ug-crate status
DESCRIPTION
UG-crate status. AMS TIM - CERN - 15/4/2008 A.Bartoloni, B.Borgia, F.R.Spada* INFN Roma. UG-electronics in the TRD Gas System. UG electronics design history. Replace the TPSxxxx regulators with SEL free LP2989 (UGBS, UGBC, UGFV) - PowerPoint PPT PresentationTRANSCRIPT
UG-crate status
AMS TIM - CERN - 15/4/2008
A.Bartoloni, B.Borgia, F.R.Spada*
INFN Roma
F.R.Spada - UGcrate status - AMS TIM - 25/4/2008 2
UG-electronics in the TRD Gas System
F.R.Spada - UGcrate status - AMS TIM - 25/4/2008 3
UG electronics design history
EM QM
Aug 2004Design of control electronics from EM to QM updated after test session
Feb 2005Contract issued to G&A Engineering for construction and qualification of QM and FM
May 2005
Radiation test of few components performed at Karlsruhe, under the supervision of A.Kounine
Further modifications introduced because of gas circuit changes
No basic circuit modified (ADC, switches, serial link, …)
QM QM2
Jan 2007A list of 15 components in QM identified by Th.Siedenburg, that may be not be approved by the collaboration
Feb 2007 1 component rejected (linear regulator TPS73xx)
Jun – Sep 2007
Revision of the layout
Following the change of linear regulators, of power distribution scheme and several changes required by safe operation (short circuits on cables or components), design needs major modifications
Sep 11, 2007 Go-ahead for the QM2 construction
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QM to QM2 modifications
Replace the TPSxxxx regulators with SEL free LP2989 (UGBS, UGBC, UGFV)
Put limiting resistor on Kulites and GP50 power supply lines (UGBS, UGBC)
Separate 12V power supply for UGPS and flipper valve (UGFV)
Introduce LP2953 regulator to generate 24V for pumps high speed (UGBP)
Introduce LP2953 regulator to generate 21V for analog mux (UGBP)
Eliminate 3.3V DC-DC converter generate 3.3V from 5V on backplane
Introduce Solid State Fuses (SSF) for short circuit protection on 5V, on each module
Introduce pull-down resistors on Mosfet gates
Introduce differential amplifier on Kulite inputs
Eliminate UHVG redesign of backplane
Eliminate 2 UGFV and reduce 8 multiple channels to 4 redesign of pcb
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UG electronics test history
(1) since then, QM1-UG widely used for the TRD gas functional tests
(2) SlowControl software used on QM1-UG and for QM2-UG functional tests
(3) found a few problems in the FM gas circuit cabling (pumps and spirometer)
(4) found some anomalous behaviour in interaction with UGPD - solved
QM1 Jul 2006 UG functional tests at G&A Carsoli ok(1)
QM2
Feb 4-12, 2008 UG functional tests in Rome ok(2)
Feb 13-29, 2008 UG ESS + TVT qualification at SERMS ok
Mar 4, 2008 UG at CERN for functional tests with gas circuit ok(3)
Mar 12, 2008 UG in Rome waiting for UGPD
Mar 14, 2008 UGPD arrived in Rome
Mar 18, 2008 UG+UGPD functional test ok
Mar 25-27, 2008 EMC UG+UGPD test at SERMS ok(4)
FM Mar 2007 FM-UGPS installed at Aachen
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QM2 UG-electronics qualification test set-up
UG CRATE
TV / EMCCHAMBER
EPPCANBUS
POWER SUPPLIES A
POWER SUPPLIES B
29V 12V 5V
GASSYSTEM
SIMULATOR
ADC/DACNATIONAL
INSTRUMENT
TEST STATION
SLOW CONTROL
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List of operations for qualification tests
1. UGSCM A and B are initialized; 2. all valves controlled by UGBS (V1a, V2a, V3a, V4a, V10a,
V20a, V1b, V2b, V3b, V4b, V10b, V20b, Sp1, Sp2) are enabled and opened for 5 s one at a time, and status is read, then disabled;
3. all pressure sensors controlled by UGBS (P1a, P2a, P1b, P2b, Pk1c, Pk2c, Pk1d) a re read out;
4. all heaters controlled by UGBS (H1, H2, H3, H4, H5) are enabled and started for 1 minute, then disabled, one at a time;
5. operations 2 to 4 are repeated 4 times: [UGSCM-A + UGBS-A], [UGSCM-A + UGBS-B], [UGSCM-B + UGBS-A], [UGSCM-B + UGBS-B];
6. all power supplies (25V, 12V, 5V, 8.5V) controlled by UGBC are enabled, and the status is read out;
7. all valves controlled by UGBC (V6a, V18a, V6b, V18b, V6a&V18a, V6b&V18b) are enabled and opened for 5 s one at a time, and status is read, then disabled;
8. all pressure sensors controlled by UGBC (P3, P4) are read out;
9. all circulation pumps controlled by UGBC (CP1, CP2) are enabled at H speed, started and stopped after 5 s, then enabled at F speed, started and stopped after 5 s then disabled, one at a time;
10. all UGBC serial ports (RS232_1, RS232_2, RS232_3, RS232_4) are enabled and the status is read, then disabled;
11. all power supplies (25V, 12V, 5V, 8.5V) controlled by UGBC are disabled;
12. operations 6 to 11 are rep eated 4 times: [UGSCM-A + UGBC-A], [UGSCM-A + UGBC-B], [UGSC M-B + UGBC-A], [UGSCM-B + UGBC-B];
13 . a ll po wer su pplies con trolled by UGFV (12VPS, 12VFV, 21V, MUX) are enab led;
14 . modu les 1 to 4 are se lec ted one at a time, and for ea ch modu le, va lves V1 to V5 a re op ened then closed afte r 5 s;
15 . multiplexers 1 to 4 are se lected one at a time, and for each multiplexer a ll press ure sen sors (P1 , P2, P3, P4, P5) are read o ut;
16 . a ll po wer su pplies con trolled by UGFV (12VPS, 12VFV, 21V, MUX) are d isab led;
17 . operat ions 13 to 16 a re re peated 4 times : [UGSC M-A + UGFV-A], [UGSCM-A + UGFV-B], [UGSC M-B + UGFV-A], [UGSCM-B + UGFV-B].
Time needed to perform all commands: 15 minutes
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UG crate in the termal chamber
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UG crate on the vibration plate
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Termal test profile
Before vibration After vibration
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UG crate being prepared for TV test
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TVT temperature and pressure profiles
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EMC test setup
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EMC test setup
UG crate
UGPD 5.6V, 12V, 29V
from UGPD
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EMC test setup
UG crate
UGPD
Marotta, pumps & flipper
simulator
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EMC test setup
28V power supply for UGPD
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Problems encountered during EMC test:
CE03: at 15kHz exceeded limit by ≈ 3db
Inserted a 500 µF capacitor on 29V line to the backplaneSolved
RS03: at 60V/m, 240MHZ lost LeCroy communication between UGSCM and UGPD (with UGSCM UG crate ok)
Elimination of one ground loop on LeCroy bus at UGPDShielded 12V and 29V power cables (originally, twisted)Solved
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Conducted emission around 15 KHz with capacitor on 29V
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Summary• QM2 was qualified at SERMS, Terni
• Both the ESS and the TVT showed full functionality of the electronics, with stability of sensor readings within 0.3-0.4 % in all temperature ranges
Full reports are under preparation by the test laboratories
• Only two modifications will be implemented to the FM electronics:1. one 470 µF capacitor on the backplane connected to the 29V A and 1 on the
29V B to comply with the EMC test2. 3K Ω pulldown resistors on RX0A and on RX0B on the backplane to avoid
feeding static 5V from UGSCM to RS232 components in the UGBC
The required ECO's will be issued
• No modifications required by the ESS or by the TVT test• No modifications required by the functionality test performed on the actual gas
circuit• The spirometer was correctly read, and the pumps were correctly operated when
correctly connected
We require that 1. on the UGPD FM controller S9011A, the grounding 0 ohm resistor for the
return line of the 3.3V be removed2. on the UGSCM FM the pull-up resistors on RX lines be removed 3. the power cables between UGPD and UG be shielded
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UG-electronics schedule
QM2 21/01/08 QM2 boards ready functional tests
11/02/08 13/02 ready to start qualification tests (SERMS)
29/02/08 29/02 end of qualification tests (no EMC)
05/03 ready to start tests at CERN
14/03/08 07/03 end of tests at CERN
25/03/08 start EMC test
27/03/08 end EMC test
Go-ahead for FM with 2 weeks delay
FM 04/04/08 21/04 FM boards delivered by G&AStart acceptance tests @ SERMS
21/04/08 05/05 end of FM boards acceptance tests
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BACKUP SLIDES
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Radiated immunity loss of UGSCM UGPD communication
60 V/m
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Conducted emissions
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EM to QM modifications
Change power supply: 24V 30V supply for Kulite, Marotta valves, pumps, heaters
Pumps power supply: 12V directly from DC-DC converter24V with step-down circuit 30V 24V
Heaters on CO2, Xe vesselson/off switches identical to Marotta valves
Kulite gauges
Dallas T sensors replacing GP-50 T+ n. 2 dedicated links to USCM
No basic circuit modified (ADC, switches, serial link, …)