Alpha Magnetic Spectrometer Alpha Magnetic Spectrometer-02 ISS Digital Data Recording System (DDRS) ISS DDRS Project / ESCG Team

Alpha Magnetic Spectrometer Agenda Background Objectives Description Interface Diagram April 26, 2010 ESCG2

Alpha Magnetic Spectrometer April 26, 2010 ESCG3 BACKGROUND From: The Alpha Magnetic Spectrometer (AMS) flew for the first time on STS-91 and was powered up on Flight Day 1. Data originally planned to be sent to ground stations through Discovery's KU- band communications system was recorded onboard because of a problem with the KU-band system. Data that could not be recorded by ground stations was recorded onboard throughout the mission. Less than <5% of the AMS-1 data made it to the ground by S-Band. On the last STS mission, Shuttle Ku Band was out of commission.

Alpha Magnetic Spectrometer ESCG4 OBJECTIVES Nominally: Provide a recording of the science data as close to the source as possible. –Contingency: Provide a means for the ISS crew to observe operational data of AMS-02. –Contingency: Provide a means for the ISS crew to command the AMS-02 payload. ISS DDRS command path to AMS-02 is via High Rate Data Link. In the event ISS data systems or ground commanding are unavailable AMS-02 can be completely operated from this alternate interface. April 26, 2010

Alpha Magnetic Spectrometer ESCG5 ISS Digital Data Recording System description: –Based on a NASA provided T61p ISS laptop, dedicated for AMS use –Would provide primary on-board data recording (24/7) –Would provide play-back capability to downlink lost or corrupted data –Uses ISSLAN Joint Station Lan (JSL) connection –Crew hard-disk change-out minimized by over-writing data on the AMS disk once it is verified on the ground - only used to prolong H/D life. Ensures data integrality if the event of ISS data systems and/or payload outages. Allows for contingency crew monitor of payload status and contingency crew commanding of payload systems via “Fn” keystrokes, based upon procedures, flight notes or A-to-G voice-loop. AMS02 ISS DDRS is a CB / STS-134 crew request. AMS-02 ISS DDRS Description April 26, 2010

Alpha Magnetic Spectrometer AMS-02 ISS DDRS Interfaces ESCG6 April 26, 2010 AMS-02 ISS DDRS INTERFACES Part Names reflect OpNom AMS LAPTOP SEG Enhanced A31p 16V DC Power Cable SEG DC Power 28V DC Cable Assembly SEG J1 - 28VDC AMS USB Cable SEG Nominal configuration: AMS HRDL Cable SEG (Length: 8 ft) UIP AMS Hard Drive Adapter SEG VDC Power (P1) J7 - HRDL P7 P2P1 AMS Hard Drive SEG AMS USB Cable SEG P2P1 AMS Transmitter Adapter SEG TxUSB A31p 28V DC Power Supply SEG P2 P1 RJ45 - Network EXPRESS RACK 6 PS28 Junction Box SEG P1 P2 J2J1 P1 P2 P1 MDL 3 J2 – DATA (Network) MDL 3 USB P1 AMS Cable Kit SEG Alternate configurations; not part of AMS Cable Kit: AMS Short Extension Cable SEG (Length: 6 ft) AMS Long Extension Cable SEG (Length: 40 ft) AMS Receiver Adapter SEG RxUSB J4J4 Desk Top Plate Assembly SED Multi Use Bracket Assembly SEG Location Assumption: MDL 3, Locker 8, Drawer 2, Seat track RED = Assumptions or To Be Determined Blue = AMS-02 ISS DDRS Project deliverables J5J5 P2 PS28 Cable Assembly SEG VDC, 20 AMP Adaptor Cable Assy SEG P1 P2 PS28 Power Strip Assembly SEG AMS Network Jack Assembly SEG AMS Network Cable SEG (Length: 9 ft) Alternate length: 40 ft; SEG )

Alpha Magnetic Spectrometer BACKUP SLIDES ESCG7 April 26, 2010

Alpha Magnetic Spectrometer ESCG8 April 13, 2010 ISS DDRS Installation Concept

Alpha Magnetic Spectrometer ESCG9 April 13, 2010 ISS DDRS Installation Concept SEG ft SEG SEG SEG SEG SEG SEG SEG SEG ft SEG (2X) 3ft SEG / -302 SEG and SED

Alpha Magnetic Spectrometer Documentation Updates G5787B - T61p GCAR add new components: alternate HDDs, cables, adapters. –CRCP to provide checklist to T61 Interface JSC T61p PTRS – no changes JSC T61p IRD – no changes; Memo documenting how ISS DDRS HW meets Section 4. MATL USA_R1 - Materials Analysis – update to apply to new HDDs & Cables ESCG10 April 13, 2010

Alpha Magnetic Spectrometer AMS-02 ISS DDRS Requested Certification Hardware ESCG11 April 13, 2010 Certification Testing Class 1 COTSClass 3Provided By T61p Laptop 12ISS T61p 160 GB C: Hard Drive (Prime installed) 12ISS T61p Internal Battery (installed) 12ISS T61p Ultrabay Adapter Assy (installed) 12ISS T61p Firmware/BIOS 12ISS T61 Power Supply 12 T61p Ultrabay Adapter Assy 12ISS

Alpha Magnetic Spectrometer AMS-02 ISS DDRS GFE Provided Parts/Materials ESCG12 April 13, 2010 Certification Testing Part NumberQtyProvided By T61p Laptop SEG ISS T61p 160 GB C: Hard Drive (Prime installed) SEG ISS T61p Internal Battery (installed) SEG ISS T61p Ultrabay Adapter Assy (installed) SEG ISS T61p Firmware/BIOS SKG _C 1ISS T61p 160 GB D: Hard Drive (uninstalled data spare) SEG ISS T61p Ultrabay Adapter Assy SEG ISS PGSC DC PWR cable SEG ISS DC PWR SUPLY SEG ISS DC PWR SUPLY cable SEG ISS PS28 Power Strip Assembly SEG On-orbit PS-28 Junction Box SEG On-orbit PS28 Cable Assembly SEG On-orbit 28 VDC, 20 AMP Adaptor Cable Assy SEG On-orbit Desk Top Plate Assembly SED ISS Multi-Use Bracket Assembly SEG ISS

Alpha Magnetic Spectrometer Deliverables: Hard Drive Assumptions AMS Hard Drive (SEG ) (7 of -801; 3 of -802) –COTS; 500GB or more –Acceptable alternate to (160 GB) SEG –Conformal coating to protect exposed circuitry on AMS drives –Compatible with Windows XP, AMS software –Compatible with SKG Firmware/Bios Configuration –Certification by similarity: EMI; no vibe, no thermal –Ionizing Radiation testing – Engineering eval only (Preferred HD + 2 alternate HDs) –GCAR functional testing: with T61p at SCTF lab –TPS: Sharp edges, burrs, labeling, cleanliness –AMS data & S/W is stand-alone and not part of the HD cert effort ESCG13 April 13, 2010

Alpha Magnetic Spectrometer ESCG14 Certification Approach: Modify existing T61p laptop Government Certification Acceptance Request: –Existing T61p GCAR is Criticality (Crit) 1 –AMS-02 ISS DDRS added to T61p GCAR as Crit 3 H/W and Crit 3 function AMS-02 ISS DDRS delivered per AMS process: DD-250 and JR-1027 ADP Testing: –EMI testing: (ISS levels: emissions and susceptibility) USB Adapters HDD may be by similarity, memo –Ionizing radiation susceptibility – mission success - engineering eval testing only –Early engineering evaluation functional at SCTF SVF –Interface Verification KSC test-bed with AMS Payload Analysis –Materials analysis memo (flammability, out-gassing, toxicity) AMS-02 ISS DDRS - Certification April 13, 2010

Alpha Magnetic Spectrometer ESCG15 April 13, 2010 ST Fiber Connector USB Connector ISS DDRS Design Status usb/HRDL Adapters SEG / -302 Labels will differentiate Transmitter & Receiver Purpose: Converts HRDL fiber signal to USB (one each transmit and receive). Design: Aluminum extruded housing, conformal coated PCB. Materials: IVA compatibility assessment to be performed.

Alpha Magnetic Spectrometer ACRONYMS ESCG16 AcronymDescription/Meaning AMSAlpha Magnetic Spectrometer COTSCommercial Off-the-shelf DDRSDigital Data Recording System EMIElectro-magnetic Interference ESCGEngineering Science Contract Group ESDElectrostatic Discharge GFEGovernment furnished equipment HDDHard Disk Drive HRDLHigh Rate Data Link ISSInternational Space Station ISSLANISS Local Area Network MDLMid-deck Locker PWRPower PDAPre-Delivery Acceptance PIAPre-Installation Acceptance TIMTechnical Interchange Meeting UIPUtility Interface Panel USBUniversal Serial Bus April 13, 2010