B.Borgia 26/3/20081 Stato elettronica UG controllo TRD 26 Marzo 2008 A.Bartoloni, B.Borgia, F.Spada

B.Borgia 26/3/20082 UG-electronics in the TRD Gas System

B.Borgia 26/3/20083 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

B.Borgia 26/3/20084 EM  QM 1.Change power supply: 24V  30V (supply for Kulite, Marotta valves, pumps, heaters) 2.Pumps power supply: 12V directly from DC-DC converter, 24V with step-down circuit 30V  24V. 3.Heaters x CO 2, 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 link QM FUNCTIONALITY TEST: JULY 2006

B.Borgia 26/3/20085 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.

B.Borgia 26/3/20086 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 1.replace the TPSxxxx regulators with SEL free LP2989 (UGBS, UGBC, UGFV) 2.put limiting resistor on Kulites and GP50 power supply lines (UGBS, UGBC) 3.separate 12V power supply for UGPS and flipper valve (UGFV) 4.introduce LP2953 regulator to generate 24V for pumps high speed (UGBP) 5.introduce LP2953 regulator to generate 21V for analog mux (UGBP) 6.eliminate 3.3V DC-DC converter; generate 3.3V from 5V on backplane 7.introduce Solid State Fuses (SSF) for short circuit protection on 5V, on each module 8.introduce pull-down resistors on Mosfet gates 9.introduce differential amplifier on Kulite inputs 10.eliminate UHVG (redesign of backplane) 11.eliminate 2 UGFV and reduce 8 multiple channels to 4 (redesign of pcb)

B.Borgia 26/3/20087 UG-electronics test set-up UG CRATE TV CHAMBER EPPCAN BUS POWER SUPPLIES A POWER SUPPLIES B 29V 12V 5V GAS SYSTEM SIMULATOR ADC/DAC NATIONAL INSTRUMENT TEST STATION

B.Borgia 26/3/20088 Test set up

B.Borgia 26/3/20089

10 Vibration test

B.Borgia 26/3/ TVT

B.Borgia 26/3/ Qualification test command list Time needed to perform all commands: 15 minutes Configuration file

B.Borgia 26/3/ 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

B.Borgia 26/3/ 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

B.Borgia 26/3/ UG-electronics schedule / QM2 21/01/08QM2 boards ready functional tests 11/02/08  13/02ready 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 25/03/08start EMC test 27/03/08end EMC test Go ahead FM2 weeks delay

B.Borgia 26/3/ UG-electronics schedule / FM 04/04/08FM boards delivered by G&A Start acceptance SERMS 21/04/08end of FM boards acceptance tests + 2 settimane di ritardo