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

2. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG2 AMS Heater Circuit Separation AMS TRD Gas Control Separation Cryo-Cooler Control Separation AMS02 Channelization Summary Outline

3. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG3 Typical heater circuitry does not route wires such that the controls (thermostats) are within wire bundles between the thermostat and the heater. As an example, wake radiator examples are provided on the following pages. AMS02 Channelization Summary Heater Circuits

4. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG4 AMS02 Channelization Summary Wake Heater Circuits

5. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG5 AMS02 Channelization Summary Wake Heater Circuits

6. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG6 AMS02 Channelization Summary Wake Heater Circuits

7. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG7 AMS02 Channelization Summary Wake Heater Circuit Separation Heaters Thermostats

8. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG8 AMS02 Channelization Summary Wake Heater Circuit Separation Heaters Thermostats

9. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG9 TRD heater circuitry does not route wires such that the controls (thermostats) are within wire bundles between the thermostat and the heater. Additional controls (i.e. valve control lines) are physically bundled in separate cable harnesses. AMS02 Channelization Summary TRD Gas System Circuits

10. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG10 AMS02 Electronics Summary TRD Gas System TRD Gas 29VDC Heater Circuit

11. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG11 AMS02 Electronics Summary TRD Gas System TRD Gas 120VDC Heater Circuit

12. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG12 AMS02 Electronics Summary TRD Gas – Circuit Separation

13. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG13 AMS02 Electronics Summary TRD Gas – Circuit Separation Valve Control Lines Heater Control Lines

14. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG14 AMS02 Channelization Summary CCEB System Circuits 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 CCEB utilizes independent means of controlling Cryocooler operation / maximum temperature:

15. Alpha Magnetic Spectrometer January 12, 2010Tim Urban / ESCG15 AMS02 Electronics Summary TRD Gas – Circuit Separation GTSN Temperature Sensor PWM CC Power Line External Temperature Sensor