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EBPMs

EBPMs. Alexander Kalinin Rob. Smith. Introduction. Issues Affecting Resolution:- Requirements EBPM Locations EBPM Head/Pickup Design Expected Detection Performance Detection/Data Acquisition EBPM Button Design. Diagnostic Devices Required. ?.

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EBPMs

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  1. EBPMs Alexander Kalinin Rob. Smith Design Review Workshop EMMA/CONFORM

  2. Introduction • Issues Affecting Resolution:- • Requirements • EBPM Locations • EBPM Head/Pickup Design • Expected Detection Performance • Detection/Data Acquisition • EBPM Button Design Design Review Workshop EMMA/CONFORM

  3. Diagnostic Devices Required ? Table Taken From BASROC/CONFORM Specification Document Design Review Workshop EMMA/CONFORM

  4. Injection/Extraction EBPMs Injection Extraction Design Review Workshop EMMA/CONFORM

  5. Ring EBPMs Proposed Design Review Workshop EMMA/CONFORM

  6. Ring EBPMs Option Design Review Workshop EMMA/CONFORM

  7. EBPM Button Pickup Block ‘ABCD’ ‘NSEW’ Design Review Workshop EMMA/CONFORM

  8. EBPM Button Pickup Block Type ‘A’ Type ‘B’ Design Review Workshop EMMA/CONFORM

  9. EBPM Block Simulation QuickfieldTM 2D Electrostatic Simulation Design Review Workshop EMMA/CONFORM

  10. EBPM Pickup Block Simulation TYPE B BPM Head Simulation with 12mm Button pickups Design Review Workshop EMMA/CONFORM

  11. EBPM Block Simulation Design Review Workshop EMMA/CONFORM Type ‘B’

  12. EBPM Block Simulation Design Review Workshop EMMA/CONFORM Type ‘B’

  13. Expected Performance • For our Type A BPM in 2D simulation, comparing the 12mm and 20mm diameter pickups vertically, the charge collected on each plate is in the ratio of ~1:1.7, and horizontally ~1:1.6 • Using 20mm diameter pickups, from experience with other systems, this equates to the possibility to resolve ~16pC of charge to the specification required vertically, and ~25pC of charge Horizontally. • Less charge can be resolved by data acquisition techniques. • Less charge means poorer resolution. Design Review Workshop EMMA/CONFORM

  14. EBPM Pickup Button Design Proposed Feed-throughs are bought in 50 Ohm items with pickup plates later attached and Welded into BPM block units. Must design/model feed-through to have low Capacitance (less than 1.5 pF). To achieve this, it may be simpler to buy in BPM buttons (e.g. KYOCERA, PMB Metaceram). Design Review Workshop EMMA/CONFORM

  15. EBPM Detector Electronics Based on ‘in-house’ synchronous detector with bought in ADC and fast data handling. This type of system will Require development. Mounted Locally To EBPM Pickup Design Review Workshop EMMA/CONFORM

  16. Summary • There are many issues and details still to resolve for the mechanical design and layout of the EBPMs. • Optimisation of electronic detector still to be performed. • We have confidence that the system should resolve approximately 70% less than the 80pC charge specified. • Is this adequate for what CONFORM is required to do? Design Review Workshop EMMA/CONFORM

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