Overview of Electronics Maintenance and Pre-Processing Hardware at Agata Project - October 2016

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The Agata Project in October 2016 involved maintenance and hardware updates on electronics components. It covered pre-processing electronics, hardware, and firmware maintenance, focusing on fuse sockets, bad contacts, and voltage supply issues. The project also included a mission report on installation and troubleshooting at GANIL. Challenges were faced during the process, including difficulties with fuse soldering and electronic channel setup.

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PRE-PROCESSING ELECTRONICS MAINTENANCE HARDWARE - FIRMWARE Agata Project Agata Week Octobre 2016 X. Lafay/N. Karkour / D. Linget

Segment board status V2.21 (hardware and firmware) 181 installed cards @ Ganil 29 Core board status V2.1r2 (hardware and firmware) never installed Total 210 cards Carrier board V3 (IPNO) V4 (CSNSM) CSNSM Production : 24 cards 22 are Installed @ GANIL IPNO production : 33 cards 24 cards: Installed @ GANIL Total : 46 cards N. Karkour AGATA week Orsay 4to6Oct2016 2

PreProcessing Hardware 2015 Finally some news : Fuse sockets reliability decreases with time. Bad contacts are formed and/or oxidation . Fuse series resistors increases, Final Voltage supply decreases.. Patch (known since 2008) : solder fuses directly to pcb. Made on preproduction @ Padoue not transmitted to V3 IPNO nor V4 CSNSM ALL carriers V3 et V4 concerned. few cards modified OK 10 fuses per carrier (total of 480 fuses were unsoldered and resoldered back) 48 cards modified, Trip to GANIL in 2016 N. Karkour AGATA week Orsay 4to6Oct2016 3

Rapport Mission of CSNSM and IPNO @ GANIL on January 25th 2016. Arrival at GANIL Monday 1 February at 14:30, Installation at 15:30. Short meeting with Caterina for how we will proceed. 2 people from each lab only 1 from IPNO stayed for 2 days instead of 5 days initially. The cards were unplugged properly fibers and numbering the locations. Leave at 18:00 because of emergency state . Note: IPNO technician must go on Tuesday evening. The procedure: remove cards and make the change fuses at once. Tuesday is dedicated to making fuses for V3 and Laurent helped IPNO. FrontPanels and the light guides were mounted. Pic Voltages were adjusted. Wednesday morning everything was reconnected back (fibers, digitizers, and network) After a general restart 2 V3 cards had power alert. It was removed the crate, one had a fuse holder in the power connector for ATCA, the other had a drop of solder. Thursday morning all the cards responded to ping. It was good BUT, The reset was complicated, carrier cards referred hardware error messages . Some mezzanines were not quite well plugged on connectors (rush to finish on Tuesday before IPNO technician left). Laurent took over some fuse soldering on some V3 cards It was quite nervous when the system is powered on and one card left, we managed to make the system working but the procedure was too long. Then we lost a carrier V3: the 3.3 power. We tried to fix it but without success, Another card was replaced by a V4 and all FPGAs were reprogrammed. Finally, Thursday night we still had not managed to get a full setup of 24 electronic channels. Reboot of the anodes for the lincos but unsuccessful. Left on Friday the system partially tested TBContinued with Catarina on Monday. Conclusion Patch done but reboot was not easy and few cards were broken N. Karkour AGATA week Orsay 4to6Oct2016 4

PreProcessing History of Maintenance Carriers V3 Carriers V4 18 et 24 le 25/06/2015 59 et 62 le 20/04/2015 19 et 38 le 24/02/2016 59 et 62 le 04/05/2015 39 le 04/03/2016 59 le 20/05/2015 29 et 30 le 16/03/2016 58 et 67 le 04/06/2015 53 et 57 le 01/10/2015 56 le 24/02/2016 N. Karkour AGATA week Orsay 4to6Oct2016 5

Preprocessing conclusion Lot of time consuming even few cards can take enormous time. Some rreasons : Orsay test bench quality deteriorates. Digitiser synchronisation problems. Hectic pulser to generate 36 signals. Old pizza boxes for DAQ fails very often. Servers and programs fail to connect to Hardware. Every power up procedure can take from 5 minutes to 1 day or never. Manpower problems to spend to repair test bench and to look after the cards. N. Karkour AGATA week Orsay 4to6Oct2016 6