CALO DCS upgrade A. Konoplyannikov, M. Soldatov, A. Ostankov, Yu. Guz (IHEP, Protvino) V. Kudryavtsev (BINP, Novosibirsk)

The High Voltage, Monitoring and Control systems of the Hadronic and Electromagnetic calorimeters are essentially slow control based, and therefore are independent on data taking and can be kept for upgrade. The components of the present CALO DCS based on SPECS bus:  HV-LED boards;  integrator readout boards (INTEG) (readout of HCAL PMT anode currents);  LEDTSB boards. Should be changed to a GBT-based protocol. CALO DCS There are other types of boards, which are controlled and powered by the control boards and not communicate with DCS (will not be discussed here):  CW bases (+PMTs);  HCAL integrator frontend boards;  LED driver boards;  PIN modules. The system of the 137 Cs source motion control communicates via CANbus  will be able to work as is. However an upgrade is under discussion.

Each HV-LED, INTEG and LEDTSB board is equipped with a SPECS slave mezzanine. The SPECS slave mezzanine provides, in particular, the following functionality: One long distance point to point differential SPECS interface (coming from the SPECS master) One unipolar SPECS local interface for multi-load bus applications One local and one long distance I2C bus (LEDTSB) One JTAG bus One parallel bus: 16 bit data + 8 address (HV-LED, INTEG, LEDTSB) One decoder for the channel B of the TTCrx One DCU chip with 12 bit resolution (HV-LED, INTEG) ECS (GBT) For upgrade ECS, one can use the GBT-SCA circuit, which provides similar (and richer) functionality: 2 e-ports 32 ch GPIO (parallel bus) 16 I2C masters SPI JTAG 4 ch DAC 31 ch ADC + 1 ch temperature measurement The baseline: a SCA mezzanine with the same form factor and functionality as the SPECS mezzanines SPECS slave uses +5V and +3.3 V GBT-SCA periphery: max 2.5V Low power consumption, DC-DC will not be necessary, LHC 4913 will be ok

Each of the HV-LED, INTEG and LEDTSB have a SPECS and Control mezzanines (HV-LED is shown as an example). Upgrade DCS SPECS slave mezzanine To be replaced by a GBT-SCA based interface control mezzanine same for HV-LED, INTEG and LEDTSB, but with different f/w (Anatoli) Will be upgraded: replaced by a board based on Microsemi IGLOO2. The design is ready (Anatoli, next slide). In addition to the possibility of developing more sophisticated firmware, it also will serve as an interface between the GBT- SCA (2.5 V logic) and the rest of the board (3.3 V logic).

First phase includes replacement of the old control mezzanines (based on ProAsicPlus) to new ones designed with IGLOO2 FPGAs. There are three types of the electronic systems to be upgraded:  ECAL and HCAL HV control and monitoring system – 42 boards;  ECAL and HCAL LED monitoring system – 10 boards;  HCAL Cs calibration/monitoring system – 4 boards.  + spares: total of 70 boards Status of Prototypes Design:  New mezzanine board based on Microsemi M2GL010-1FGG484 FPGA was developed;  PCB for HV and Cs calibration system has been designed;  Two prototype boards are ordered;  Components are purchased;  The prototype boards will be ready at the end October – middle November;  Firmware for the HV system FPGA has been redesigned and in simulation stage now.  The first prototypes are under production, to be tested with existing slow control boards + SPECS this year LHCb calorimeter upgrade meeting 2/10/2015 A. Konoplyannikov Upgrade DCS – control mezzanine (Anatoli)

CALO DCS – HV-LED and INTEG boards For the standalone HV-LED and INTEG boards, we will need to foresee fanout boards based on GBTX, which ensure communication of one DCS computer to several control boards. These fanout boards will be standalone, and mounted nearby the HV-LED & INTEG boards. Necessary number of power lines should be foreseen. The e-link maximum length is expected to be 1 m. This means: HCAL: 4 fanout boards (one in each corner, i.e 2 at the platform and 2 at the chariot), each serving 2 HV-LED and 1 INTEG board ECAL: total of 3 or 4 per side (6 or 8 total) will be needed, all placed on the chariot.

The LEDTSB boards will use the infrastructure of the FEB crates where they are installed. In particular, they can use slow control lines of the crate. CALO DCS – LEDTSB boards The LEDTSB boards will have to be modified: SPECS  e-link, different connectors at the backplane +5 and -5V will be needed for the calibration (this is the procedure which will be done at the beginning of operation). As we will not have ±5V lines in future crates, we can arrange powering during the calibration, e.g., using a laboratory power supply.

Inventory HV-LEDINTEGLEDTSB ECAL34-8 HCAL842 Total of 56 SPECS slave mezzanines  GBT-SCA based Total of 56 control mezzanines  new IGLOO2 based ones Total of 10 or 12 “fanout” boards (4 ECAL, 6 or 8 HCAL) + spares We will need a test bench: a server with PCIe40 May be also used for the final system