Maricopa Community Colleges  GTC281   19976-20025 
Official Course Description: MCCCD Approval: 12/10/02
GTC281 19976-20025 L+L 2 Credit(s) 3 Period(s)
High Vacuum Practices
Concepts, limitations, and basic relationships among components of the high vacuum system, and their related effects on the performance of the system. Production and maintenance of extremely low gas densities within an enclosed environment, instrumentation for measuring extremely low pressures, pumps, and associated sensitive equipment and techniques used for leak detection. Vacuum materials, hardware, and troubleshooting. Prerequisites: (GTC181 and GTC185) or (GTC181 and PHY111).
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MCCCD Official Course Competencies:
 
GTC281   19976-20025 High Vacuum Practices
1. Contrast flow and viscous flow in gases. (I)
2. Explain the operation of the major types of roughing pumps. (II)
3. Explain how high vacuum pumps are maintained. (III)
4. List the major components in each type of ultrahigh vacuum pumps. (IV)
5. Describe the pressure range over which each types of vacuum instrumentation operates. (V)
6. Explain common joining techniques. (VI)
7. Identify normal and abnormal operation of a vacuum system. (VII)
8. Identify common faults in vacuum system components. (VIII)
9. Identify and explain major components of two types of helium leak detectors. (IX)
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MCCCD Official Course Outline:
 
GTC281   19976-20025 High Vacuum Practices
    I. Vacuum Fundamentals
        A. Vacuum concepts
        B. Temperature
        C. Pressure
        D. Gas laws
        E. Gas flow
      II. Roughing Pump Operation and Maintenance
          A. Rotary piston mechanical pump
          B. Rotary vane mechanical pump
          C. Dry vacuum pump
          D. Sorption pump
          E. Venturi pump
          F. Blower/booster pump
        III. High Vacuum Pump Operations and Maintenance
            A. Oil diffusion pump
            B. Baffles and traps
            C. Turbomolecular pump
            D. Cryopump
          IV. Ultrahigh Vacuum Pump Operation and Maintenance
              A. Titanium sublimation pump
              B. Non-evaporable getter pump
              C. Ion pump
            V. Instrumentation
                A. Bourdon gauge
                B. Capacitance manometer
                C. Thermocouple gauge
                D. Pirani gauge
                E. Ionization gauge
                F. Cold Cathode gauge
                G. Calibration gauges
              VI. Materials and Hardware
                  A. Materials
                  B. Joining techniques
                  C. Components
                VII. High Vacuum Systems
                    A. Evaluating the system
                    B. Building and operation of the system
                    C. Characterizing the system
                  VIII. Troubleshooting
                      A. Categories of faults
                      B. Vacuum pumps
                      C. Vacuum systems
                    IX. Leak Detection
                        A. Sizing the leak
                        B. Leak detection equipment and methods
                        C. Calibrated leaks
                        D. Welding methods related to leaks
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