lctpc/lpwp-6th phonemeeting

02/08/2006 Ron Settles MPI-Munich/DESY 6th WP phonemeeting 02 August 2006

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LCTPC/LPWP-6th phonemeeting

– Date 2 August 2006 – Time

• 7:00 west coast• 10:00 east coast• 16:00 central Europe • 23:00 Japan

– To join, Phone +494089981390 code 52872#


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Agenda for 6th WP phonemeeting

AGENDA -1.News

Formation of the LCTPC/LP CollaborationWWS-R&D-panel tracking review at

Beijing -2.WP meeting

LCTPC/LP goals (RS)LP status (whoever is ready)

-3.Future meetings -4.AOB


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AGENDA -1a.Formation of the LCTPC/LP collaboration

If your group has not yet sent us the name of your CB representative (Jan’s terminology), please do so a.s.a.p. I will circulate the list of names as soon as it is complete.

Here are the groups who have replied up to now: marked by


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LCTPC/LP Groups (09 August 06)

AmericasCarleton Montreal VictoriaCornellIndianaLBNLMIT

Purdue Yale

EuropeEuropeLAL OrsayLAL Orsay IPN OrsayIPN Orsay

SaclaySaclayAachenAachenBonnBonnDESYDESY

UHamburgUHamburgFreiburgFreiburgKarlsruheKarlsruhe

MPI-MunichMPI-MunichRostockRostockSiegenSiegenNIKHEFNIKHEF

UMM KrakowUMM KrakowBucharestBucharest

NovosibirskNovosibirskPNPI StPetersburgPNPI StPetersburg

LundLundCERNCERN

AsiaAsiaTsinghuaTsinghua

CDC:CDC:HiroshimaHiroshima

KEKKEKKinki UKinki USagaSaga

KogakuinKogakuinTokyo UA&TTokyo UA&T

U TokyoU TokyoU TsukubaU Tsukuba

Minadano SU-IITMinadano SU-IIT

…Other groups interested?


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AGENDA -1b.Tracking review at Beijing:

As announced at the VLSW06, the WWS-R&D Panel is starting regular reviews of the different R&D projects for the LC detector. Chris Damerell informed me they want to start with tracking (Si and TPC) at the Asian LC meeting in Beijing (February 2007). First ideas are to submit a report (presumably an update of the May2006-PRC report will be appropriate), give a presentation at an open session and have short overviews from each country (including finances/manpower) at a closed session.


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AGENDA -2a.Next iteration on the goals for LCTPC.

Takeshi asked to list an overview with both LP and SP R&D possibilities. Here is a preliminary version of the items shown at VLCW06 + feedback from Dan; first the general idea:

• 2007-08: SP (small prototype) tests, LP1 –> two endplates: Gem+pixel, Microm.+pixel• 2009-10: LP2 -> real LCTPC prototype endplate: Gem or Mm + carbon-fibre sandwich, gating grid, sector/panel shape, LCTPC electronics, gas, etc


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TPC R&D breakdown (prel.)• Gem, Micromegas, Pixel LP1@Desy• Large, small, odd-shaped panels LP1@Desy• Endplate alignment and stability LP1,LP2@Desy• Fieldcage LP1@Desy• Sandwich structure SP/LP2• Gating/max. space charge SP/LP2

ion feedback rate• Point/2-track resolution LP1,2@Desy• Momentum meas. in inhomog. B-field LP1,2@Desy• dE/dx measurement LP1,2@Desy• Gas studies SP• Pad shapes SimulationLP1,LP2• Jet environment SP@Cern/FermiLab • Beams

• 1-6 GeV/c electrons LP1@Desy• 1-20 GeV/c hadrons (+dE/dx) SP,LP2@Cern/FermiL • 100 GeV hadrons (+jets) SP,LP2@Cern/FermiL


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AGENDA -2b.Electronics ideas (Leif,Luciano)Reminder: for Eudet

1000 altro channels available ------------12/2007

From last meeting, drawing from Leif of connector:


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AGENDA -2c.Electronics ideas (Madhu)

From last meeting, Madhu proposes for the LCTPC

electronics:

-preamp 25ns Trise (10%-90%)-no shaper-integrator-25MHz 10to12-bit FADC

(2-track resolution can benefit from the somewhat faster Trise if the noise is still acceptable)

To the electronics experts: please comment!


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AGENDA -2d.Ideas for the endplate Reminder: most urgent point for LP is to

design layout of endplate and finalize ~12/2006

Nothing new this meeting.


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AGENDA

-3.Future meetings-At Vancouver, it was decided that a phonemeeting

every 2 weeks is the right frequency for now.After Vancouver there are (in addition to

phonemeetings):-Paris Endcap meeting organized by Paul/Akira (12-15

September 2006)-Eudet annual meeting MPI-Munich (18-20 October 2006)-European LC workshop Valencia (6-10 November 2006)-Asian LC workshop Beijing (February 2007)


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AGENDA -4.AOB


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Back up slides,

for reference

Back up slides,

for reference


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AGENDA -1a.Formation of the LCTPC/LP collaborationDean, Takeshi and RS have started working on this.

First ideas:

– 1)Three coordinators, one chosen by each region. These spokespersons (SP) would coordinate the work of the following two boards:

– 2)The collaboration board (CB), consisting of the principle investigator (the group leader or other chosen member) from each group. Each CB member would take care of the resources for its group (money and people).

– 3)The technical board (TB), consisting of the existing workpackage (WP) conveners. The TB will ensure the technical integrity of their WP and compatibility with other WPs while maintaining close contact with the rest of the collaboration.


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AGENDA -1b.Formation of the LCTPC/LP collaboration

The SP will ensure that the coordination between the CB and TB is efficient and the work is carried out in a timely fashion. We also discussed that the CB and TB may each appoint an a kind of executive committee to steer the work, since this is a job more efficiently done with a small number of people. Details on the exact structure and how the steering is to be done still have to be worked out (feedback is welcome), but first:

The interim-SP and the TB exist. A preliminary from of the CB is the groupleader’s mailing list which evolved during the last couple of years. For this organizational work, we need a more official list of names, which was the subject of our 12 July email. Somewhat more than half have replied, so we need to get the rest in order to proceed. As soon as the full CB is known, we can start exchanging ideas between the SP, CB and TB.


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Akira Sugiyama – GLD DOD


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RS study - LDC DOD - together with

Joel PouthasPhilippe Rosier

(IPN Orsay)


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Aleph Endplate


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Some features• Zigzag structure prevented loss of tracks > θ~22°• Sectors mounted from inside using a “handling tool” to minimize the dead space between sectors. This straight-forward operation which was performed at least 30 times during the lifetime of Aleph. • Alu sandwich structure stiff, lightweight to

- contain 7mb overpressure- provide forced-air thermal insulation between electronics and TPC volume

• Water cooling of 1kW electronics/side in addition- 22K channels per side

• Combination water/air cooling blocked all heat to TPC• Overall thickness ~ 25%Xo (average) w/o cables• Bending of endplate

- 20 micrometers due to 7mb overpressure- 5 micrometers due to wire tension


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R&D Planning• 1) Demonstration phase

– Continue work with small prototypes on mapping out parameter space, understanding resolution, etc, to prove feasibility of an MPGD TPC. For CMOS/Si-based ideas this will include a basic proof-of-principle.

• 2) Consolidation phase– Build and operate the LP, large prototype, (Ø ≥ 75cm, drift

≥ 100cm), with EUDET infrastructure as pedestal, to test manufacturing techniques for MPGD endplates, fieldcage and electronics. Design is starting---building and testing will take another ~ 3 years.

• 3) Design phase– After phase 2, the decision as to which endplate

technology to use for the LC TPC would be taken and final design started.

lctpc/lpwp-6th phonemeeting

Documents

wp phonemeeting agenda

desy fieldcage lp1

pixel lp1

phonemeeting date

stability lp1

desy dedx measurement

desy large

desy momentum