Hall B Gas System Proposal Physics Detector Support Group

Detectors Requiring A Gas System Drift Chambers LTCC HTCC MicroMegas RICH 9/20/2018

Using Current Equipment Analog Out Analog In 647B OBSOLETE $31,416 Liability 1359C OBSOLETE Analog RS232 Ethernet Ethernet EPICS

Using New Equipment Analog Out Analog In GE50 Ethernet Switch Ethernet EPICS

Pro’s and Con’s of Using Existing Equipment Total initial system cost ~ $25,000 cheaper Increased downtime projected MKS 647B Mass Flow Programmer No longer supported by manufacturer cannot acquire spares Not Required with new flow controllers ($31,416) RS232 Serial communication MKS 1359C Mass Flow Control Valve Repair no longer supported by manufacturer Calibration ~ $7,000 for current supply

Pro’s and Con’s of Using New Equipment Total initial system cost ~ $25,000 more High reliability projected MKS 647B Mass Flow Programmer Not required 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

Gas System Controls Cost New Flow Controller Equipment without 647C Programmers Item Location Detector Description Part Number Qty Cost 1 Gas Shed ALL NI cRIO-9030 783450-01 $6,824.48 3 Drift Chambers Mass Flow Control Valve (MKS) GE50 7 $9,396.45 4 MicroMegas 5 $6,711.75 LTCC 2 $2,684.70   Gas Shed Subtotal $25,617.38 6 Hall B All 8 Drift Chamber Process Control Valve ? $500.00 9 10 $8,054.10 11 SVT $1,342.35 12 HTCC 13 14 RICH Hall B Subtotal $20,405.63 Total $46,023.01 Existing Flow Controller Equipment Mass Flow Control Valve (MKS) Calibration $4,200.00 $2,700.00 $20,548.96 Difference $25,474.05

Gas Shed Drift Chambers RS232 MKS 647C Mass Flow Display Analog MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C RS232 MKS 647C Mass Flow Display Analog MicroMegas NI cRio PAC MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C MKS 647B Mass Flow Display Analog RS232 LTCC MFC 1359C MFC 1359C Analog

Gas Shed Drift Chambers RS232 MKS 647C Mass Flow Display Analog MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C MFC 1359C RS232 MKS 647C Mass Flow Display Analog MicroMegas NI cRio PAC MFC GE50 MFC GE50 MFC GE50 MFC GE50 MFC GE50 Ethernet Switch Ethernet Ethernet LTCC MFC GE50 MFC GE50 Ethernet

Mixing new valves with old controllers =