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What do you need to know about the polarized target system?
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The polarized target system consists of 6 major subsystems:
- The cryogenic Evaporation Fridgeis designed to provide high cooling power (1 W) at 1 K.
- The Pump Stack is two 7000 m3/hour in parallel backed by a 7000 m3/hour backed by a 755 m3/hour rotary vane.
- The NMR (Nuclear Magnetic Resonance) system is needed to measure the polarizationof the sample.
- The CPI EIO (Extended Interaction Oscillator)is a microwave generator used in DNP.
- The Target Material is a frozen solid material with the necessary characteristics for nucleon polarization.
- The Oxford Superconducting Magnet is vertically pointing split pair magnet needed for DNP.
Ready to go
What is special about the Drell-Yan Target
This system has the longest (along the beam-line) target cell to date for an evaporation fridge, this requires a unique microwave distributing horn and three NMR coils per target cell to further reduce systematics in the polarization measurement. This system was configured with the intention of having the greatest instantaneous luminosity of any previous evaporation system by having a beam intensity of 3X1012 protons/sec for 5 seconds while using a large pump system 17,000 m3/hour (16,800 m3/hour at 60Hz). We are also running an experiment with both polarized protons and neutrons which share different sensitivity to the overall figure of merit of the Drell-Yan asymmetry.
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h2. Target |
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Details h4. [Introduction to the Drell-Yan PT] h4. [ |
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System Photos] h4. [ |
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Target Logbook] h2. Polarized Target Training [Polarized Target Summary] [Anneal Summary |
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[Target Operators]
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Target |
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Expert Duties] [Target Operator Duties] |
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h2. Target |
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Operation |
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Procedure [PDP Restart Procedure] |
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[Cryo Screen Restart Procedure] |
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[Target Movement Procedure] |
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[New Baseline Procedure |
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Thermal Equilibrium Measurement Procedure] |
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Prepare |
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Fridge for Polarization |
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Anneal Procedure] |
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Target Replacement Procedure] |
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Magnet Energization Procedure] |
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[NMR Setup Instructions] h2. Target Documentation [Target Device List| https://twist.phys.virginia.edu/work/list_update.pdf] [LabVIEW Virtual Instrument (VI) Manual | https://confluence.its.virginia.edu/display/SeaQuest/LabVIEW+Virtual+Instrument+%28VI%29+Manual] [Microwave Generator Manual] [Magnet Power Supply Operation] [Piping and Instrumentation Diagram] [Hardware Manuals| https://twist.phys.virginia.edu |
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/work/Drell-Yan/Manuals/] [Cernox Target |
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Insert |
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Sensors] |
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Target |
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Fermilab] |
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Target |
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At Fermilab]
[Target To Do List for Anchit]
[Target To Get List (still needed equipment)]
[Request Service from Fermilab]
[Full Equipment List to be sent Fermilab]
[Parts List By Subsystem]
[Target Mechanics]
[Simulations]
[Experiment Schedule]
[Penetration in Cave]
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