INFRASTRUCTURE of LHE JINR for TRD CHAMBERS PRODUCTION' QUESTIONS of CHAMBERs TESTING

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INFRASTRUCTURE of LHE JINR for TRD
CHAMBERS PRODUCTION. QUESTIONS of
CHAMBERs TESTING
Yu. Zanevsky
Laboratory of High Energies JINR, Dubna
http//lhedl.jinr.ru/
MAIN ITEMS
INFRUSTRUCTURE

TESTING of the CHAMBERS - during
production (before closing) - after production
(after closing)
WHAT WE NEED to START ?
TRD Collaboration Meeting, Trento March
3-4, 2003
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LHE JINR EXPERIENCE with HADES MDC
1. Full Scale Prototype (development and
testing , ? 68 ? )
2.Production of multilayer low-mass drift
chambers, Plane 2.
(Alu - wires, He- based gas mixture, very
thin frames -2,5 mm, 6 anode planes in one
chamber, high longterm stability operation)

3.Development and production of FEE
(27.000 channels, high reliability) .
4. Development of Tracking Software for whole
MDC system
(hit finding and track fitting).

TRD Collaboration Meeting,
Trento March 3-4, 2003
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LHE JINR EXPERIENCE with HADES MDC
2000
1998
1997
TRD Collaboration Meeting, Trento March
3-4, 2003
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INFRASTRUCTURE

CLEAN ROOMS (120 m2 ) with CLIMATE, at
bldg. 40
- class 10.000 (will be improved )
NEW WINDING MACHINE , PC control (? 20 ?,
will be improved)
TABLES (3 units)
TRD Collaboration Meeting, Trento March
3-4, 2003
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CLEAN ROOMS
3 rooms ( frames winding, transfer of
wire planes, chambers assembling)
Total area 120 m2
2 1 tables (2-3 tables will be installed
additionally)
TRD Collaboration Meeting, Trento March
3-4, 2003
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NEW WINDING MACHINE
TRD Collaboration Meeting, Trento March
3-4, 2003
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TESTING of TRD CHAMBERS
1. TESTING of PCB PLANES - PADs quality (
contact, short circuits, cross-talks, noise )
- hermeticity (PCB with sandwich and connectors)
- in box
2. TESTING DURING PRODUCTION - HV test
of Cathode Planes and PCB (with sandwich) -
HV test of Anode planes
3. TESTING of THE CHAMBER BEFORE
CLOSING - HV test with grounded PCB
(leakage current) - Counting plateau (Fe-55,
Ru-106, X-ray tube), noises - Gain uniformity
on chamber area ( with mask) - Gain
stability (24 hours)
4. TESTING AFTER CLOSING of THE CHAMBER
- the same as for item 3 - Gas leakage,
measurement of humidity - Plateau of
efficiency (Ru-106, X-ray tube , cosmic) -
Signals from each PAD ( FULL TEST)
5. PASSPORTIZATION of THE CHAMBER PARAMETERS
(in database)
TRD Collaboration Meeting, Trento March
3-4, 2003
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MATERIALS WHICH WE NEED FOR THE
PROTOTYPE AND CHAMBER PRODUCTION
(from our German partners)
- pad planes - sandviches
- radiators - profiles
- Stesalit (G-10) parts - fieldcage
PCBs - gas fittings - Alu
-plate (table) for chambers assembling
- FEE , cables, connectors (for production
and testing)
SHOULD BE AGREED
TRD Collaboration Meeting, Trento March
3-4, 2003
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WE NEED TO BUY - tables
(2-3 additionally)
- vacuum table - humidity monitor - gas
leak hunter - electronics and HV modules,
PCs - fun filters - rest materials for
chambers production - 1D device for the
pitch measurement
TRD Collaboration Meeting, Trento March
3-4, 2003
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ORGANIZING QUESTIONS
- AGREEMENT should be signed between JINR
- HD - GSI (in April ) (to overcome the
customs problem) - 1 or 2 times per
month Technical Coordinator or Spokesperson
should inform the Collaboration (by
E-mail) about Status of TRD project (as
was sucsessfully used at STAR experiment)
- Realistic time schedule for the Project
shoud be worked out
TRD Collaboration Meeting, Trento March
3-4, 2003
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MEETINGS at GSI and JINR

TRD Collaboration Meeting, Trento March
3-4, 2003