RD51-WG7 2009-XI
RD51 Test Beam
22.10 to 1.11.2009
Tentative setup
Dates, constraints, notes
• 9 available days (22 Oct to 1 Nov), maybe
10 if we get the 2nd of November
• 5 gas lines
• Max 100cm of uniform field inside the
magnet
• 5 groups, 2 inside magnet
• Still lack of information, so this proposal is
just a starting point for discussion
01/09/2009
M. Alfonsi - CERN
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Tentative setup
Goliath
(2 Saclay groups)
TPC
CEA/DSM/IRFU/SEDI
SUPER/LHC
Date : 28/07/08
TS
?
Bonn
?
R-MM
TS
CERN
beam
Ref : 000
BOITE N° 1
HT
HT
Echelle : 1
Matiere : Alu
Nbre : 1
Torérances génerales :
H11
h11
js11
Casser les angles vifs
01/09/2009
M. Alfonsi - CERN
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Tentative schedule
• Mount all the setup the first day
• Divide in 2 periods of 4 days, e.g.:
– CERN and Saclay R-MM first period
– Bonn and Saclay TPC second period
• If we get an extra day, it can be used for
low momenta beams that could need the
dismounting of upstream detectors
01/09/2009
M. Alfonsi - CERN
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Mechanics check-list
• Bonn support: check minimum height
• Goliath: check if Saclay TPC and R-MM can be
enough close to use the uniform region of the
magnetic field
• Trieste: to be placed (not enough info)
– If low X0 and enough space, downstream Bonn before magnet
– Otherwise after all the others, but it will receive beam just when magnet is
off (10% of the time when TPC is main user, 75% when R-MM).
Moreover the removal of the dipole placed there must be checked
01/09/2009
M. Alfonsi - CERN
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Gas: open problems
Gas users
• CERN table:
–
–
–
–
MM tracker:
GEM tracker:
GEM to be tested:
MM to be tested:
• Bonn: GEM TPC:
Ar/CF4/iso
Ar/CO2
Ar/CO2
Ar/CO2
95/3/2 (*)
70/30
70/30
?
Ar/CO2 , He/CO2
70/30
• Inside Goliath:
– R-MM
– MM TPC Ar/CF4/iso
Ar/iso
95/3/2
95/5 (FLAMMABLE)
• Trieste (not enough info, just a guess!):
Ar/methane
(*)
50/50 (FLAMMABLE)
maybe can be also adapted to the Ar/CO2 gas mixture of MM to be tested
01/09/2009
M. Alfonsi - CERN
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Wished (but unrealistic) solution
• An additional line will require:
–
–
–
–
42m of 6mm + 42m of 10mm ss pipes, about 700 CHF
Cleaning cost
Manpower cost (soldering expertise and autorization required)
Tight time schedule: the only two available MD are from 14.9
17.9 and 5.10  8.10
• In this framework:
–
–
–
–
–
2 lines for CERN table: Ar/CO2 70/30 all GEM, the other all MM
1 line for BONN: Ar/CO2 70/30 or He/CO2 70/30
1 for Saclay R-MM: Ar/isobutan 95/5 (flammable)
1 for Saclay TPC: Ar/CF4/isobutan 95/3/2
1 for Trieste: Ar/methane 50/50 (flammable)
01/09/2009
M. Alfonsi - CERN
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Solution B: gas to main users
• CERN, Saclay TPC, Trieste shift:
– 3 lines for CERN table: the GEM mixture (Ar/CO2 70/30) will flush
also BONN detector.
– 1 line for Saclay TPC, passing also through R-MM
– 1 line for Trieste
• BONN, Saclay R-MM, Trieste shift:
–
–
–
–
–
1 line for BONN
1 line to flush CERN table  at least one of the trackers available
1 line for R-MM
1 line for Saclay TPC
1 line for Trieste
01/09/2009
M. Alfonsi - CERN
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Solution C: if case of no TS
• CERN, Saclay TPC shift:
– 3 lines for CERN table: the GEM mixture (Ar/CO2 70/30) will flush
also BONN detector.
– 1 line for Saclay TPC
– 1 line for Saclay R-MM
• BONN, Saclay R-MM shift:
–
–
–
–
1 line for BONN
2 line to flush CERN table  at least one of the trackers available
1 line for R-MM
1 line for Saclay TPC
01/09/2009
M. Alfonsi - CERN
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Trigger and tracker
Trackers
• Available trackers:
– MM, 3 stations, 0.25 mm pitch X-Y strips, 25x25 mm2 active area,
Gassiplex readout
– GEM, 3 stations, 0.4 mm pitch X-Y strips, 100x100 mm2 active area,
working on APV and VFAT readout, used with Gassiplex
– Analysis algorithm just started
• Nobody asked for a tracker for this session, so we
mount them on CERN table to complete DAQ,
analysis, etc..
01/09/2009
M. Alfonsi - CERN
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Trigger devices
• Devices available:
– 3 scintillators, 100x100 mm2, 10 mm thick, PMT, fast & clean
signals
– 1 “finger”, 10x5 mm2, 10mm thick, a bit noisy
– maybe other devices can be found
• None of them can work in magnetic field!!
• At the moment these four devices are mounted
on CERN table
01/09/2009
M. Alfonsi - CERN
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Additional infrastructure
installation 1417 sept
(N.B. The new date!)
Cables to be added
+
+
+
+
A set of 16 LEMO cables from CERN (so 32 lines total)
2 (or 3?) fiber pairs from Saclay R-MM
1 fiber pair from Saclay TPC
1 BNC cable from Saclay TPC (?)
Wish list
+ (Flexible) Stainless gas lines from the gas panel in the experimental
hall up to Goliath setup (at least 1 inlet and 1 outlet, ~15m each)
(high priority for flammable gas!)
+ A set of BNC lines (at least 16)
+ A set of SHV cables
01/09/2009
M. Alfonsi - CERN
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Common racks and
electronics
Racks in the experimental hall
• Saclay R-MM: 1 NIM (+1 VME?)
• Saclay TPC: none
• CERN: 2 NIM + 1 VME
• BONN: 1 NIM?
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M. Alfonsi - CERN
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Racks in the barrack
• Saclay R-MM and TPC: 1 NIM if no
SY1527 for HV
• CERN: 1 NIM for HV, counters and other
modules for monitoring
• BONN: none
 Maybe one or two common NIM crates
are enough
01/09/2009
M. Alfonsi - CERN
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SYx527 for HV and LV
• BONN:
7 HV channels 2.5kV / 10µA
8 LV channels 5V / 1.5°
• CERN: no HV (not available at e-pool)
maybe LV (depending on FEE)
• Saclay R-MM: 8 HV channel, 2nA resolution
custom solution for LV
• Saclay TPC: 2 HV channel? But 2nA
resolution!
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