Mauro Citterio - Mi meeting PP2 Boxes Mauro Citterio on behalf of INFN Milano 5/14/2012 Mauro Citterio - Mi meeting

Mauro Citterio - Mi meeting A modified PP2 assembly PP2 Assembly The number of slots for the LV boards have been reduced to 9  7 slot for IBL (4 channels, 2 LDOs each)  1 slot for DBM  1 slot for VVDC powering (8 channels) Plus 1 slot for the controller board On top of the LV crate, there is now the patch box for HV and DCS (Tmod and ENV) cables routing. IMPORTANT: two PP2 assemblies needed for detector side !!!  The two assemblies will be side by side Simpler and shorter HV and DCS cable routing Small increase in volume Inspection in the cavern is done in February ….. Some concern on space It could be advisable to “match” standard PP2 width for easy installation 5/14/2012 Mauro Citterio - Mi meeting

Mauro Citterio - Mi meeting PP2 Location Position in which the IBL PP2 box will be installed(Sector 13, platform 5-6) NSQP interference …. One Standard PP2 Box in the same location From the IBL PP2 box, VVDC cables are reaching the IBL-OptoBox 5/14/2012 Mauro Citterio - Mi meeting

Advantages with the new design (1 of 2) Type II cable termination at PP2 Type II side 5/14/2012 Mauro Citterio - Mi meeting

Type II cable prototype The “Axotress” braid, that surround the loose Type II bundle power cable need to be “terminated” or “extended” at the octopus cables. From the picture the braid is “extended” to the LV cables of the octopus. Moreover, does the High Voltage cable really has a separate Braid Shield and Drain Wire, as shown in the bundle drawings? How they are handled? 5/14/2012 Mauro Citterio - Mi meeting

Advantages with the new design All boards (except controller) of the PP2 assembly will be built around the 8 LDO regulator concept The design stay the same (motherboard + daughter board) New layout of the motherboard with only 8 LDO and less drop on the board achieved by larger copper traces and by doubling the pins used on the output connector Overall board length can be decreased if necessary (and PP2 depth decreases accordingly) Choice of single or double LDO usage per channel, defined by INPUT and BACKPLANE routing - layout the same for all boards - no different spare types More symmetrical behavior of LDOs during current sharing Layout is still on going ….. Following this “new” concept Goal is to complete GERBER by end of May  Controller boards identical to the Pixel ones (already in production) 8 LDOs not mounted anymore Single LDO usage for VVDC powering Two LDOs in parallel on a same channel. Each LDO limited to ~ 50% of IMAX, for FEI4 powering 5/14/2012 Controller Board Mauro Citterio - Mi meeting

Advantages with the new design 8 LDOs not mounted anymore Single LDO usage for VVDC powering Two LDOs in parallel on a same channel. Each LDO limited to ~ 50% of IMAX, for FEI4 powering 5/14/2012 Mauro Citterio - Mi meeting

LV connector PIN definition (1 of 2) 5/14/2012 Mauro Citterio - Mi meeting

MATING FACE OF FEMALE CONNECTOR OR REAR FACE OF MALE CONNECTOR GMCT 34 Insulator shown The colored circles indicate the positions in which the contacts will be installed NO contacts installed in the white circles Male contact part number for AWG 12 is either: Crimp type: MC112NS or Solder type: MS112NS The last letter “S” indicates the High Conductivity version of the contact. Note: for AWG 22, 26, 28 wire AXON could use standard contacts: AWG 22  MC120NS AWG 26/28  MC124NS Legenda: DRAIN: AWG 26 VDD: AWG 12 VDD Sense: AWG 28 VDD_Return Sense: AWG 22 VDD_Return: AWG 12 Pin Signal B Drain C VDD1 E VDD1 Sense J VDD1_Return Sense L VDD1_Return M VDD2  P VDD2 Sense T VDD2_Return Sense V VDD2_Return W VDD3 Y VDD3 Sense b VDD3_Return Sense d VDD3_Return f VDD4  h VDD4 Sense k VDD4_Return Sense n VDD4_Return

Work in progress on the PP2 INPUT side 2 conn per DCS + 1 con for HV, repeated 8 times, only a 3D model up to now !!!! Aux power, for controller LV input Type III input, V34 conn. Only few pins will be used per conn. [(4x2) + grounding, shielding and redundancy] 8 D-type VVDC + CAN interface PP2 NTC, D type All mechanical LV PP2 drawings and schematics are almost ready. Not yet finalized the HV/DCS patch box: mostly is choice of connectors. - for example for the HV cable: in Type 3, the high voltage connector is a female Redel 51 pins on the power supply side. (ref Cern scem nr. 09.41.34.C), if space is allowed we should use the same also at PP2. - same argument for TMOD and ENV type III cables …. Lost track of what connector is what  Susanne please help 5/14/2012 Mauro Citterio - Mi meeting

Work in progress on the PP2 INPUT side (2 of 2) All the mechanical and electrical aspect of the interface between INPUT and BACKPLANE is going to be reviewed in the coming weeks. We agreed upon: - connector choice towards type III cables (VVDC LV, HV, DCS) - pins assignment - services duplication (CAN + Auxiliary Power) and “wire bundles” From T0 then ~ 6-7 weeks to have Input Board in hands 5/14/2012 Mauro Citterio - Mi meeting

Mauro Citterio - Mi meeting Conclusions The main topic of the talk was to review the “boundary” conditions still to be addressed to finalize PP2 production We have to produce, test and delivery ~60 regulator boards 12 VVDC boards 12 backplane 12 Input Board 10 Mechanical assemblies The BACKPLANE and INPUT schematics need only to be polished. Layout is being on hold for some time but I am confident we could now move forward in the next couple of weeks. Based on the experience gained in the past, this “heavy copper” boards are not too complicated for industry, so a typical 4 week delivery time + 2 for assembly is reasonable Controller board has been produced (April 2012) Regulator board layout: the 8 LDOs concept has requests some new thoughts. We are working on the layout In parallel we have been acquiring components with “long lead time” or “minimum quantity” constraints to avoid surprises. Time for test and validation of production will also be critical especially because we will be testing more than one object at the same time with limited manpower Realistically, the first IBL pieces will be ready by beginning of september, but not before. 5/14/2012 Mauro Citterio - Mi meeting