SCT review
Provisional Agenda of SCT Technical Reviews
___________________________________________
Please find below the provisional agendas for the SCT reviews to be held
at CERN 2/12/95-6/12/95 ie immediately after the ATLAS week.
The purpose of the reviews will be to monitor the progress made on the project
and to aid in the decision making required to come to a baseline. In general
topics will be covered by reviewers. Names will be circulated in the next
2 weeks.
Feedback on the agendas should be sent to me and/or the session convenors
Mike Tyndel
email M.Tyndel@rl.ac.uk
phone +44-1235 445246
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Schedule
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Session Convenor Room
Sat 2nd AM : Silicon Detectors P Allport ECP 13-2-005
PM : continued
Sun 3rd AM :Electronics A Grillo Salle du Conseil
PM : continued
Mon 4th AM : held in reserve Salle du Conseil
PM : Modules N Unno, A Carter
Tue 5th AM :: Engineering G Tappern, E Perrin Salle du Conseil
starting 15h30 : continued TH Audit. 4-3-006
Wed 6th AM :: Insitute Meeting M Tyndel Salle du Conseil
PM : held in reserve LEP Audit.
_____________________________________________________________________________
Agenda - Silicon Detector Session
_________________________________
Convenor : Phil Allport (allport@hep.ph.liv.ac.uk)
_________
Overall Aim :
____________
Review the measurements made on ATLAS prototype detectors, covering the
specific points outlined below. Define the measurements still required and the
timescale for doing them. Review the specifications for the ATLAS detectors
and modify them on the basis of what has been learned. Decide on the
detector types and quantities required for 1996. Define the remaining
RD and plans for radiation testing.
Agenda :
_______
1) Outline of aims and objectives (20 mins)
2) Brief presentations on existing prototypes corresponding to ATLAS
specifications concentrating on whether or not these devices meet
the agreed specifications and/or the further specifications with
LHC speed read-out electronics.(See below). Also specify the
envisaged future programme (if any) with this technology.
a) ATLAS-A n-strips AC-coupled
i) 75mu pitch (20 mins)
ii) 112.5mu pitch (20 mins)
b) ATLAS-B DC-coupled 75mu pitch (20 mins)
c) ATLAS-C double-sided 112.5mu pitch (20 mins)
Coffee
3) Discussion of technologies to define a baseline.
a) Choice of default 75mu pitch solution (20 mins)
b) Choice of default 112.5mu pitch solution (20 mins)
c) Options to be completely excluded (if any) (10 mins)
4) Discussion of prototype orders for 96/97 (numbers, # of vendors,
specifications)
a) 75mu pitch
i) Barrel (10 mins)
ii) Forward (10 mins)
b) 112.5mu pitch
i) Barrel (10 mins)
ii) Forward (10 mins)
5) Discussion of revised specifications (15 mins)
6) Timescales for remaining R&D and decisions (15 mins)
Lunch
7) Radiation testing plans and coordination Renate Wunstorf
Performance Specifications
--------------------------
I propose we discuss ATLAS-A, ATLAS-B and ATLAS-C in that order addressing
the items in the table below.
Parameter Measured value Specification
Capacitance < 1.2 pF/cm
Coupling Capacitance > 24 pF/cm
Series Resistance < 20 Ohms/cm
Implant Resistance < 100 KOhms/cm
Bias > 400 KOhms/detector
Interstrip Resistance >/= Rbias
Total Current at 300V < 50 muA
Voltage drop to strip < 20 V
at 300 V and 2 muA
Depletion Voltage < 150 V
With bipolar front-end (FElix deconvoluted acceptable for now)
--------------------------------------------------------------
> 90%
Efficiency at 3 sigma (on good strips) > 99.5%
(or at < 0.1% noise hits)
Resolution < 20mu
Performance after 10^14 protons at -5 degrees C
------------------------------------------------
> 90%
Efficiency at 3 sigma (on good strips) > 99.5%
(or at < 0.1% noise hits)
Resolution < 20mu
Power at Operating Voltage < 20mW/cm^2
_______________________________________________________________________________
Agenda - Electronics Session
_____________________________
Convenor : Alex Grillo ( grillo@scipp.ucsc.edu )
_________
Overall Aim :
____________
The SCT Electronics Review will take place on 3-December-1995. It is
anticipated that the review will take one whole day. The focus of this
review will be the three proposed readout schemes: analogue, digital,
binary. This should include the on-detector and off-detector elements
which contribute to the performance and cost comparisons that will be the
basis of choosing a baseline architecture next year. The primary purposes
of this review are:
1) Make note of the present status of each of the three readout
schemes.
2) Review the plans for each and make sure that all aspects of the
proposed readout system are covered by the plan.
3) Review specifics issues that have been raised about any of the
schemes
4) Establish a standard for comparing the three schemes.
Item (4) is especially important if we are going to make an objective
comparison and the best decisions at the two reviews planned for 1996.
Prior to the review, a table of specifications and a breakdown of
components to be costed will be circulated to the people developing each of
the three schemes . It is important that these tables be filled in prior
to the review. Then the contents of the tables can be discussed (and
debated?) at the review itself. The hope is that the comparisons can then
be made on the same parameters, using the same criteria.
The agenda below outlines topics to be covered at the review. The
discussion periods will review the performance and cost tables already
prepared. I don't yet have names of people to make the presentations which
are called out. I hope those names will be supplied by the people working
on each scheme.
Agenda :
_______
Analogue Readout Scheme:
Description of Readout System 20 min
Test Results (both on and off detector components) 20 min
Development Plan and Schedule 10 min
Plan for system commissioning, calibrations and 20 min
pedestals
Discussion of Performance vs. Requirements Table 30 min
Discussion of Estimated Cost 20 min
Digital Readout Scheme:
Description of Readout System 20 min
Test & Simulation Results (expected system 20 min
performance)
Development Plan and Schedule 10 min
Plan for system commissioning & IC calibrations 20 min
Discussion of Performance vs. Requirements Table 30 min
Discussion of Estimated Cost 20 min
Binary Readout Scheme:
Description of Readout System 20 min
Test Results 20 min
Development Plan and Schedule 10 min
Plan for On-line Monitor of SCT 20 min
Discussion of Performance vs. Requirements Table 30 min
Discussion of Estimated Cost 20 min
_______________________________________________________________________________
Agenda - Module Session
_______________________
Convenors : Nobu Unno (unno@kekvax.kek.jp )
__________ Tony Carter (aac@vxcern)
Overall Aim :
____________
Since the time allocation is about 3 hrs , the review will be limited to
the following critical issues (and measurements)
Agenda :
_______
(1) Thermal measurements
- rphi style KEK 30min
- Z style RAL 30min
This is the main item of this review. We should get the (close-to-) final
data presented here and it would be desirable if this issue is closed.
It should be reminded that not only one module but also reproducibility
(in several modules) is required.
A second thought is we may need one more turn-around to measure the
thermal properties using irradiated detectors by March/April review.
(2) Thermo-mechanical analysis
- Z and rphi styles G.Tappern? 20min
- Distortion measurement plan Oxford? 20min
We should plan to measure the distortion by cooling the modules by the
March or April review.
(3) Electrical noises - Review by ???? 30min
(4) Radiation length - Review by ???? 20min
Radiation length of the beamtest modules, and that of the proposed
final module.
(5) Forward Modules - Review by ???? 20min
First ideas on Forward module design. How much is common to the barrel?
How much additional RD is required?
____________________________________________________________________________
Agenda - Engineering Session
_____________________________
Convenors : Geoff Tappern (G.Tappern@rl.ac.uk)
_________ Eric Perrin (eperrin@cernvm)
Overall Aim :
_____________
The aim of this review is to reduce options if possible, and
to consider programmes of work and resources required to make final
decisions by Sep 96. Programmes to be shown by each speaker
Agenda :
________
9:00 Barrel Silicon structures - Carbon Fibre composite design E Perrin
9:40 Barrel Silicon structures - Space frame/stave design G Tappern
10:20 Forward SCT structure
10:40 Coffee
11:00 Discussion
12:00 Lunch
13:30 Pixels - LBL Design D Bittinger/B Miller
14:20 Pixels - Marseille Design G Hallewell
15:00 Coffee
15:30 Discussion
16:30 Cooling - Bi-phase/Binary Ice results G Hallewell
17:10 Cooling - Binary Ice R Apsimon
17:50 Discussion
18:30 Stop at this time at the latest
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Agenda - Institute Meeting
__________________________
9:00 Summary Detector Review
9:15 Discussion
9:45 Summary Electronics Review
10:00 Discussion
10:30 Coffee
11:00 Summary Module Review
11:15 Discussion
11:45 Summary Engineering Review
12:00 Discussion
12:30 Lunch
14:00 Resources required for 96
14:15 Discussion