Alpha Magnetic Spectrometer 02 Phase III PSRP SRP

Alpha Magnetic Spectrometer – 02 Phase III PSRP / SRP Channelization Summary January 12, 2010 Timothy J. Urban / ESCG / Barrios Technology

AMS 02 Channelization Summary Outline Alpha Magnetic Spectrometer • AMS Heater Circuit Separation • AMS TRD Gas Control Separation • Cryo-Cooler Control Separation January 12, 2010 Tim Urban / ESCG 2

AMS 02 Channelization Summary Heater Circuits Alpha Magnetic Spectrometer • Typical heater circuitry does not route wires such that the controls (thermostats) are within wire bundles between thermostat and the heater. • As an example, wake radiator examples are provided on the following pages. January 12, 2010 Tim Urban / ESCG 3

AMS 02 Channelization Summary Wake Heater Circuits Alpha Magnetic Spectrometer January 12, 2010 Tim Urban / ESCG 4

AMS 02 Channelization Summary Wake Heater Circuits Alpha Magnetic Spectrometer January 12, 2010 Tim Urban / ESCG 5

AMS 02 Channelization Summary Wake Heater Circuits Alpha Magnetic Spectrometer January 12, 2010 Tim Urban / ESCG 6

AMS 02 Channelization Summary Wake Heater Circuit Separation Alpha Magnetic Spectrometer Thermostats Heaters January 12, 2010 Tim Urban / ESCG 7

AMS 02 Channelization Summary Wake Heater Circuit Separation Alpha Magnetic Spectrometer Heaters Thermostats January 12, 2010 Tim Urban / ESCG 8

AMS 02 Channelization Summary TRD Gas System Circuits Alpha Magnetic Spectrometer • TRD heater circuitry does not route wires such that the controls (thermostats) are within wire bundles between thermostat and the heater. • Additional controls (i. e. valve control lines) are physically bundled in separate cable harnesses. January 12, 2010 Tim Urban / ESCG 9

AMS 02 Electronics Summary TRD Gas System Alpha Magnetic Spectrometer TRD Gas 29 VDC Heater Circuit January 12, 2010 Tim Urban / ESCG 10

AMS 02 Electronics Summary TRD Gas System Alpha Magnetic Spectrometer TRD Gas 120 VDC Heater Circuit January 12, 2010 Tim Urban / ESCG 11

AMS 02 Electronics Summary TRD Gas – Circuit Separation Alpha Magnetic Spectrometer January 12, 2010 Tim Urban / ESCG 12

AMS 02 Electronics Summary TRD Gas – Circuit Separation Alpha Magnetic Spectrometer Heater Control Lines Valve Control Lines January 12, 2010 Tim Urban / ESCG 13

AMS 02 Channelization Summary CCEB System Circuits Alpha Magnetic Spectrometer CCEB utilizes independent means of controlling Cryocooler operation / maximum temperature: • J-Crate monitors GTSN temperature and removes PDS power (SSPC) to CCEB in over-temperature condition. • J-Crate monitors GTSN temperature and uses USCM control of CCEB to ramp-down Cryocooler power in over-temperature condition. • Internal and external Cryocooler sensors are monitored by independent sensors (in a physically separate cable harness – from above and eachother) and this data is used by separate subsystem in the CCEB to regulate power via PWM to Cryocooler January 12, 2010 Tim Urban / ESCG 14

AMS 02 Electronics Summary TRD Gas – Circuit Separation Alpha Magnetic Spectrometer External Temperature Sensor PWM CC Power Line GTSN Temperature Sensor January 12, 2010 Tim Urban / ESCG 15