1. Hall B Drift Chamber Gas System Proposal

2. Using New Equipment Ethernet EPICS Analog In Analog Out MKS GE50 Ethernet Switch Ethernet cRIO

3. Pro’s and Con’s of Using New Equipment Total initial system cost ~ $12,500 more High reliability projected MKS 647B/C Mass Flow Control Box –Not required, eliminating the undesirable use of RS232 communication MKS GE50 Mass Flow Control Valve –Controlled with LabVIEW directly –Each controller has it own web server and individual IP address for configuration –Communicates via Ethernet cRIO –Easy expansion (8 Slot Chassis)

4. Gas System Controls Cost Hall B Drift Chamber Gas Controls ItemLocationDescriptionNotesPart NumberQtyInd. CostTotal Cost 1 Gas Shed NI cRIO-9030 783450-011$8,200.00 2Mass Flow Control Valve (MKS)Includes 2 sparesGE509$1,400.00$12,600.00 3Easidew Online HygrometerIncludes 1 spareEA2+OL+HYG+100+HD+AC+SC03FT+NB4$2,035.00$8,140.00 4Absolute Pressureincludes 1 spareResearching3$3,000.00$9,000.00 5Oxygen SensorIncludes 1 spareoxy.IQ6$2,200.00$13,200.00 Gas Shed Subtotal$51,140.00 6 Hall B NI cRIO-9030 783450-011$8,200.00 7Easidew Online Hygrometer EA2+OL+HYG+100+HD+AC+SC03FT+NB2$2,035.00$4,070.00 Hall B Subtotal$12,270.00 8Gas Shed / Hall BMisc Equipment (Cables, Panels, Etc) VariousN/A$11,590.00 Misc Subtotal$11,590.00 Total$75,000.00

5. Hall B Gas Shed Ethernet NI cRio Ethernet Switch MFC GE50 MFC GE50 MFC GE50 MFC GE50 MFC GE50 MFC GE50 MFC GE50 Gas Mixing and Distribution Ethernet Oxygen Sensor Hygrometer Analog Input Hygrometer Flow Meter Gas Monitoring

6. Hall B End Station NI cRio Ethernet Switch Pressure Ethernet Analog Output Hygrometer Pressure R3 DC Pressure Control Valve R1-R2 DC Pressure Control Valve Pressure PID Loop Gas Monitoring