Electron Positron Proton Spectrometer for use at Laboratory for Laser Energetics

Transcription

1 LLNL-TR Electron Positron Proton Spectrometer for use at Laboratory for Laser Energetics S. L. Ayers April 13, 2010

2 Disclaimer This document was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor Lawrence Livermore National Security, LLC, nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or Lawrence Livermore National Security, LLC. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or Lawrence Livermore National Security, LLC, and shall not be used for advertising or product endorsement purposes. This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

3 EDSN AA Page 1 of 51 Engineering Directorate Safety Note Electron Positron Proton Spectrometer for use at LLE EDSN 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 EDSN 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.

4 EDSN 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 Appendix C EPPS Drawings... 36

5 EDSN 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

6 EDSN 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.

7 EDSN AA Page 5 of 51 Table 1: Load path elements. 1 TIM Mounting Rail (Left mounting rail, TIM mounting) to TIM Boat Fourteen SS fasteners 2 TIM Mounting Rail to TIM Mounting Frame (Arm, Twelve SS TIM mounting) fasteners 3 TIM Mounting Frame (Arm, TIM mounting) to Support Six SS Plate (Support plate TIM mounting) fasteners 4 Support Plate (Support plate TIM mounting) to Side Four SS Plate fasteners 5 Hoist Ring to Lifting Bracket One ½ -13 fastener 6 Lifting Bracket to Side Plate Four 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* SY SY SSY SY SY SSY SY SY

8 EDSN 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* SSY SY SSY SY SU SY SY SY SY

9 EDSN AA Page 7 of 51 1) The mounting rails are connected to the TIM boat (the TIM boat is LLE equipment) using 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 thread directly into aluminum (building additional conservatism into the calculations). 2) The mounting rails are connected to the TIM mounting frame using 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 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 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 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.

10 EDSN 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) Al 6061-T6 w/ SS 13.5 Helicoil Inserts Al 6061-T6 w/ SS 13.5 Helicoil Inserts Al 6061-T A36 Steel A36 Steel / SS 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 AC, with the EDSN number EDSN If labeling is not possible, the equipment must be bagged and tagged with the EDSN number EDSN The equipment needs to be labeled per the requirement in LLE Seismic Criteria NIF 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, Recommended Seismic Criteria for LLNL Equipment Located at LLE, NIF AC, 12/18/2009

11 EDSN AA Page 9 of 51 Appendix A Calculations

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35 EDSN 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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38 EDSN AA Page 36 of 51 Appendix C EPPS Drawings

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