TTC UPGRADE FOLLOW-UP Sophie Baron , Angel Monera Martinez LECC 2006

Sophie BARON, PH-ESS LECC 2006, VALENCIA 1

TTC UPGRADEFOLLOW-UP

Sophie Baron, Angel Monera Martinez LECC 2006


TTC upgrade principle Transmitter Crate Receiver Crate Analogue versus Digital First results Status Conclusion


TTC UPGRADE [principle]

SR4

CCR

Experiments

RD12 system for TTC backbone obsolete

Few spares Design not documented No 24/24 support

Upgrade necessary Using up-to-date components Find a solution for 24/24

support (-> AB/RF piquet)condition: use the same Tx and Rx

modules as the AB/RF group

Tx Crate with AB/RF standard

Tx modules

Opticalsplitter

Rx Crate with AB/RF standard

Rx modules & a TTC specific adjustment module




TRANSMITTER CRATE [Overview] VME 6U RF-compliant crate (J2 not standard VME) Provided by AB/RF Installed in the SR4 (where the RF is generated) Controlled, supported and maintained by AB/RF Filled with transmitter VME modules used by the AB/RF group to transmit their own

signalso Optical components were already identified, buto It turned out that the VME modules were not designed yeto Design made by PH/ESS for the AB/RF groupo PH/ESS proposed to AB/RF a second version of these modules with cheaper

components (which could fulfill the requirements of 70% of their equipment) One laser chip per signal to be transmitted

o 3 Bunch Clocks (ring1, ring2, reference)o 2 Orbit signals (ring1, ring2)

Crate Controller

•Optical Transmitter boards for BC and Orbit transmission to experiments•2 versions being currently studied

Optical Transmitter

boards for RF internal use


TTC upgrade principle Transmitter Crate Receiver Crate Analog versus Digital First results Status Conclusion


RECEIVER CRATE [Overview] 6U VME 64x crate Installed in each experiment (instead of the TTCmi) One receiver per signal to be transmitted

o 3 Bunch Clocks (ring1, ring2, reference)o 2 Orbit signals (ring1, ring2)

Receiver boards supported and maintained by AB/RFo 2 different versions being studied now (one ‘Analog’ and one ‘Digital’)

Other modules & equipment supported by the experiments, maintained by PH/ESS

AB/RF receiver modules•Designed by PH/ESS•Supported & maintained by AB/RF•2/3 Rx per VME module (depending on the versions)

RF2TTC module•Designed by PH/ESS•Supported by the experiments•Maintained by PH/ESS-TTC team•Multiplexing and adjustment of the BC and Orbit signals

Optional Fanout Module•Designed by PH/MIC•Supported by the experiments•Maintained by PH/ESS-TTC team


RECEIVER CRATE [Crate Controller]

Crate Controllero ALICE:

• Standard VP315/317 from CCT

o ATLAS:• Standard VP110 from CCT

o CMS:• CAEN PCI-controller card A2818 + V2718 VME-

PCI optical bridge

o LHCb:• CAEN V1718 VME-USB bridge

OR

OR


RECEIVER CRATE [RF_Rx – ‘Analogue’ version]

Design done by PH/ESS (A. Monera) The corresponding Transmitter module has

been designed by PH/ESS as well Specifications written by the AB/RF group Tx and Rx components selected by the AB/RF

groupo Initially to transmit the LHC RF (400MHz continuous

sinewave)

6U VME modules (VME 64x and VME 64 compatible)o 2 receivers per moduleo Internal registers monitoring the optical power levelso Heat sink required (..) to keep the Miteq Rx and Tx at

about 35 C Deg.EDA-1332

A. Monera Martinez See details in following section


RECEIVER CRATE [RF_Rx – ‘Digital’ version]

EDA-1382A. Monera Martinez

Proposed by PH/ESS to AB/RF to replace the Analogue version where a cheaper laser could do the job.o Typically 400MHz or 40MHz clocks, Orbits, etc…

If accepted by AB/RF, would be supported and maintained by them as well.

Design done by PH/ESS (A. Monera) The corresponding Transmitter module has been designed

by PH/ESS as well 6U VME (VME 64x and VME 64 compatible)

o 3 types of optical receivers according to various requirements• Various types of receivers can be plugged with minor hardware

adjustments• Allows us to compare their performances in real conditions

o Internal registers• Signal detect (R)• Frequency detect for each channel (Read Only)• Threshold level adjustment (R/W)

o Firmware very close to the Analogue version

See details in following section


RECEIVER CRATE [RF2TTC]

EDA-1357S. Baron

RF2TTCo Inputs

• 3 BC inputs (SMA or Lemo00) (RF signals, BC1, BC2, BCref)• 2 Orbit inputs (RF signals, Orb1, Orb2)• 1 BST input (optical)

o Outputs• 4 ECL BC outputs (BC1, BC2, BCref, MainBC)

– AC coupled• 4 NIM copies• 3 ECL Orbit outputs (Orb1, Orb2, MainOrb)

– DC/AC coupled– Synchronised respectively to BC1, BC2, MainBC

• 3 NIM copieso Adjustments & Features

• Each BC input has:– Threshold adjustment– Multiplexing with internal source– Fine delay– QPLL

• Each Orbit input has:– Threshold adjustment– Fine delay for the synchronisation– Multiplexing with internally generated orbit (adjustable period)– Adjustable length and polarity– Coarse delay adjustment (in 25ns steps)– Fine delay of the output


RECEIVER CRATE [BC & Orbit fanout]

BC & Orbit Fanouto Dual 1:18 ECL fanouto 4 NIM outputs per input (ALICE requirement)o 1 status led per input (presence of clock / orbit). o Maximum densityo The 2 halves can be daisy chained.

EDA-1240C. Sigaud




ANALOGUE VERSUS DIGITAL [Modules]

ANALOGUE SETo Designed for RF transmission

(sinewave)o Phase noise <5ps (pk-pk!). (more info)o 2 Optical links per moduleo Optical power budget 10-15dB

DIGITAL SETo 40MHz & 5ns pulses transmissiono Jitter <30ps rmso 3 Optical links per moduleo Optical power Budget 25dBo Various Tx and Rx can be installed

5kCHF

4kCHF

RF_Rx_AEDMS Ref: EDA-01332

RF_Tx_AEDMS Ref: EDA-01331

1kCHF

.8kCHF

RF_Tx_DEDMS Ref: EDA-01380

RF_Tx_DEDMS Ref: EDA-01382

or

or

Photon PT5343-300MHz250 $ - Obsolete

OCP STX03-300MHz350 $

OCP STX24-1.5GHz600 $

Truelight TRR-1B43-00-150MHz8$

OCP SRX03-300MHz200 $

OCP SRX24-1.5GHz300 $


ANALOG VERSUS DIGITAL [Systems]

Tx

Rx

Tx

Rx RxRxRxRx

X6 = 204k

5kCHF

4kCHF

7 kCHFper link

SR4

Rx

Tx

RxRx RxRxRx

X6 = 34k

1kCHF

.8kCHF

1.2 kCHFper link

SR4

EXP

CCRCCR

EXP


ANALOGUE VERSUS DIGITAL [Production]

ANALOGUE SET

o Users: • AB/RF for continuous sinewave

transmission

Quantities: about 15 links

DIGITAL SET

o Users:• TTC (BC & Orbit) & AB/RF &

AB/BT with:– OCP STX03

– TRR-1B43

• AB/RF for 400MHz with:– OCP STX24

– OCP SRX24

Quantities: about 80 links

Awaiting for AB/RF final agreement




FIRST RESULTS [From CCR to Build.4 in Meyrin]RD12 TX

TX CRATE

TTCmi

RX CRATE(Analog and Digital modules)CCR MEYRIN

TTC RD12 (LHCrx)40.078MHz

Cy2cy jitter=29ps rms

Digital module (TRR receiver)40.078MHz

Cy2cy jitter=27ps rmsSkew jitter / Rd12 = 36 ps rms

Analog module*40.078MHz

Cy2cy jitter=18ps rmsSkew jitter / Rd12 = 35 ps rms

*: for the analog module, the setup is:Tx -> Rx -> Tx -> RxTo match the real conditions, where a transceiver at the CCR will be required


FIRST RESULTS [From CCR to North Area - setup]

PhotoMultipliers

& coincidence

scintillators

LECROY SDA6000 XXL

RD12 TX

TX CRATE

TTCmi

RX CRATE

CCRNORTH AREACMS facility

Recovered Clock & Orbit

Analog Rx Clock

Trigger

25ns structured test beam

Digital Rx Clock

•Scope triggered about 90 times per spill•Delays measured between the trigger falling edge and the closest rising edge of the 3 different clocks•Thanks to Jan Troska for having made this setup available

25ns test beam


FIRST RESULTS [From CCR to North Area - results]

Analog Clock

TTCrd12 Clock

Digital Clock

=> Histogram shape given by the high beam jitter vs the clock




STATUS

HARDWARE

INFRASTRUCTURE

SOFTWARE

EQUIPMENT STATUS

Crates AVAILABLE

Controllers AVAILABLE

RF2TTC 1 Proto just arrived at CERN

RF_Tx_A and RF_Rx_A 5 Protos of each being now evaluated by PH/ESS, AB/RF, AB/BT

RF_Tx_D and RF_Rx_D 5 Protos of each being now evaluated by PH/ESS, AB/RF, AB/BT

Fanout Protos-V1 tested, Proto-V2 at CERN in the following weeks

EQUIPMENT STATUS

Fibers RESERVED and installed. The patching campaign will begin in November

Splitters AVAILABLE for the Analogue version. To be ordered for the digital one.

STATUS

Test functions WRITTEN (M. JOOS)

API UNDER SPECIFICATION (M. JOOS in collaboration with the experiments)


TTC upgrade principle Transmitter Crate Receiver Crate Analog versus Digital First results Status Conclusion


CONCLUSION

Transmission Schemeso Analogue version validated (at, say, 90%)

• 5 prototype boards available (= 10 links)o Digital version in course of validation

• 5 prototype boards available (= up to 30 links)• Extended tests to be done in the TTC lab• Being tested by all the AB potential users right now• The AB/RF group needs to give its agreement to have these modules as standard

modules– Mandatory, as they will do the on-call support

RF2TTC prototype just arrived at CERN• System test to begin next week, with the following criteria

– Jitter test– System stability and reliability – Characterization (temperature, optical power range,..)

Production Readiness Review to be done in November o Can be preceded by tests done by experiments if they request it

Production to begin only after a green light from AB/RF group and experimentso 3 RF2TTC modules per experiment + 3 at the TTC lab + PCB and components

for 10 more spareso 3 RF_Rx (in the digital case) per experiment + 3 in the TTC lab, spares (pool of

spares maintained by the AB/RF, + extra batch of critical components)

Date post:	23-Jan-2016
Category:	Documents
Upload:	ilori
View:	36 times
Download:	0 times

TTC UPGRADE FOLLOW-UP Sophie Baron , Angel Monera Martinez LECC 2006

Documents