Link Board project status Pigi Paolucci Luigi Parascandolo

Link Board project status Pigi Paolucci Luigi Parascandolo Nicola Cavallo Antonio Vanzanella

RPC electronic schema 07/09/2021 Pigi - I. N. F. N. of Napoli 2

Where we are now (July) • 30/05/2011 - New link board and control board design ready – LV Regulator LHC 4913 tested and now on board – About 9 man/month to study, design and procure the components for the two prototypes – It was hard to get the final LB CAD version • 28/06/2011 – PCB produced (2 LB +2 CB) • May-June – all components ordered • End of July – 1+1 board mounted 07/09/2021 Pigi - I. N. F. N. of Napoli 3

Prototypes ready to be tested 07/09/2021 Pigi - I. N. F. N. of Napoli 4

LV regulator LHC 4913 results With heat-sink it works at 60 o. C Test Conditions Vin=6 V; Vout=3. 3 V; Iout=2. 6 A; Tamb=25°C Vin=5 V; Vout=3. 3 V Iout 1=1. 4 A (Load=2. 3 W//2200 u. F) Spike=5 V / Vin=10 V Spike su Vout > 10 m. V 07/09/2021 Pigi - I. N. F. N. of Napoli 5

Budget estimation 07/09/2021 Pigi - I. N. F. N. of Napoli 6

Prototype expenditures - 2011 • 08/06/2011 Avnet Emg Italy S. r. l. • 08/06/2011 CU_PLUS technology Co. • 11/05/2011 SILICA – AVNET • 10/05/2011 Rs Components • 10/05/2011 Mouser Electronics Inc • 10/05/2011 Digi-key Corporation • 10/05/2011 Farnell Italia S. r. l. • 10/05/2011 Distrelec Italia S. r. l. • 01/06/2011 Components TOTAL components cost • PCB production (2+2) Zener S. r. l. 07/09/2021 Pigi - I. N. F. N. of Napoli 1. 273, 20 1. 150, 00 215, 52 366, 02 39, 08 903, 90 563, 68 10, 80 8. 250, 00 12. 142 euro 7. 920 IVA included 7

Budget status Cost estimation done with CHF/€ = 1. 3 • 2010 - 40 K€ assigned – 12 K€ prototype components (done) – 8 K€ prototype PCB, mounting and test (done) – Prototypes and extra cost of obsolete components increase budget estimation – 12+10 K€ – we will try to recover from the final production ! – 10 K€ test station at 904 (5 K€ more in the 2012) – 5 K€ procurement of obsolete components (not enough) • 2011 - 160 K€ - tender and production • 2012 – 90 K€ - power system and installation IVA paid only for prototypes and obsolete components 07/09/2021 Pigi - I. N. F. N. of Napoli 8

Obsolete components • • AM 29 LV 160 DB-120 EC XC 3 S 1000 -5 FG 456 C Actel APA 450 Fiber connectors have 5 4 0 4 needed 460 430 30 430 cost 4€ 50€ 10€ • We need to buy most of the obsolete components this year but we don’t have enough budget to do this. • Total cost = 30 K€ 07/09/2021 Pigi - I. N. F. N. of Napoli 9

Schedule • We are on schedule but • 1 month of delay - test stand at CERN and prototype test at CERN • A delay could be introduced by the preparation of the final tender that could takes longer (new bureaucracy in Italy) 07/09/2021 Pigi - I. N. F. N. of Napoli 10

Conclusions • Link board and control board prototypes ready to be tested at CERN. • Test will be performed in Sept and Oct. • Test at CERN is now crucial and we need help from experts (Warsaw group). • Budget is almost under control but cost of the prototypes and extra cost of obsolete components increase budget estimation of about 12+10 K€ – we will try to recover from the final production ! • We are on schedule, a possible delay could come from the tender. 07/09/2021 Pigi - I. N. F. N. of Napoli 11