Danilo Domenici – LNF
Detector Upgrades Overview
QCAL
Inner
Tracker
CCAL
CSN1 - 4 Maggio 13
2
Old Interaction Region
Fake QCAL
(actually
Pb shields)
CSN1 - 4 Maggio 13
In January the old DAFNE
Interaction Region has been
extracted from KLOE and
completely disassembled
3
Modifications of IR components
New IP Spherical vacuum chamber
 New beryllium shields
 New BPMs
 Moving devices for quadrupoles QF
 Cooling of IP vacuum chamber added
 Cooling of Y vacuum chambers added
 Lead toroidal shields added
 New Cylindrical vacuum chamber support
 Improvements on alignment tools
 H supports reinforced with plates
 Modification of tail support of the girder
 Temperature probes added
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CSN1 - 4 Maggio 13
4
New spherical vacuum chamber
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CSN1 - 4 Maggio 13
Single vacuum chamber tapered
New bellows with improved design
2 BPMS around the IP
Water cooling added
New beryllium screens
5
Mounting the new IR
CSN1 - 4 Maggio 13
6
CCAL
12 LYSO crystals in each module
CSN1 - 4 Maggio 13
PCB housing SiPM and calibration LED
housed by a 3d-printed ABS case
7
CCAL
Beam
Position
Monitor
Copper coil for IR
cooling
Support
flange
for IT
QD0
CSN1 - 4 Maggio 13
8
CCAL Test
Test performed
with the
embedded
calibration LED
CSN1 - 4 Maggio 13
9
IT Layers assembling
In February the last Layer of the IT has been
completed and in the π-day (March 14) the four
detectors have been assembled together
Layer4
Ø 410 mm
CSN1 - 4 Maggio 13
Layer3
Ø 360 mm
Layer2
Layer1
Ø 310 mm Ø 260 mm
10
IT Layers assembling
Starting from the outermost one,
all the layers have been inserted
one into the other
PCB Faraday-cage cap
CSN1 - 4 Maggio 13
11
Inner Tracker
CSN1 - 4 Maggio 13
12
IT FEE cooling
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There are 90 FEE per side (180 GASTONE
chips)
The heat power created is 100W per side
There will be a general air-cooling for the
IR region and a dedicated water-colling
for the IT FEE
The system is completed by 4
distributors with valves
5 copper rings
as radiators
CSN1 - 4 Maggio 13
13
IT positioned on the sliding support
BP temporary supported by Al arm
BP welded
IT in final position
CSN1 - 4 Maggio 13
14
IT positioning on the IR
Internal FR4 support
flange
Al support
flange on QD0
0,5 mm clearance
CSN1 - 4 Maggio 13
15
QCALT
2 halves of
one calo
ready to be
mounted
LET
house
Both
QCALT
installed
on the IR
CSN1 - 4 Maggio 13
16
IR equipped with all the detectors
CSN1 - 4 Maggio 13
17
Movement of IR
May 20 the IR has
been moved close to
KLOE
Here QCALT and
IT are being
cabled and tested
CSN1 - 4 Maggio 13
18
QCALT FEE mounting and cabling
Each module is read out
using 80 SiPM channels
positioned with 0.05 mm
precision on aluminum
dioxide PCB
Each PCB has 4 front end boards
with 20 channels each with HV
regulator, preamplifier and splitter
CSN1 - 4 Maggio 13
19
QCALT cabling
Cabling of all 22 modules completed last week
CSN1 - 4 Maggio 13
20
QCALT test
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Every channel has been
tested after cabling to
check SiPM working
point and
discriminator/scaler
chain
SiPM procedure will be
done only using scaler
(no ADC present)
looking at the variation
of rate when moving
discriminator threshold
CSN1 - 4 Maggio 13
PED
1pe
2pe
Now we are preparing the set up
with final crate to perform long
cosmic run using KLOE final data
format
21
IT cabling
Each IT side has:
 90 readout cables
 69 HV cables
 36 gas tubes
 8 cooling tubes
 6 Temp. probes cables
The first 2 layers
have been cabled
CSN1 - 4 Maggio 13
22
Final HV and DAQ systems
Trigger logic
HV distributor
back side
GIB + TB
crate
HV powe supply and
Current meter
CSN1 - 4 Maggio 13
VME crates and
optic link
concentrator
23
Final gas system
Gas rack with mass
flowmeters and control in
KLOE assembly hall
Gas distributors in KLOE pit
CSN1 - 4 Maggio 13
24
IT cosmic ray test
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We check that all the connections are
properly done
To complete the scan we move the
trigger in 6 positions
600 cosmics (1 ÷ 4 hours) per each
position are enough
2 scintillators trigger
Layer1 test completed last week
CSN1 - 4 Maggio 13
25
Next step: insertion into KLOE
KLOE DC inner hole
(500 mm diameter)
CSN1 - 4 Maggio 13
Rails and shell used for the
extraction of the old IR
26
Insertion clearances
The shell will be
shifted upward to
increase the top
clearance
Sides will be machined to
gain 2 mm
CSN1 - 4 Maggio 13
8 mm will be the minimum clearance
available between DC and IR
27
Modification of the Shell
A 50 cm extension part
of the shell has been
built to allow the
routing of the cables
Shell Extension
Cable routing
CSN1 - 4 Maggio 13
28
Time Schedule
6 week delay due to Be screens delivery
Now we have 3 weeks delay
CSN1 - 4 Maggio 13
29
Conclusioni
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La fase 2 di KLOE-2 è iniziata a gennaio 2013
La vecchia IR è stata completamente
disassemblata e rinnovata
I 3 nuovi rivelatori (CCALT, QCALT, IT) sono stati
installati con successo sulla IR
CCALT e QCALT sono stati cablati e verificati
Cablaggio e test dell’IT sono in corso e dureranno
4 settimane
CSN1 - 4 Maggio 13
30