# Presentation: 478213

## L0 Electronics Installation

**System Electronics Overview**
**Low Voltage**
**High Voltage**
**RTD-Carbon Fiber Temperature Monitoring**
**Readout**
**Prep Work Summary**
**Person-power, Schedule**

- 1

## System Electronics

**The L0 Upgrade electronics consist of 4 systems.**
**Isolated Low Voltage Power Supply**
**Wiener PS-****Filter****-Fuse Panel-PS Interlock-CAN bus interface**
**High Voltage Power Supply**
**HV crate-Fanout Chassis (2 units)**
**RTD Temperature Monitoring**
**RTD-Flex-(32AWG-****filter****-26AWG)-Controller**
**Readout**
**Junction Card-Twisted pair cable-Adapter Card**

- 2

## Isolated Low Voltage System

- 3

## Components installed

- 4

## LV Power Supply Filter Response

- 40V

-  pedestal
-  total noise 10
-  diff. noise 10

- without ferrite

- with ferrite

**channel**

**ADC counts**

**5 turns on ferrite core of power cable reduced noise to 3-3.5 cts.**
**Prototype filter design ready to test.**
**Preliminary 200 gauss magnetic field tests show minimal effect on filter action.**

- 5

## Filter location

**Install below fuse panel in cathedral area. **
**2 quadrants per card.**

- 6

## Prep work remaining 
Test filter at 100% test stand.
Enter operating parameters in EPICS database.
Test CAN bus interface via GUI in Control Room.
Work remaining in Collision Hall 
Install filter in cathedral.
Cable Plant:
12 twisted pair 10AWG cables
fuse panel filter 
filtergauge change panels on horseshoe 
12 twisted pair 22AWG cables
gauge change panels  Adapter Card

**Test filter at 100% test stand.**
**Enter operating parameters in EPICS database.**
**Test CAN bus interface via GUI in Control Room.**
**Work remaining in Collision Hall **
**Install filter in cathedral.**
**Cable Plant:**
**12 twisted pair 10AWG cables**
**fuse panel******** filter **
**filter********gauge change panels on horseshoe **
**12 twisted pair 22AWG cables**
**gauge change panels ******** Adapter Card**

**LV PS work remaining**

- 7

## High Voltage System

**1st crate (L0) with 48 pods and power supply tested and installed in the 100% test stand at SiDet.**
**Pods modified to accommodate lower current.**
**2****nd**** 48 pod crate (SMT expansion) load tested and ready for installation.**
**Prep work:**
**Order HV cables within next couple of weeks.**
**Work remaining in Movable Counting House.**
**Install 2 HV crates-1****st**** from SiDet, 2****nd**** in house.**
**Install 2 Fanout chassis for L0.**
**Install 96 SHV cables from HV pods to Fanout chassis.**
**Remapping of Inner H-disk channels.**
**Distribute additional 48 channels in Fanout chassis. **
**Work remaining in Collision Hall:**
**None**

- 8

## RTD system

**Monitors carbon fiber structure temperature.**
**Testing at SiDet has uncovered noise coupling into the readout from RTD flex circuits.**
**32 AWG cable shielding tied to isolated ground at AC removed noise.**

- 8

- 1

- 36 conductor

- Hirose

- 36 conductor

- x8

- 9

## RTD System

**Prep work**
**Test filter card-shielding scheme.**
**How much lead resistance can Controller tolerate?**
**Latest studies show the Controller can handle 3K Ohm per lead. Filter design for 60dB attenuation at 1kHz has 1.3K Ohm per lead.**
**Current design (RCRCR) has filter located on horseshoe. **
**Filter:Capacitors need a connection to detector ground in the vicinity of Adapter Card. 1 location per quadrant required. Location has been defined.**
**Shield:Requires a connection to LV isolated ground. By positioning filter card in close proximity to gauge change panel, connection is easy. Location has been defined.**

- 10

## DAQ Mapping

**Positions for the temperature monitoring gauge change panels, LV gauge change panels, and Adapter Cards were determined based on the existing DAQ cable map.**
**Every effort has been made to minimize the number of cable moves required to integrate L0 into the current system.**
**Since the Outer and Inner H-disk low mass cables are combined on one old AC, it is necessary to move half of the Inner H-disk low mass cables (48). The open channels will be used for L0.**

- 11

## SE_1 Mapping

**IB**

**Sequencer**

**VRB**

- 12

## SouthEast

_**SouthEast**_
**S1: 10,11**
**S2: 23,24**
**S6: 76,77**

**AC**

**LV AWG**** ******

**Sector 1 Low Mass Moves ****	****Open Positions for Sector 1**
**         ****10C2 to 02C1****	****             10, 11, 12, 18****	**
**         ****11C2 to 03C1**
**         ****12C2 to 04C1**
**         ****18C2 to 09C1**
**Sector 2 Low Mass Moves****	****Open Positions for Sector 2**
**          ****23C2 to 15C1                               23, 24, 25, 31**
**          ****24C2 to 16C1**
**          ****25C2 to 17C1**
**          ****31C2 to 22C1**
**Sector 6 Low Mass Moves****	****Open Positions for Sector 6**
**          ****76C2 to 05C1                                76, 77, 78, 79**
**          ****77C2 to 69C1**
**          ****78C2 to 70C1**
**          ****79C2 to 71C1**

**RTD**
**Filter**

- 13

## Readout-Adapter Card

**Readout-Adapter Card**

**Work in Collision Hall**
**Remove 24 old ACs and standoffs.**
**Install 12 new ACs and mounts – 3 per quadrant.**
**Route 48 twisted pair cables from Adapter Card mounting ring (horseshoe) to Junction Card ring.**
**Connect Isolated LV power supply cable.**

**Adapter Card Installed on Horseshoe**

- 14

- Digital jumper cableJunction CardTwisted PairAdapter Card

## Readout-Junction Card

**Junction Card and Twisted pair cable**
**6 per ring — 12 per end**

**Junction Card Mounting Ring**
**2 rings per end**

- 15

- Digital jumper cableJunction CardTwisted PairAdapter Card

## Readout-Junction Card

**Work in Collision Hall**
**Connect digital jumper cable from detector to Junction card.**
**Mount Junction card.**
**Test channel with laptop and calibration pulse.**
**Confirms HV and LV are correct, the hybrid can be downloaded, and a calibration pulse is read out through entire chain. **
**Complete first tier ring of 6 cards on each end.**
**Install 6 more cards on second tier mounting ring.**
**Test in same fashion.**

- 16

## Silicon Track Trigger

**Layer Zero utilizes VRB slots previously used by H-disks.**
**H-disks were not used in the STT trigger.**
**To integrate Layer Zero into the trigger, SEQ fibers need to be moved from the associated VRB crates to the splitters mounted on the wall in the 2****nd**** floor movable counting house (MCH2).**
**Work in MCH2**
**Reroute 2 fibers/VRB crate (24 total) to splitter.**
**Install 2 fibers/splitter (24 total) to VRB crates.**

- 17

## Prep Work Summary

**LV system**
**Filter designed. Ready for testing.**
**HV system**
**Install RunIIa SMT expansion crate.**
**Order SHV cables for L0 and expansion crate.**
**RTD system**
**Filter designed. Quotes requested.**
**Readout**
**SEQ-splitter fiber plant. **
**Fibers/splitters in house. Need labels.**
**	****	****	**

- 18

## Time and Personnel

- 19