EMCal Electronics Status
Terry Awes
ORNL
ALICE EMCal Meeting, Nantes
0
July 15-17, 2008
Strip Module Internal Components
APD+Preamplifier, Transition Card, (LED fiber
distribution), Temperature sensor
2007
Prototype
Modules
Transition Card
ALICE EMCal Meeting, Nantes
1
July 15-17, 2008
Strip Module Internal Components: Status
• APD: Ordered - 5000 US, 1300 Catania (Hamamatsu)
– Quoted Delivery (as of June 3):
HPF/CERN (total 5K HPI/INFN (total 1.3K
pcs)
pcs)
July
450 pcs on 7/14
450 pcs on 7/7
300 pcs on 7/28
300 pcs on 7/22
August
300 pcs on 8/25
300 pcs on 8/6
September
150 pcs on 9/22
250 pcs on 9/8
3800 pcs-->
Checking
ALICE EMCal Meeting, Nantes
2
July 15-17, 2008
Strip Module Internal Components: Status
• Preamplifier: Ordered - 7000 US+EU (Gnomes Design,
Japan - PHOS supplier)
– Quoted Delivery (as of July 1):
Mr.
Terry.
Terry
さんから納期短縮のご依頼 理解しました。
The
date confirmation work of parts is being done now.
現在delivery
部品の納期確認作業を行っております。
To our regret, it takes time to the part procurement.
残念ながら 部品調達には 時間がかかります。
This substrate schedules a halogen free substrate.
今回の基板は
After
it obtains it ofハロゲンフリー基板を予定しています。
entire goods, current year is scheduled to be
ハロゲンフリー基板の特性上
基板製造、組立作業を
produced
in the lump the substrate manufacturing
on the characteristic
and
the assembling work
of a halogen free substrate.
全部品の入手後
今年度分を一括生産する予定です。
現時点では 最速の納品でも8月中旬以降の予定です。
The delivery of goods of the velocity is a schedule now after the
ご要望ん従い 出来るだけ早く納品したいと思います。
middle of August.
お待ち下さい。
Iもうしばらく
want to follow and
to deliver demand as soon as possible.
Please
wait for a while.
納品可能な日時分かりましたらご連絡いたします。
When the date that can be delivered is understood, I will report.
ALICE EMCal Meeting, Nantes
3
July 15-17, 2008
Strip Module Internal Components: Status
• Transition Cards:
– PCBs Ordered - 820 US+EU (144 for 2 SM)
• Quoted Delivery July 4
• Components ordered, most received
• Molex cables
– Ordered 7000 (2304 for 2 SM)
• Expected delivery late September - Long story
– Initially given 2 week delivery
– Delay to receive quote due to PHOS non-payment
– Delay due to non-compliance with CERN standards
(Halogen) waiting for quote with compliant halogenfree cables
– Quoted delivery now 12 weeks - due to materials?
ALICE EMCal Meeting, Nantes
4
July 15-17, 2008
Electronics: Testing/Calibration
• Test APD+preamplifier (Houston, Catania)
– Initial APD gain vs Voltage measurements, QA
• Test FEE cards after production (CERN)
– Confirm all channels have proper FADC outputs
– Confirm APD bias control works properly
– Measure Hi/Low amplifier channel gains
• Calibrate Super Modules (Yale, Grenoble)
– Measure APD voltage-gains for each channel
– Obtain pre-calibration with cosmics
– Determine APD operating voltage for each channel
No special test fixtures will be built. Instead we will use
EMCal FEE setups as test station(s). Test stations at:
– Houston, Catania (exists) for APD+preamplifier tests
– CERN (exists) for FEE/TRU/crate tests
– Yale, Grenoble for SM test and calibrations
ALICE EMCal Meeting, Nantes
5
July 15-17, 2008
APD Test Setup
• Houston setup:
– LED Driver, FEE Card, T-Cards, FEE Cables, GTL bus, RCU,
DCS, SIU, DRORC, PC, LV cables, fiber optic, ethernet+DAQ
tested at CERN, now at Houston
– Chiller ordered, mechanical pieces under construction
• Completely implemented already at Catania
• Need to design/build APD lightguide gluing fixtures.
ALICE EMCal Meeting, Nantes
6
July 15-17, 2008
SM Calibration Setup
• System components (Yale, Grenoble)
– DAQ + 2 DRORC cards (for readout of up to 4 RCUs)
– Mini-Crate with FEE+GTL bus + RCU + DCS + SIU + Trigger
card + cables (LV, Fiber, ethernet) for testing
– For SM: LV for RCU+FEE, DDL fiber, Signal
cable+connectors (to be made for 1SM each), Temperature
sensors + cables (to be made 3SM each)
– ELMB system with distribution blocks for 8 T measurements
in assembly area + 8 T measurements on SM
– LV supply for full SM (for Yale, September for Grenoble)
• Full system setup and tested at Grenoble
• Ready to ship to Yale (confirm RCU working)
ALICE EMCal Meeting, Nantes
7
July 15-17, 2008
EMCal SM Readout
• 3 Shielded Ribbon Cables per Strip Module (round!) - APD bias, preamp
LV and signal. Ground shielding at APD and/or FEE end?
• One 3mm Fiber per Strip Module for LED monitoring (WSU)
– 1m (7x1mm) fiber extension to 3mm fiber - Catania proposal • Yes! Fabricate at WSU?
– One monitoring fiber per 3mm fiber
• Readout via photodiode+preamp+T-card - 2/SM
• Mount fixture design? Location?
• 8 Temperature Sensors per SM - Where?
– T sensor cable to ribbon cable block
• Between FEE crates
3 2 FEE Crates
~3.5m
ALICE EMCal Meeting, Nantes
8
July 15-17, 2008
EMCal FEE Crate
From
Didier
Gabrielle
ALICE
EMCal
Meeting,
Nantes
9
July 15-17, 2008
EMCal FEE Installation in ALICE
Readout electronics/LED system
•
Readout electronics of a SuperModule of 24x48 towers sits in a water-cooled
enclosure attached to the SM. Attached during SM assembly and used for
calibration.
• Two FEE crates (2 RCU) each with 2 GTL branches with 9 FEE cards.
• A group of 12 FEE cards will be connected to a TRU to form a Trigger
Region.
10
ALICE EMCal Meeting, Nantes
July 15-17, 2008
EMCal FEE Crate Status
• Design complete
• All commercial card guides and supports delivered
• Prototype crate built at CERN including cooling manifold
– Cooling manifold tested with PHOS negative pressure cooling
water system
• No leaks!
• All copper panels uniformly at 18oC (temperature of cooling water)
with ambient T=27oC
• After heating copper panel locally to 60oC it returned to T=18oC in
90 seconds.
• Plan
– Build cooling manifolds for all 22 FEE crates at CERN
– Make parts for 4 FEE crates (2 SMs) at CERN
– Make parts for other SMs at ?
ALICE EMCal Meeting, Nantes
11
July 15-17, 2008
EMCal FEE Crate Status
•
•
•
Intermediate PCB - backplane of FEE crate with connectors to ribbon
cables from SM; ordered for all SM
– 4 versions: upper & lower, 9 and 10 FEE connections
– PCBs ordered, delivery any day now
– Connectors ordered, partially delivered
GTL bus - (delay due to check & modification of Serial I/O lines)
– PCBs quotes being received - order in next days
– Components ordered, partially delivered
RCU boards - Need 4 for 2 SMs
– Not clear if will be available
• order for 80 new RCUs has not yet gone out
•
•
•
DCS boards - No problem to get 4 for 2 SMs,
– May be a problem to get 22 for EMCal
SIU boards - No problem
FEE LV bus in crate: cable+connectors purchased (all SM) and made for 2
SM (Cal Poly, San Luis Obispo)
ALICE EMCal Meeting, Nantes
12
July 15-17, 2008
FEE Card Status
• FEE Cards - for all SMs (396 needed)
– PCBs quotes from HUST and ELTOS (lowest) waiting
for third quote, then place order
– “Reject” cheap ALTRO chips tested at LUND, 599
ALTROs for EMCal (150 FEE boards)
– GTL chips already purchased
– FEE component price search underway by CERN
• Maybe a mistake?!
– Plan to have FEE cards complete by late September
• Would like them sooner of course…
ALICE EMCal Meeting, Nantes
13
July 15-17, 2008
LED Monitoring System Status
• LED system criteria:
– Prototype system performed well
but too bulky.
• Need 24 LEDs per SM
• issues: double-pulses, reproducibility
– Ideally, should vary LED delays to
match LED pulse timing to
physics signals
– Amplitude variability would be a
plus, but not at the price of
stability
ALICE EMCal Meeting, Nantes
14
July 15-17, 2008
LED Monitoring System Status
• Catania solution: Use essentially the same prototypes
packed into a high density copper box with one fan-out and
8 LED drivers per box.
– Prototype built and tested
• Meets space restrictions to fit 3 boards into gap between 2 FEE
crates
• Good performance, as expected, (no double pulsing…)
• Good electrical isolation - probably cannot do better
• Possibility to add additional cable delay of (n-1) ns * 20cm/ns to
each channel within box.
– Two additional driver boxes being constructed from
existing drivers (for Grenoble, Yale) to be ready to use
when SM assemby and testing begins
ALICE EMCal Meeting, Nantes
15
July 15-17, 2008
LED Monitoring System Status
• New LED driver solutions:
– Solution A: Ambitious: Build new 8 or 12 LED channel
boards with amplitude and gain control via DAC
• DAC control via modified FEE for LED readout to use FPGA on
FEE to control LED boards
• Need to prototype - might expect problems
• Need to modify FEEs and develop FPGA code for control
– Solution B: Better: Build new 8 or 12 LED channel
boards with exactly same functionality of prototypes
• Cheaper to build than individual drivers, less mechanical work,
more elegant
• Some risk of problems due to increased cross-talk
• Possible to add additional cable delay of (n-1) ns * 20cm/ns to
each channel?
ALICE EMCal Meeting, Nantes
16
July 15-17, 2008
LED Monitoring System Status
• Need to design/build new RCU trigger boards
– “Existing” RCU trigger boards have only trigger input to trigger
DAQ externally via the RCU.
• Basically a NIM to TTL convertor to give input signal of proper
amplitude and width to RCU FPGA input.
• Used in beam test and systems being shipped to
Houston,Yale,etc….
– In ALICE, the LED system will be triggered by Pre-Pulse trigger,
only available via TTC, I.e. available in RCU
• Use RCU FPGA output to trigger LED drivers
• Positive output only - not NIM signal – Need to modify LED trigger fanout boards
– Need new boards at time of SM installation
• Design will be started when Valencia student arrives (September)
ALICE EMCal Meeting, Nantes
17
July 15-17, 2008
LED System: Other Issues
• Decision to build 1m long 7x1mm extensions to 3mm fibers
– Yes, at WSU
• Location of fibers for monitoring LED output
– At Strip module distribution on back of SM (default)
– Or at coupling of extension to 3mm fiber near FEE crate
• Tests underway by Francesco
• Readout of monitoring fibers: 24 LEDs using 1 FEE card.
– Photodiode+preamp+molex+T-card+ribbon to FEE
– Either on back of SM, or at FEE crate (see above)
• If on SM: must be <~3cm thick for clearance during SM insertion
– Need to design T-card+preamp+APD+fiber fixture
• T-card?
– Default: Use normal EMCal T-card (12 of 16 channels used)
– New T-card: Make a new 12-channel T-card as compact as possible
ALICE EMCal Meeting, Nantes
18
July 15-17, 2008
EMCal Trigger Status
See talks by Hans and Olivier
Summary:
• Production of prototype TRU end of ~July
• Production of prototype STU end of ~July
• Prototype tests August-September
• Production in Fall
• Try to have TRUs installed at SM assembly sites for first
SMs
– If not, then should be installed in FEE crate prior to
installation on CALFrame.
ALICE EMCal Meeting, Nantes
19
July 15-17, 2008
Electronics Services
Rack O12 - EMC
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Netgear switch
Netgear switch
cable feedthrough
Turbine + Rack Monitoring
Heat Exchanger
Wiener PL-500/F12
+13.7 V OM21.0001
Wiener PL-500/F12
2-8V OM21.004
Wiener PL-500/F12
2-8V OM21.004
Wiener PL-500/F12
2-8V OM21.003
2x12 LV Patch Panel
2x12 LV Patch Panel
Air Deflector
ALICE EMCal Meeting, Nantes
Rack Y10 - EMC/PHOS/CPV
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Turbine + Rack Monitoring
Heat Exchanger
Unused
SY2527
(CPV)
Patch panel
(CPV)
space for heat exchanger
Cable feedthrough
Iseg
(PHOS)
Patch Panel
(PHOS)
space for heat exchanger
Cable feedthrough
Iseg
(EMC)
Patch Panel
(EMC)
Unused
• EMCal HV and LV
– Strasbourg purchases
• HV crate + 4 modules (1 module
per EMCal “quadrant”
– ISEG Crate + 1 module
purchased for CERN beam
tests
– 2 more modules purchased
• LV Wiener
– One 0-15V 12-channel for
EMCal purchased
– One 0-8V 6-channel per
quadrant - 2 purchased
– One 0-8V 12-channel for SM
assembly at Yale and
Grenoble - 2 purchased
Air Deflector
20
July 15-17, 2008
Other work during access: Services
• Installation of LV and HV
supplies
• Busybox
• Cables
– HV cable connectors +
distribution panels
– Ethernet connectors +
patch panel
– Change TRU LV cables
(probably)
– LV and HV cables for LED
Drivers
– Cables to BusyBox
ALICE EMCal Meeting, Nantes
21
July 15-17, 2008
Extras
ALICE EMCal Meeting, Nantes
22
July 15-17, 2008
FEE / Trigger / DAQ Overview
Same ReadOut for TPC/PHOS/EMCal
• 9 FEE + 1 Trigger Region Unit (TRU) setup/readout via GTL bus.
• Readout Control Unit (RCU) controls FEE on up to 2 GTL bus branches.
• Detector Control System (DCS) RCU daughter card for FEE setup (e.g. APD bias)
• Data to DAQ via Detector Data Link on RCU - passed to High Level Trigger.
ALICE EMCal Meeting, Nantes
23
July 15-17, 2008
Trigger / DAQ Connectivity
• PHOS Trigger Region Unit
(TRU) provides one L0 and
3 L1 triggers on shower
energy (4x4 towers) - g and
p0 trigger.
• L0 and L1 triggers must
be ORed before input to
CTP.
PHOS Trigger OR
TOR-> EMCal STU
ALICE EMCal Meeting, Nantes
• An L1 EMCal jet trigger
will require a new post-TRU
trigger module - Summary
Trigger Unit (STU).
24
July 15-17, 2008
EMCal LED Gain Monitoring System
• LED system needed for
gain adjustment and gain
monitoring.
• One fiber per module
(shown) excites WLS
bundle - low efficiency.
• 12 modules (fibers) per
strip module fed by one
3mm fiber from remote
LED to strip module.
• Prototype LED driver used
in test beam.
ALICE EMCal Meeting, Nantes
25
July 15-17, 2008
Summary Trigger Unit (STU)
STU specification :
•
L0 trigger : OR of the 32 L0 calculated by the TRU.
•
L1-gamma trigger: Energy summed over sliding window of 4x4 towers (2x2 fast
OR) and compared to a multiplicity (V0 det) dependent threshold.
•
L1-jet trigger : Energy summed over a sliding window of n*n subregions and
compared to a multiplicity dependent (V0) threshold.
TTC link
L0
L1-gamma
LVDS links
4 diff pair
Ethernet
TRU
CAT7 cable
TRU is clocked by the BC clock
forwarded by STU (40.08MHz)
ALICE EMCal Meeting, Nantes
STU
L1-jet
To CTP
32 TRU
TRU
DDL
DCS
Multiplicity
from V0
26
Put trigger data in the data stream on
L2a (via DDL)
July 15-17, 2008
Summary Trigger Unit (STU)
STU Design :
• Closely follows Trigger OR (TOR) design (shown).
• TOR used by Grenoble in “LoopBack” test to
demonstrate LVDS serial data link feasibility.
• Main differences with TOR
– TTC for better clock signal for serial clock
– DDL link to insert trigger data into data stream
– Virtex5 firmware
• Plan to have TOR as STU as backup, and STU as
TOR upgrade for PHOS.
ALICE EMCal Meeting, Nantes
27
July 15-17, 2008
Jet Trigger
• New EMCal development (CERN, Jyvaskyla,
Grenoble)
– Upgrade of PHOS TRU FPGA from VIRTEX2 to
VIRTEX5: programming, prototypes, tests. (MIE,
CERN, Jyvaskyla)
• Backup plan: PHOS TRU could be used for EMCal, but
upgrade to VIRTEX5 will simplify implementation and reduce
production cost.
– TRU upgrade layout completed (CERN, Jyvaskyla)
– Design, build, program, and test Summary Trigger Unit
(STU) module.
– Layout of STU just begun
– TRU and STU prototype tests expected for May/June
ALICE EMCal Meeting, Nantes
28
July 15-17, 2008