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Stato elettronica UG controllo TRD

26 Marzo 2008

A.Bartoloni, B.Borgia, F.Spada

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UG-electronics in the TRD Gas System

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QM design

• Design of control electronics from EM to QM updated after test session in August 2004

• Contract issued to G&A Engineering for construction and qualification of QM and FM UG electronics February 2005

• Radiation test of few components performed at Karlsruhe, under the supervision of Andrei Kounine, May 2005

• Further modifications were introduced because of gas circuit changes, e.g. 24V to 30V

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EM QM

1. Change power supply: 24V30V (supply for Kulite, Marotta valves, pumps, heaters)

2. Pumps power supply: 12V directly from DC-DC converter, 24V with step-down circuit 30V24V.

3. Heaters x CO2, Xe vessels: on/off switches identical to Marotta valves switches

4. Added Kulite gauges

5. Dallas T sensors replacing GP-50 T: + n. 2 dedicated links to USCM

No basic circuit was modified, i.e. ADC, switches, serial linkQM FUNCTIONALITY TEST: JULY 2006

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Componenti

TIM January 2007: Siedenburg presentò una lista di circa 15 componenti che secondo lui non erano approvati dalla collaborazione.

Di fatto un solo componente fu riconosciuto non accettabile.

Questo episodio ha scatenato una messa in mora, assolutamente non giustificata, della progettazione di Roma dell’elettronica UG.

E’ stata imposta una stretta supervisione di Aachen che ha richiesto l’approvazione formale di ogni passo nella progettazione e realizzazione della versione QM2.

In pratica la supervisione ha evitato due errori di layout ma ha ritardato notevolemente la realizzazione del QM2.

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QM to QM2……..

Following the change of linear regulators TPS73xx, of power distribution scheme and several changes

required by safest operations (short circuits on cables or components),

we had to design new QM UGxx boards with following major 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 set-up

UG CRATE

TV CHAMBER

EPPCANBUS

POWER SUPPLIES A

POWER SUPPLIES B

29V 12V 5V

GASSYSTEM

SIMULATOR

ADC/DACNATIONAL

INSTRUMENT

TEST STATION

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Test set up

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Vibration test

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TVT

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Qualification test command list

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) are 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 ar e rep eated 4 times: [UGSCM-A + UGBC-A], [UGSCM-A + UGBC-B], [UGSC M-B + UGBC -A], [UGSC M-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 opened 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], [UGSC M-B + UGFV -B].

Time needed to perform all commands: 15 minutes

Configuration file

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Stato UG

• UGPS FM installati

• UG-QM1 utilizzata sistematicamente per i test del TRD

• Software UG usato per QM1 e per i test funzionali del QM2

• UG- QM2 test funzionali OK

• Qualifica ESS e TVT del UG-QM2 inziata al SERMS il 13 Febbraio e

terminata il 29 Febbraio con successo

• 4 Marzo: UG-QM2 al CERN per test funzionali con circuito di gas

• 12 Marzo: UG-QM2 a Roma in attesa del UGPD

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UG-QM2

• 14 Marzo: UGPD-QM arrivato a Roma

• 18 Marzo: test funzionale UG-QM2+UGPD-QM ok

• 25 Marzo: inizio test EMC UG-QM2+UGPD-QM

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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 FM 2 weeks delay

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UG-electronics schedule / FM

04/04/08 FM boards delivered by G&AStart acceptance tests @ SERMS

21/04/08 end of FM boards acceptance tests

+ 2 settimane di ritardo