calculate seismic response values. 5) The EPP Spectrometer assembly is lifted by a single hoist ring threaded into a 304SS lifting bracket. 6) The lifting bracket is mounted to the EPPS, using four 10-32 fasteners. The fasteners are assembled through lifting bracket, through the lead shield and threaded into the steel side plate. The two horizontal and one vertical seismic forces will be assumed to occur simultaneously, acting through the center of gravity of the equipment, and will be combined to calculate seismic response values. Conservatively, only two fasteners are used for tension calculations. 7) The EPP Spectrometer assembly is lifted by two people, using an aluminum handle. The handle is mounted to the stainless steel lifting bracket using two 3/8-16 fasteners.
EDSN10-000004-AA Page 8 of 51 The following table lists the torque value for each fastener: Table 3: Torque values for the EPPS. Item # Screw Size Minimum Length of Thread Engagement Female Threads Recommended Torque (in-lbf) 1 10-32 0.29 Al 6061-T6 w/ SS 13.5 Helicoil Inserts 2 10-32 0.29 Al 6061-T6 w/ SS 13.5 Helicoil Inserts 3 10-32 0.29 Al 6061-T6 13.5 4 10-32 0.29 A36 Steel 13.5 6 10-32 0.29 A36 Steel 13.5 7 3/8-16 0.625 304 SS 103.5 Section E - Testing Requirements No Testing Requirements. Section F Labeling Requirements The equipment needs to be labeled per the requirement in LLE Seismic Criteria NIF-0116027-AC, with the EDSN number EDSN10-000004. If labeling is not possible, the equipment must be bagged and tagged with the EDSN number EDSN10-000004. The equipment needs to be labeled per the requirement in LLE Seismic Criteria NIF-0116027-AC, For Use at LLE Only. If labeling is not possible, the equipment must be bagged and tagged with the message For Use at LLE Only. Section G Associated Procedures None Section H References 1. Engineering Design Safety Standards Manual, M-102, Lawrence Livermore National Laboratory, 2009. 2. Recommended Seismic Criteria for LLNL Equipment Located at LLE, NIF 0116027-AC, 12/18/2009
EDSN10-000004-AA Page 9 of 51 Appendix A Calculations
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EDSN10-000004-AA Page 33 of 51 Appendix B Counter Weight The EPPS Counter weight is shown in figure B-1. Fig. B-1. EPPS installed in TIM Boat, with Counter Weight.
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EDSN10-000004-AA Page 36 of 51 Appendix C EPPS Drawings
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