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TOTEM Roman Pot Cards - status. RP Motherboard Mezzanines: - “VFAT Mezzanine” - “CC Mezzanine” LVDS Repeater Card (see Giovanni slides) Digital Opto -Hybrid Module – DOHM RP Motherboard “RP MBRD” - Tests. RP Motherboard – “RPMBRD” (1).

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Totem roman pot cards status

TOTEM Roman Pot Cards - status

RP Motherboard

Mezzanines:

- “VFAT Mezzanine”

- “CC Mezzanine”

LVDS Repeater Card (see Giovanni slides)

Digital Opto-Hybrid Module – DOHM

RP Motherboard “RP MBRD” - Tests


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RP Motherboard – “RPMBRD” (1)

Block Diagram Top Bottom

- 4 cards V2 have been produced – this week expecting delivery;

- Components are ready to be mounted on 1 pcs – start this week;

- Full test needed before mounting the other 3 cards;


Totem roman pot cards status

LVDS Trigger

GOH 4

LVDS

to

CMOS

LVDS with Repeaters

- 32 Outputs

Coincidence Chips:

- 10 x 16 Trigger Outputs

TR Data Out

TR VFAT

S (1,3,5,7,9)

CC ODD

REPEATERS

REPEATERS

S (2,4,6,8,10)

CC EVEN

TR Data Valid

LVDS

to

CMOS

GOH 5

Trigger VFAT:

- receive 32 Trigger Outputs from LVDS to CMOS converters;

- receive T1 from PLL25;

- send TR Data Out to the Data Stream (via GOH3);

- send TR Data Valid to GOH4 and GOH5;

Optical via - GOH4 and GOH5

- Data Valid from:

TR VFAT or CCU or TR VFAT S1 bit

RP Motherboard – “RPMBRD” (2)

Zoom on Trigger outputs


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VFAT and CC mezzanines

  • VFAT Mezzanine:

  • Also Trigger VFAT (for RP Motherboard);

  • One VFAT chip with 32 inputs;

  • Standard 50pins output connector

  • Several PCB produced, 1 mounted , to be tested

  • CC Mezzanine:

  • One Coincidence Chip (CC);

  • 80 LVDS inputs;

  • 16 LVDS outputs;

  • I2C control

  • 3 pcs produced at CERN

    • Tested I2C channel only on “RPMBRD” - V1


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LVDS Repeater Card

  • LVDS Repeater Chip:

  • Repeat 16 LVDS signal lines;

  • Chip in package: TQFP64pins;

  • LVDS Repeater Card:

  • D-SUB 37pins male/female connectors;

  • Placed inside plastic hood;

  • Schematic – done and soon the layout;


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LVDS Repeater Chip – Tests (1)

Differential

Probe

Power

supply

O

U

T

P

U

T

I

N

P

U

T

Oscilloscope

Signals

Generator

Differential

Signal

Single ended

CHIP

IDEAL SETUP

  • 2 differential probes

  • 2 chips on repeater cards and cable

Chip

+

card

Chip

+

card

Delay measurement


Totem roman pot cards status

LVDS Repeater Chip – Tests (2)

O

U

T

P

U

T

I

N

P

U

T

40MHz

2MHz


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TOTEM - Control System

General Blocks, Characteristics

  • I2C for DOH outside;

  • few channels on LEMO;

  • close to DOHM

  • Fault repair reconfiguration example

  • bypass CCUM-3

Secondary

DOHM

B1

B2

DOH 2

B

CCUM-4

CCUM-3

CCUM-N

CCUM-2

CCUM-1

B1

B2

B1

B2

CCU

FEC

X

I2C 1

A

DOH 1

I2C 2

Up to 16 I2C channels each

DOH controlI2C out

Primary

DOHM *

  • Two Digital Opto-Hybrids modules;

  • Communication and Control Unit (CCU), LVDS buffers

  • and multiplexer;

  • A and B channels:

    • optical from/to FEC;

    • electrical on the INPUT and OUTPUT connectors;

  • DOH I2C control from outside;

  • * Based on TOB DOHM from CMS


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DOHM - status

  • 25 PCB produced;

  • 2 mounted with DOH mezzanines - used at CERN;

  • - DOH mezzanines are with 2m fiber – need to be cut and spliced!

  • - Possible, tools exist, but it is extremely delicate procedure (expert technician CMS)

  • Components and cable to order for remaining


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CCUM Carrier

B2

B2

B1

B1

A

A

I2C 1

I2C 2

DOH controlI2C out

  • Two CCUM modules;

  • I2C channels for DOHM and on LEMO connectors;

  • Can be divided on 2 independent boards – losing half of the I2C channels and second I2C

  • channel from next CCUM;

  • Schematic, Layout, Components order - stillpending

  • “CCUM Carrier” – is needed due to the DOH redundancy requirements and also due to the

  • requested I2C channels for T2 !!!


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Control/Readout Crate

CAEN

TOTFED

FEC

TTCci

RP Motherboard - “RPMBRD” – tests (1)

  • System in 555 for testing RPMBRD:

  • - Hardware:

  • - PC (CAEN VME controller) + VME Crate;

  • - TTCci + FEC + DOHM + RPMB – for control part;

  • - RPMB + TOTFED + S-Link64 or VME or USB – for readout and trigger part

Control Fibers

Data Fibers

S-Link64

RPMBRD

10 RP Hybrids

PC

DOHM


Totem roman pot cards status

RP Motherboard - “RPMBRD” – tests (1)

- Software:

- Control:

- I2C access to all devices:

- 10 RP Hybrids (4 VFAT + DCU each);

- 2 CC mezzanines;

- 1 VFAT Trigger Mezzanine;

- 1 PLL25;

- 5 GOH modules;

- 1 CCUM module

- T1 commands to VFAT;

- TTCci + FEC sends command/clock to RPMB;

- Synch from TTCci;

- Run VFAT Hybrid tests

- Readout and optical Trigger (electrical Trigger after CC mezzanine);

- GOHs + TOTFED – via VME or USB;

- Synch from TTCci

- DCS information (Temperature, RADMON, Pressure sensors)


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Conclusions

RP Motherboard:

- V2 produced

- Final Tests - in progress;

- Final Production, Order of Components and Tests – pending;

Mezzanines:

- “VFAT Mezzanine” – prototype produced, to be tested;

- “CC Mezzanine” – prototype produced, to be fully tested;

LVDS Repeater – layout pending

DOHM – ready for production