# Presentation: 596939

## MuTr Shielding & Grounding

- Preliminary 10/6/99 (G. Hart)
- Additions 1/4/01 (REM)

## Table of Contents

- 3. Table of Contents (cont)		4. System Diagram
- 5. Chassis				6. Digital section
- 7. Calibration				8. Glink/Clink
- 9. Definitions
- 10. Signal Paths			11. LeCroy HV ground
- 12. HV Dist. Card Schematic		13. HV Dist. Card Assembly
- 14. HV Dist. Box Assy		15. HV Cable plug assy
- 16. HV Cable assy			17. LVHP Schematic
- 18. LV Dist. Schematic		19. FEE Power Schematic
- 20. Cable, LVHP - LVD		21. Cable, LVD - FEE
- 22. Cable, FEE Pigtail			23. FEE Card Layers
- 24. Cable, FEE Signals		25. Belden 12 AWG Cable
- 26. Cathode PCB Schematic		27. Anode PCB Schematic
- 28. Cathode PCB Comp Side		29. Cathode PCB Pad side

## Table of Contents (cont)

- 32. St. 2 Cathode End View		33. FG Jumper assy
- 34. St. 2 Cathode Side View		35. St. 2 Anode Side View
- 36. Cathode Card Side View		37. ARCnet receiver
- 38. MAX1480				39.

## System Diagram

## Ming’s version of the world

## Calibration overview

## Calibration detail

## Chassis

## Digital section

- LV +

- LV -

- AMUADC
- FPGA

- ARCnet

- +5 V
- 0 V

- from preamp

- DCM     GTM

## Glink/CLink

## Distributed grounds for octant (Stn 2)

- ARCnet

- HV

- calib

- G/C

- chassis

- chassis

- chassis

- chassis

- 15

- 15

- 15

- 15

- 12

- 12

- 8

- 5

- LV

## Distributed grounds for Station 2

- chamber/CRA

- G/C

- calib

- ARCnet

- HV

- ... 8 times

- LV

## definitions

_*Frame Ground*_ - refers to the chamber metal frames, cable shields, external ground planes of printed wiring boards (PCBs), crates and racks.
- Possible points (to be investigated) where this may be connected to BNL earth ground are the magnet frame, the Low Voltage High Power (LVHP) crate, and the racks containing the LV & HV power supplies, and the LeCroy high voltage power supply.
_*SIGR-HV*_ - derived from the chamber card “SIGnal Return - High Voltage”, this is the ground side of the chamber signals, and low and high voltage power.

## Block diagram / Schematic of signal paths

## LeCroy HVPS  Ground Schematic

## High Voltage Distribution Box Schematic

- (This is an insulated box located on the chamber support structure)

## HV Distribution Card

## HV Distribution Box

## HV Plug box

## HV Coax Assy

## LV High Power VME Supply (BNL-Steve Boose)

## Low Voltage Distribution System Schematic

## FEE Power Schematic

## Cable; LVHP Supply to LV Distribution Box

## Cable; LV Distribution Card to FEE Crate Pigtail

## Cable, Pigtail from FEE Crate backplane

## FEE Printed Wiring Cards layer structure

- Backplane Layers

- Control Card
- Layers

- Cathode Readout
- Card (CROC)
- Layers

## Signal Cable: Chamber PCB to FEE Backplane

- Signal Cable: Chamber PCB to FEE Backplane

- Schematic & Assy Drawing
- of Signal Cable

- Signal Cable: Chamber PCB to FEE Backplane

## Power Cable, Shielded 12 AWG Pair

## Cathode Chamber Card, Schematic

## Anode Chamber Card, Schematic

## Cathode Chamber Card (Typical), component side

## Cathode Chamber Card (Typical), cathode pad side

- Note square pads to lower left
-  of connectors, these are for the
-  connections to the frame.

## Anode Chamber Card (Typical), component side

- these are for the connections to the frame.

## Anode Chamber Card (Typical), anode pad side

- these are for the connections to the frame.

## Station 2 Cathode planes, end view

## Jumper, Frame to chamber cards

## Side view of Chamber, Anode cards

## Side view of Chamber, Cathode cards

## ARCnet receiver

## max1480