Setup Proposal for the TRD CERN Test Beam 2004

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Setup Proposal for theTRD CERN Test Beam 2004

• David Emschermann
• Physikalisches Institut
• Universität Heidelberg

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Beamline setup
Setup is similar to 2002 test beam
x

• old monitoring detectors
• new full size TRD chamber stack
• goal angular scan of particle tracks

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Coordinate system definition
Close to orientations inside ALICE

• x test beam direction (horizontal)
• y TRD wire direction (vertical, upwards)
• z parallel to long pad axis (horizontal)

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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The ALICE detector
Inner stack (C0)
y
z
5
Test stack orientation
Inside T9, East Area
6
5
4
3
2
1
Beam
y
A stack of 6 chambers in 3 oclock position
x
DAQ
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Positioning device for TRD stack

• carries TRD stack

• remote controlled

y
x
y

• moving in y and z direction

z
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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The test stack frame

• supporting the 6 TRD chambers
• currently designed / under construction
• built from ITEM profiles
• available by end of May
• in 12 oclock position for ROC mounting
• in 3 oclock position in the test beam
• range in theta - 45 (around z axis)
• range in phi - 20 (around y axis)
• vertical range 80 cm (on pos. device)
• horizontal range 64 cm (on pos. device)

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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RB on TRD chamber
9
RB arrangement
layers 2,3,4,5
layer 1
layer 6
RB
y
RB
RB
RB
RB
z
Placement of 6 (8) RBs in the test beam
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Theta acceptance
x
Theta range 6 MCMs 8 6 RBs 29 8 RBs
42 ALICE 45
z
8 RB needed for full theta coverage !!
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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TRD Readout chain inside ALICE
DCS
Tracklet
Tracklet
OASE
GTU
Processor
PASA
ADC
TRD
Merger
TP
TM
We cant do all this in the test beam ! gt Lets
simplify
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
12
TB Readout scheme Baseline
DCS
Tracklet
Tracklet
Processor
PASA
ADC
TRD
Merger
TP
TM

• 6 or 8 fully equipped RBs with DCS boards
• fast readout via readout tree
• use merger MCMs or many ACEXs cards
• slow control via DCS boards

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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TB Readout scheme Backup I
DCS
Tracklet
Tracklet
Processor
PASA
ADC
TRD
Merger
TP
TM
In case of trouble with the fast readout

• Fully equipped RBs with DCS boards
• slow readout using the DCS boards
• data accessed via DIM and SCSN

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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TB Readout scheme Backup II
Tracklet
Processor
PASA
ADC
TRD
TP
Running the TRD test beam without RBs

• Use 6 single MCMs
• readout via SCSN and 6 ACEX cards
• allows only very restricted angular range !!

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Readout tree with merger chips
1
2
3
4
5
6
RB
RB
RB
RB
RB
RB
RB
RB
Tracklet
Tracklet
Merger
Merger
TM
TM
Tracklet
Merger
LDC
TM

• This requires
• 3 merger boards
• buffering memory
• data serialiser
• (to be developed)

Ethernet
ACEX
GDC
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Readout via many ACEX cards
1
2
3
4
5
6
RB
RB
RB
RB
RB
RB
RB
RB
LDC
Ethernet
GDC

• requires 6/8 ACEX
• cards and a big PC
• same setup as for backup II (MCMs only)

ACEX
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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DAQ DCS setup
Switch
Counting room
TRD stack
Ethernet / Fast Ethernet
DCS
GB Ethernet
RB
GDC
PVSS
Switch
FEE LDC
VME LDC

• All data shipped by GB/Fast Ethernet
• VME and FEE PC are both LDCs in the DAQ

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Trigger setup
Still to be defined A CCT VME processor

• (needed each for trigger and monitoring dets)
• can be loaned from CERN for 106 CHF/month
• has been reserved
• needs to be confirmed until next week

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Status of components

• All 6 chambers no problem
• Support frame no problem
• Services HV, LV, Gas, Cooling - no problem
• Final Electronics will come quite late
• New DAQ system will be a big task

Need time and people for setup and tests !
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Electronics DAQ status
We have right now (04/2004)

• Electronics
• A PASA on a TRD chamber
• DAQ
• A PIII running CERN RH Linux 7.3.3
• An ALICE DATE 4.7 installation
• A running DDL link

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Planning
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Short term goals

• Get a RB running on a TRD chamber
• Participate at TPC test beam in May
• Try to copy existing DAQ setups

David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Summary and Outlook
Planning is advancing well Final electronics is
available only few weeks before TB gt Setup of
DAQ and electronics will be critical
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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In other words
We have to hurry or we run out of time.
David Emschermann TRD
Status Meeting Heidelberg 15/04/2004
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Thank you