Fermi National Accelerator Laboratory FERMILAB CRYOGENIC STATUS Beams Division Cryogenics Barry Norris (overseer) Alex Martinez (helium cryo) Christine Darve (absorber/hydrogen details) Arkadiy Klebaner (cycle review) Particle Physics Division Del Allspach

Fermi National Accelerator Laboratory Work in Progress Layout and Design of Civil Construction – Cryo Hall and Experimenter Hall (Martinez and Norris) Design of Helium Cryogenic Facility (approx 500 watts at 4.5 K OR 14K) (Martinez and Norris with Klebaner oversight) Absorber Cryostat Design (Darve, et. Al. Controls and Instrumentation for Cryogenic Batch Process and Safety (Pei, Norris, and Allspach) Safety – Interfacing with Del Allspach

Fermi National Accelerator Laboratory Work NOT Charged To Us (or Not Being Worked On By Us) Not presently working on Japanese convective needs with regard to the Linac Cryo Facility Not working on any detail of MICE

Fermi National Accelerator Laboratory Today’s Talk Introduction to Work – Norris Outline of Present Helium/Hydrogen Facility – Martinez Details Regarding Hydrogen Absorber - Darve Introduction to Cryogenic Controls Needs - Norris

Fermi National Accelerator Laboratory Review of Quadlog Safety PLC Basics What is QUADLOG? It is the safety PLC design for potentially dangerous applications. Such as:  Emergency shutdown systems  Gas detection systems  Fire detection systems  Burner management systems  IMPT POINT: USED EXTENSIVELY AT CDF

Fermi National Accelerator Laboratory CRYOGENIC CONTROLS IDEA THERE WILL BE TWO (2) CONTROL PACKAGES USED IN THIS FACILITES FOR CRYOGENIC PURPOSES: 1) Standard Tevatron Process Control Package VME Based, POWER PC All helium I/O resides here, that is compressor and refrigerator systems Any non-critical Hydrogen affiliated I/O may potentially reside here 2) Specialized Safety PLC Used for Hydrogen I/O, FiRUS, ODH, flammable gas

Fermi National Accelerator Laboratory QUADLOG has built-in features provide maximum safety and reliability. QUADLOG exceeds the safety of triple modular redundant (TMR) system with greater system reliability and extensive diagnostics. QUADLOG also incorporates continuous PID control, analog I/O, open communications, and a variety of operator interface options not typically available from a PLC.

Fermi National Accelerator Laboratory QUADLOG SYSTEM FRONT OF MODULES

Fermi National Accelerator Laboratory QUADLOG Module

Fermi National Accelerator Laboratory The QUADLOG critical control system offers: Increased safety with proven fail-safe characteristics and protected outputs Higher system availability with the fault tolerance of quad redundancy, special self-testing software, and unique common cause defense mechanisms Improved reliability with greater strength against industrial stressors and isolation between I/O subsystems Decreased start-up time and minimized downtime with online diagnostics and detailed error reporting Easier integration with other control systems via open communications

Fermi National Accelerator Laboratory QUADLOG CRITICAL SPECS

Fermi National Accelerator Laboratory DCS of Hydrogen Experimental Hall and Manifold Room will be install in Helium Refrigeration Building. (Explosion proof for Class I, Division I, Group B) LOCATION

Fermi National Accelerator Laboratory QUADLOG Protected Outputs ensure no single component failure can prevent a mandatory trip. PROTECTED OUTPUT

Fermi National Accelerator Laboratory If On-line diagnostics detect a failure in one side of the system (including input, processor and output), the other side will maintains control automatically and system remains available Redundant control