DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 1

Does IPM System Matches MICE needs ?Does IPM System Matches MICE needs ?Personal Understanding and RemarksPersonal Understanding and Remarks

o General Considerations

o Front End Boards

o Timing Cards and Fan Out

o Buffer Cards

o Total cost summary

o Personal Conclusion

Jean-Sebastien Graulich, Geneva

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 2

General General ConsiderationsConsiderations

Disclaimer and Acknowledgment: Disclaimer and Acknowledgment:

This is only my personal understanding This is only my personal understanding of the presentations given by of the presentations given by Kwame and Rick. Please react if you Kwame and Rick. Please react if you see mistakes. see mistakes.

This is not a summary of the talks, just This is not a summary of the talks, just a list of things I think it’s important a list of things I think it’s important to keep in mindto keep in mind

Many thanks to Kwame and Rick for Many thanks to Kwame and Rick for their pedagogical effortstheir pedagogical efforts

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 3

General General ConsiderationsConsiderations

The system is designed for a PC based DAQThe system is designed for a PC based DAQ

The system is not yet fully commissioned The system is not yet fully commissioned

4 different cards are needed4 different cards are needed

Among them 2 are PCI cards for which there is no Linux Among them 2 are PCI cards for which there is no Linux driver availabledriver availableAn outdated driver exists for the Data Buffer cards

The Front End Board is the QIE Card. The Front End Board is the QIE Card. It integrates the charge received on the input over a given time (the sampling period) and transfer it to the Buffer Card in a free running continuous mode. No dead time.

Data in coincidence with the “Gate” signal is tagged (one bit in the header)

The Buffer Card is also doing Data SparcificationThe Buffer Card is also doing Data SparcificationIt is possible to store only the data which is tagged as being in coincidence with the “Gate”

It has a very large buffer memory (enough to store 400 ms of continuous sampling at 15 MHz)

The Timing Card is also doing the Control for the QIE The Timing Card is also doing the Control for the QIE CardsCards

It is doing the initialization of the QIE Card, under request from the PC

It provides the sampling clock (here 15 MHz, up to 35 MHz possible)

It has two external TTL (Lemo) inputs. The interpretation of the input signals is determined by firmware. They can be used as gate inputs.

Input Signal

Timing card(PCI)

Timingfanout

QIE cards(16x 8 ch)

Data Buffer(2*8 ch)

(PCI)

Host PC (LabView)

“Gate”

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 4

QIE Cards (FEB)QIE Cards (FEB)

It requires a custom backplane (call it It requires a custom backplane (call it crate) for power supply (6V and 9V). crate) for power supply (6V and 9V). Power consumption is substantial: 12 W / board (1 board is 8 ch)

2 crates are needed for EmCal (16 boards/crate, that is 128 ch/crate) -> ~ 200 W/crate

The input connector is very non-standardThe input connector is very non-standard

The Input signal is between 1 fC and 16 The Input signal is between 1 fC and 16 pC (14 bits)pC (14 bits)For EmCal we want flat cable connectors and signal attenuation. Ideally, we would implement there the transformers doing analog splitting with one output going to the QIE and one output coming out to the discriminators.

-> Some redesign has to be foreseen. Not trivial because the card is already crowded. We could go to 9U

Choosing less radiation resistant components could lead to some savings in Cost and Power consumption

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 5

Timing CardsTiming Cards

Could/Should be used as it is Could/Should be used as it is Including the LabView User Interface for the Control

Firmware has to be adapted to our Firmware has to be adapted to our trigger schemetrigger schemeOne input signal would be the normal gate. The firmware used for the calibration setup looks similar to what we’ll need.

The second input could be used for measuring the background induced by muon decay (random gate In Spill but out of Burst) without having to readout the tracker.

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 6

Timing Fan out CardTiming Fan out Card

Not a mere fan-outNot a mere fan-out Input an output connectors are not the

same (Cat5 input, Cat3/4 output

Could/Should be used as it is Could/Should be used as it is A simpler version can be done for a test if we need only one channel -> Simple connector adapter

Requires power supply tooRequires power supply too

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 7

Buffer CardsBuffer Cards

Could/Should be used as it is Could/Should be used as it is One part (Optical Interface) is not available on the market anymore -> Some simple redesign is needed

There is probably no need for new There is probably no need for new firmware firmware

Requires 64-bit 66MHz PCIRequires 64-bit 66MHz PCI That is a dedicated PC

Not compatible with the VME/PCI32 Interface CAEN V2718!

VME/PCI64 Interface exists. ~ same price but

it’s annoying to have different interfaces.

There is no driver for LinuxThere is no driver for Linux -> Large amount of work required to make it compatible with the DDAQ System.

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 8

Cost & Work Cost & Work EstimateEstimate

There is an oral agreement that Fermilab would endorse the Engineering There is an oral agreement that Fermilab would endorse the Engineering work involved work involved

I am not able to estimate that workload anyway

Enough QIE chips and GOL chips are available for free Enough QIE chips and GOL chips are available for free We would have to pay only for the parts and the board production

PartsParts Prod.Prod. Cost/cardCost/card Num.Num. TotalTotal Cost/chCost/ch

FEB 295 EUR295 EUR 80 EUR80 EUR 375 EUR375 EUR 3030 11.3 kEUR 11.3 kEUR 50 EUR50 EUR

BCBC 1700 EUR1700 EUR 670 EUR670 EUR 2370 EUR2370 EUR 55 11.9 kEUR11.9 kEUR 50 EUR50 EUR

TC 22 ??

TFOTFO 22 ??

Crate & PSCrate & PS 1000 EUR1000 EUR 22 2.0 kEUR2.0 kEUR 8 EUR8 EUR

LinksLinks 2100 EUR2100 EUR 2.1 kEUR2.1 kEUR 9 EUR9 EUR

TOTALTOTAL 117 EUR117 EUR

DAQ WS02 Feb 2006

Jean-Sébastien Graulich Slide 9

ConclusionConclusion

Main Advantages Main Advantages No dead time

Precise charge measurement

Main drawbacks Main drawbacks Not a plug-and-play system

Not compatible with the VME/PCI interface I have under my fingers

Not compatible with our specification of Linux PCs -> Large amount of software work required

CostCostWill probably end up around 200 EUR/ch (+ Discri + TDC)

-> No really significant cost saving compared to CAEN QDC proposal BUT

- Less uncertainty (better control of the development and production)

- Fully compliant with the 600 muons per spill (the QDC is NOT)

-> I think this should be tested in BTF -> I’ll try to set it up.

-> My preferred option remains the Flash ADC (if it works). *Offline* No surprise: The excess in workload is for me and I won’t pay the bill anyway …