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************************************************************************
* *
* CALL for DETECTOR CONTRIBUTIONS to the OBERNAI WORKSHOP *
* *
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* *
* 2nd ECFA/DESY Study on Physics and Detector for the Linear Collider *
* (http://www.desy.de/conferences/ecfa-desy-lc98.html) *
* ------------------------------------------------------------------- *
* *
* Working Group *
* on *
* Detector Performance and R&D *
* and *
* Detector for the TDR *
* *
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* *
* ECFA/DESY Plenary at Obernai 16 - 19 October 1999 *
* http://ireswww.in2p3.fr/ires/ecfadesy/index.html *
* *
* SECOND CALL for DETECTOR CONTRIBUTIONS to the OBERNAI WORKSHOP *
* (Please read below, and to give a talk, *
* send a mail to [log in to unmask], *
* the wg convener, and [log in to unmask]) *
* *
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Dear Colleagues,
This is for the 2nd iteration on planning of subdetector w.g. talks
for the LC meeting at Obernai, with a list of contributions based on
feedback from our first mail.
The relevant detector sessions are:
Sunday 14.00-16.00 Machine-Detector Interface
Sunday 16.30-18.00 Plenary of Detector Concept
Sunday 18.00-19.00 Detector Working Groups.
Monday 16.00-19.00 Detector Working Groups.
Tuesday Update on Detector Concept (20')
We are trying to avoid going parallel for subdetector w.g. talks,
so the Sunday plenary session should be limited to a short overview on
the detector CONCEPT UP TO NOW which also serves as input to the physics
discussions. The plenary on detector concept will thus be kept to 90'
so that the detector w.g.'s can start.
Here is the list of talks for the detector w.g. sessions
up to now (persons and titles only approximate):
Ties Behnke..............Mask Instrumentation
Marcello Piccolo.........Work by U.Colo. (Uriel Nauenberg et al)
on forward Cerenkov for reducing gamma-gamma
background to Susy
Richard Hawkings.........b/c-tagging as fcn of beampipe radius
Marc Winter..............CMOS progress for Vdet
Marco Battaglia..........APS mechanical design
Massimo Caccia...........Meas. on sensor structure with interleaved pixels
Ron Settles..............Some TPC info from the Star TPC and Aleph shorts
Madhu Dixit..............Gem TPC R&D at Carleton
Marcos Dracos............Positive ions in TPC drift volume
Grahame Blair............Pattern recognition with backgrounds in the TPC
Christain Hader..........Pattern recognition/track-linking
Jean-Claude Brient.......SiW calo. performance
Henri Videau.............SiW calo. design
Martino Margoni..........Caleido prototype for shashlik calo.
Marko Spegel.............RPC with 50ps resol./layer and 99% eff. for mips
For info, a preliminary list of people talking in the PLENARY part on
detector CONCEPT is Damerell, Moenig, Settles, Behnke, Colas,
Bertolucci, Piccolo, Sinram/Kuehlmann, so if you don't see them above,
that's why.
So, for the detector w.g. sessions there are a total of 15 talks
in 4 hours which would correspond to 16' per talk which is unrealisitic
unless we go parallel a bit. You will certainly let us know if there are
mistakes above (which surely exist), and we are looking forward to your feedback.
After that we'll send around another update next week before the Obernai
meeting. Attached below is a list of detector-related contact people.
Last minute adjustment of the schedule will be made during the workshop,
as usual.
Please send your convener, Rolf ([log in to unmask]) and
me ([log in to unmask]) a mail if you would like to present something.
For info, Rolf's summary of the July detector meeting in CERN is
also repeated below.
Best regards,
Rolf and Ron
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SUMMARY OF THE JULY'99 MEETING AT CERN
As discussed in Oxford, one of our goals at the Obernai workshop will
be to (hopefully) finalise the detector CONCEPT for the TDR.
To prepare for the decision a detector meeting was held at CERN
at the beginning of July the minutes of which you can find on the
ECFA/DESY web pages.
The present thinking within the detector group can be summarised
as follows:
-- We aim at a magnetic field of at least 3T with a coil design
which should allow to reach a maximum of 4T.
-- The coil thickness will be between 1.5 and 1.73 lambda
-- The inner radius of the coil will be kept at the CDR value of
some 3m.
-- Electromagnetic and hadronic calorimeter will be inside the coil
(total of about 4.5-5 lambda).
-- The TPC outer radius will be left at its CDR value.
-- The TPC inner radius might be moved inwards by 5-7 cm.
-- A detector yielding a precise space point will be placed between
TPC and Ecal in the endcap region.
-- There will be at least one detector layer between TPC and Vertex
detector for track linking and momentum resolution,
an ITC as described in the CDR will most probably not be needed.
-- Four to five disks will be placed in the forward region (theta > 80mrad)
to achieve best possible angle and momentum resolution.
-- The vertex detector itself does not need additional forward
discs beyond those mentioned in the previous point, unless a physics
argument can demonstrate their usefulness.
An increased vertex detector acceptance in theta seems possible
by increasing the length of the first vertex layer from +-2.5 cm
to +-5 cm without running into background problems.
-- Instrumentation of the mask region looks feasible down to 20 mrad,
i.e. hermeticity down to 20 mrad.
Main open questions:
-Which is the desired magnetic field strength (3...4T)?
-Length of the coil?
-What granularity (transverse and longitudinal) do we need in the
calorimeter?=====Your input is needed here most importantly=====
-Which cos(theta) acceptance is needed for b/c tagging?
-Do we need a bunch tagging device? If yes, stand-alone subdetector
or part of Ecal/Hcal/Muon?
-Particle (i.e. hadron) identification was not discussed in depth up to now.
==Whoever feels that we need a special particle id detector in addition to
the dE/dx measurement in the TPC, should make the case NOW.==
-inner radius of the beampipe: 1.1cm vs 1.5cm
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ECFA/DESY Conveners and other Contact Persons
Subdetectors:
Vertexing: Chris Damerell ([log in to unmask])
Tracking: Ron Settles ([log in to unmask])
Calorimetry: Sergio Bertolucci ([log in to unmask])
Muon System + Forward Calorimetry: Marcello Piccolo ([log in to unmask])
Data Acquistion + Trigger: Patrick LeDu ([log in to unmask])
Particle ID and Specialized Detectors: Ties Behnke ([log in to unmask])
Machine-Detector Interface:
Martin Leenen ([log in to unmask])
Olivier Napoly ([log in to unmask])
Nick Walker ([log in to unmask])
Jon Butterworth ([log in to unmask])
TESLA Upgrade:
Reinhard Brinkmann ([log in to unmask])
Detector for TDR:
Rolf Heuer ([log in to unmask])
Other aspects of the TDR detector:
Inner Tracking: Klaus Moenig ([log in to unmask])
Calorimetery: Jean-Claude Brient ([log in to unmask])
Simulation: Grahame Blair ([log in to unmask])
DAQ: Guenter Eckerlin ([log in to unmask])
(Vertexing, Tracking, Calorimetry things are being looked at by
Chris Damerell, Ron Settles, Sergio Bertolucci and Marcello Piccolo,
whose emails are above.)
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