1. RENO Electronics - QBEE - 장 지 승 ( 전남대학교 ) RENO Collaboration Meeting, 2008.10.10.

2. Contents 1.QBEE 의 소개와 성능 2.DAQ 구성 - Master Clock 소개 - Online computer setup 3. 진행상황과 계획

3. QBEE - QTC Based Electronics with Ethernet - Super-Kamiokande 를 위해 동경대의 ICRR 에서 개발 개발목표 1.Stable DAQ system for next 10~20 years ATM (Analog Timing Module from KEK) was used for long time 2. Better data quality 1) Reflection signal and Temperature dependence A dead time for mu-decay detection (~us interval events) 2) Charge dynamic range and Energy resolution lower energy(~3MeV) solar neutrinos to multi-GeV or higher energy neutrinos 3. Recording every hit of PMT Anti-neutrino events for supernova relic neutrino search by detecting 200us delayed signal 4.High speed signal processing Nearby galactic supernova burst events Dead time free !! High sensitivity !! High speed !!

4. Overview of QBEE 12 PMTs ….…. ….…. 8QTC (Charge to Time converter) 4TDC (Time to Digital Converter) Power supply DC RJ45 Computer Master Clock 60MHz clock TDC reset TRG ID Event# 100Mbps Ethernet card FPGA

5. Hit timing Charge TDC (ATLAS Muon TDC) - Digitizes the each edge time FPGA (DSM, SIC etc) - Calculates the digitized hit timing and integrated charge QTC

6. Built-in Calibration pulser & Temperature sensor

7. Specification of QBEE based on IWATSU manual 1. The number of the ch. : 24ch 2. Charge dynamic range : 0.2-2500pC (1250 p.e.), 3 gain range (Small ~51pC, Medium 51~357pC, Large 357~2500pC 3. Charge Linearity : +/- 1%

8. 4. Charge resolution: ~0.1pC(.05p.e.), Timing resolution: ~0.15nsec 5. Temperature dependence (per degree) Gain variation : 0.4% Pedestal variation : less than 0.15pC Charge accuracy after pedestal subtraction : less than 0.15% Timing variation : less than 0.02nsec

9. 6. Processing speed : 900ns/hit 7. Discriminator : 0 ~ -1.7mV, 0~3.4mV, 0.-11.9mV 8. Noise level : Noise hit rate < 10Hz @ -0.3mV DSC 9. Cross talk hit : less than 1/1000 between ch. @-0.6mV DSC PMTsignal -0.3mV

10. 10. Reflection coefficient : less than 1/1000 (-60dB) @ 20inch PMT and 70m coaxial cable 11. FIFO memory size : 1.5MB 12. Power consumption (Maximum) +5.2V/1.6A, -5.4V/0.7A, +8/0.81A, -8V/0.3A, +15V/0.1A(DB) less than 24W

11. DAQ 구성 Master Clock Module TRG module Sync. Out Distributer RENO requirement – 18 QBEEs per 1 detector @ SuperK Computer Flat cable 60KHz Serial signal ( TRG ID & Event # etc. ) 60MHz clock TRG ID, event# QBEE output 100Mbps 100Mbps

12. MCLK output specification  Output via 100Mbps Ethernet cable (1,2) pair : 60 MHz clock (5,6) pair : TDC reset + Trigger ID + 32 bit event # (3,4) and (7,8) pairs : not used  Spec. of serial signal [ 1 bit = 1 clock, total 38 clocks = 633 nsec ] Header (always 1) Trigger on/off + TDC reset on/off Trigger w/o TDC reset(10) Trigger w/ TDC reset(11) TDC reset only (No Trigger)(01) Trigger (Narrow/Wide + Pedestal + Split) 32 bit event # 60 MHz clock Serial signal Start at a negative edge of the clock

13. 110 100 00000000000000100110110000011001 60KHz Serialized signal 633nsec 60MHz clock Example of Master Clock Output Header (always 1) Trigger on/off + TDC reset on/off Trigger (Narrow/Wide + Pedestal + Split) 32 bit event # Serial signal

14. Storage 100Mbps/QBEE x 18 LAN SWITCH SISCO SYSTEM Catalyst 2960G Series 1Gbps x 3 …… Computer Fujitsu PGR10317L-D QBEE 24 PMTs LAN SWITCH Computer. Merger Software trig. Computer VME- TRG Module collector sender Bit3 1Gbps(?) collector sorter sender Computer Data flow manager Computer Organizer Online computer setup with QBEE based on SuperK online system Master Clock Module Distributor Flat cable Sync. Out …… 18 output Each computer has 4 core  is Ethernet cable Front End Computer

15. 24PMTs QBEE Fast Ethernet 18 QBEEs QBEE Sender Collector Sorter Front end computer 1.5MB/sec/QBEE 27MB/sec Merger Schematic view of data flow in front end computer based on SuperK online system  Software for this process was provided by Iwatsu and SuperK online group.

16. Storage 100Mbps/QBEE x 18 LAN SWITCH SISCO SYSTEM Catalyst 2960G Series 1Gbps x 3 …… Computer Fujitsu PGR10317L-D QBEE 24 PMTs LAN SWITCH Computer. Merger Software trig. Computer VME- TRG Module collector sender Bit3 1Gbps(?) collector sorter sender Computer Data flow manager Computer Organizer Online computer setup with QBEE Master Clock Module Distributor Flat cable Sync. Out …… 18 output Each computer has 4 core  is Ethernet cable Front End Computer

17. Data from the front-end PC Merger Combine the data from each FEPC by using the HW trigger number. The software trigger system 123456789 HW trig. no. 123456 Event no. The Merger system #of events

18. MCLK & Distributor Power Supply for TKO LAN switch 18 QBEEs in TKO FAN VME w/ TRG Electronics setup for 1 detector 6 PC 10 HV splitter FAN PMT HV supply NIM

19. 개수구입처진행상황 QBEE50IWATSU 전량 서울대 도착 Ethernet card50Boston Univ. 5 개 -11 월 초 SuperK 에서 나머지 - 차후 보스톤에서 Master Clock4IWATSU 10 월 말 도착예정 TRG Module4IWATSU 10 월 말 도착예정 Distributer4IWATSU 10 월 말 도착예정 TKO crate6KEK REPIC ( 수리 ) 3 개 수리요청, 수리 후 도착예정 부족분은 KEK 에 문의중 TKO power supply 4KEK 전량 확보, 수리 문의중 Pulse Gen. FI/FO – 24ch. 11 월 중 QBEE test 시작을 목표로 하고 있음 진행상황과 계획