Overview of T1 detector

T1 i d b 2• T1 is composed by 2 arms• Each arm is composed by 5 planes• Each plane is composed by 6 CSC

trapezoidal chamberstrapezoidal chambers• Each chamber is composed by 1 anode

and 2 cathode planes• For mechanical reasons each arm isFor mechanical reasons, each arm is

divided into two halves : each halve is considered independent to the other also from electrical/logical point of view

• In total, each halve include 15 chambers

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T1 functional electronics system architecture

On Detectorregion

Local Detectorregion

Counting Roomregion

TOTFED

LVDSCMOS

LVDSCMOS

GOHs

GOHDDAVMUX

TDAVMUX

TOTFED

OPTORx

OPTORx

Trigger bits

Data bits

Trigger Info

ReadoutPath

etectors

AFECsS‐bitDataOutClk40F C d

CMOS

SPYMezz

VFATTrgMez

MUXVFAT

ROCTTCRxOPTORx

Data bits

Data to DAQ(S‐Link; VME; or USB)

CSC De

CFECsFastCmdI2C

PLL25QPLL

CLK40Tree

CCUM

VFATFEC

DOHs mFEC ControlPathT

ok

40÷100cm T1

TreeDCU

CMOSLVDS

DOHM

TTCRx

TTC

TOTEMSlow Control

enRingg

4 x 15 Det 4 x 15 AFEC + 4 x 39 CFEC 4 x 9 ROC 2T + 2D + 4mFEC = 4 x T1 ¼4 x 1 DOHM

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On and Local detector region electronic boards

DOHM‐CCUSLOW CONTROL RING

3 x CFEC = 2 x 192chs

AFEC 220chs

CSC Plane_n

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T1 electronic boards placement.

= CSCROCs 45

6th frame

= ROCROCs 23

ROCs 01 DOHMA

ROCs 01 = DOHM

= CFEC

A= AFEC

= IP5

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T1 H.V. architecture (1) DCSDCSSCADAOPCServer

R.M.= 52 pin 4 x A1550PHV modules p

Radiall Connector

¼ T1 ¼ T1

SHVR.M.

Distribution box on 6° frame

Distribution box on 6° frame

SHV

R.M.-

NearFar

Distribution box on 6° frame

Distribution box on 6° frame

R.M. SHV SHV R.M.

A1550P

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24 Chs 5 kV/1mA

+¼ T1 ¼ T1

T1 H.V. architecture (2)

• Located in Counting Room, each ¼ T1 has available one A1550P board with 24 HVcommon floating signal return channels.

L ll i th C ti R th Si l R t d th HV bl Shi ld• Locally in the Counting Room, the common Signal Return and the HV cable Shield canbe connected in different ways, together or to the SY1527 Mainframe ground (AGND).

• A 100m long multiwire HV cable, connect each A1550P module to the ¼ T1 platform,where a short 4.5m cable, branchs the HV sources to the 6th frame.where a short 4.5m cable, branchs the HV sources to the 6 frame.

• On the T1 6th frame a distribution box is located, here only 15 out of 24 HV chs areconnected to the chambers via SHV connectors.

• The shield of each SHV connector is connected to the external copper layers of thepp ychambers, that are isolated from the structure. The external layers of the chamberrepresent the Signal Return connection.

• The main HV cable has the shield connection available on two pins of the Radialll b d l d f h ll h ll hmultipin connector, but instead it is isolated from the connector metallic shell. This in

order to avoid unforeseen contacts between the shield and the metallic structure of theenvironment.

• The cable shield is available on a fast‐on connectorThe cable shield is available on a fast on connector .

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SY1527HV MainFrame A1550P Ground

T1 HV cards (#4)

Frame A1550P jumpers

1550P

1550P

1550P

HV cards

HV cards

C.R. Main

220Vac{AGND}

A A A

T2 H

RP H

Boardchassis ShG

SRC.R. Main power Gnd

{AGND}

+ 4 Common Ground Return

4 x HV shielded multiwire cable (100m)

No ShG

HV

SR

+

‐

24 HV sources2 Interlock wires2 Shield wires

3.6kV

No ShGon the shell

X

24 common groundfloating sources

ShG T1 HV system cabling,Control Room side.RC

Option

ShG = HV cable Shield.SR = HV Signal Return.

g5kV/1mA.

to the Cavern= AGND

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From C.R.

4 G d Rt

T1 Platform

No ShGon the shell

No ShGon the shell

4 Gnd Rtn24 HVs

2 Interlocks2 Shields

HV cable

mV cable, 4.5m

T1 6th frameInterlockS it h

HV

No ShGon the 

1

15

8

9 HV cable1 5

Switches

SHVs

6 π24

able

shell

2416

ShG1.5m

Chs16

avail

T1 HV system cabling,Cavern side

CSC#1

CSC#15= Reference Ground (RG)

HV Chs 1 π 15

Cavern side.#1 #15 Reference Ground (RG)

= Signal Return (SR)

5 July 2010 8Saverio MINUTOLI

T1 L.V. architecture (1)MARATON Primary Rectifier

‐N ‐F +N +F

MARATON Remote Controller

Control Room

N F +N +F‐n ‐f +n+f

¼ T1 ¼ T1

2 x 4 ; 36 wires shielded cables, to MARATON Power Box

MARATON Power Box

-Distribution Box 6° frame 

Distribution Box 6° frame

MARATON Power Box

NearFarOn platform On platform

Distribution MARATON MARATON Distribution

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+Distribution Box 6° frame

Power BoxMARATON Power Box

Distribution Box 6° frame

¼ T1 ¼ T1

L t d it l tf h ¼ T1 h il bl Wi MARATON 12 LV fl ti

T1 L.V. architecture (2)

• Located on its platform, each ¼ T1 has available a Wiener MARATON 12 LV floatingchannels system.

• Only 7 out of 12 chs are used and cabled with independent shielded cables (2 x 16mm2

each) up to the T1 6th frame. These 7 cables together with LV sensing, DCS, HV andeach) up to the T1 6 frame. These 7 cables together with LV sensing, DCS, HV andoptic fiber cables, are routed inside a cable tray groove made on the CMS endcap disk.

• The 7 LV chs are connected on the T1 6th frame as follow:

– three main branches with 2 voltages (2V5: analog and digital) each, devoted tog ( g g ) ,supply LV power to the three set of ROCs (top + middle + bottom {same plane}).

– One branch with 2V5 digital voltage, devoted to supply LV power to the slowcontrol ring Digital Optic Hybrid Module (DOHM).

• The LV distribution internally to the ¼ T1, is done with independent shielded cables (2 x1.5mm2). The cables powering the same set of ROCs (top + middle + bottom) have thesame length, while the LV sense wires are connected only on the ROC located in TOPposition of the setposition of the set.

• All the LV cables have the shield connected to a fast‐on connector .

• Each ROC supply LV power (2V5: analog and digital) to the AFEC and CFEC cards wherethe VFAT hybrids are hosted. Depending the dimensions of the chambers managed,y p g g ,each ROC supply LV power up to 2 AFECs and 4 π 6 CFECs. These connections areperformed with 50 wires flat cable. LVDS signals from the F.E. use the same cable.

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¼ T1 L.V. architecture (3), ROCs cabling.

From MARATON Power Box on the platform

L.V. Distribution box on ¼ T1 6th frame

7 x (2 x 16mm2) shielded cables

2V5D 2V5A 2V5D 2V5ACh-U9 Ch-U8 Ch-U1 Ch-U0

Sense

Sense2V5D 2V5A

Ch-U5 Ch-U4

Sense

2V5DCh-U6

Sense

Shi

Cab

Shi

Cab

Shi

Cab

TOP MIDDLE BOTTOM TOP MIDDLE BOTTOMTOP MIDDLE BOTTOM

elde

les

elde

les

elde

les

ROCs 01 ROCs 45ROCs 23DOHM

d d dTo AFEC-CFEC To AFEC-CFEC To AFEC-CFEC

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I tot:U9  7A@2V5DU8  2A@2V5A

I tot:U1  10A@2V5DU0  5A@2V5A

I tot:U5  10A@2V5DU4  5A@2V5A

I tot:U6  0.5A@2V5D

¼ T1 L.V. architecture (3), ROC positions.

CSC

ROCs 456th frame

= CSC

= ROC

ROCs 23

ROCs 01

= DOHM

= IP5= IP5

5 July 2010 Saverio MINUTOLI 12

Slow Control Ring (SCR) cabling

CSC

ROCs 456th frame

= CSC

= ROC

ROCs 23

ROCs 01

= DOHM

= IP5

= SCR cable

= IP5

T1 SCR is based on CMS CCU25 custom device.Each ¼ T1 consists of nine nodes, each node has a CCUMezzanine locally powered by the ROC where it is hosted The DOHM (optic to electric interface board) is powered using a dedicated LV channel

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is hosted. The DOHM (optic to electric interface board) is powered using a dedicated LV channel.Each node has its unique address, the LVDS data transmission along the loop is made adopting twisted pairs shielded cable.