PXD Cosmic Test Status at Tabuk Rachid Ayad, University of Tabuk 1 Introduction and Objectives 2 Overall SETUP 3 Slow Control 4 Alibava Trackers 5 EMCM 6 Trigger and Trigger Logic Unit (TLU) 7 Conclusion and Outlook ASD2015, Tabuk, March 2015 Rachid Ayad 1
Introduction and Objectives 1 Determine the pedestals and noise characteristics (individual pixel noise and common mode) of the PXD modules. 2 Study the detection properties of the PXD modules using real tracks such as: efficiency, cluster size and shape, signal height, and gain. 3 Study the uniformity of those properties across the module. 4 Study stability of those properties as function of time. 5 Study the dependence on environmental parameter (temperature, humidity). 6 Optimize the operation parameters to obtain the best overall performance. 2 is the main objective: - 1 is needed by 2 for a good operation - 3 to 5 need time to achieve them. As planned we will run for a good period of one year before we will be busy with KEK installation and commissioning including KEK cosmic test - 6 needs all issues 1-5 and it will be to conclude of the cosmic test. ASD2015, Tabuk, March 2015 Rachid Ayad 2
The Belle II detector at SuperKEB accelerator 7.4 m e- Anti-B e+ 7.1 m VerteX Detector (VXD) B - 4 layers Silcon Detector - 2 PXD layers Figure 1: The Belle II Detector The e+e- collision creates a pair of particle s: Particle B-meson (matter) and a particle anti-B (Anti-matter), and detected in Belle II. The VXD is deigned to reconstruct the position where th particle is created (primary vertex) and where the particle decays (secondary vertex). The particle lifetime is then estimated. So Belle found that anti-matter (anti-B particle) is faster to decay than matter (B particle). This explains that anti-matter disappeared from the universe after the Big Bang. ASD2015, Tabuk, March 2015 Rachid Ayad 3
Cosmic Test with Full VXD at KEK I First Let’s explain the layout of the Belle II PiXel Detector (PXD) Tracking PXD with SVD PXD Silicon Vertex Detector (SVD) Radius Ladders Pixel 1 Pixel 2 Layer 1 1.4 cm 8 250x256 (50µm x 55µm) 250 x 512 (50µm x 60µm) Layer 2 2.2 cm 12 250x256 (50µm x 70µm) 250 x 512 (50µm x 85µm) PXD + SVD = VerteX Detector (VXD) used to reconstruct primary and secondary Vertices of the B-mesons therefor we can measures their leftime with momentum Measured by the Central Drift Chamber and VXD. We need to compare B lifetime and Anti-B lifetime. ASD2015, Tabuk, March 2015 Rachid Ayad 4
Basic layout Trigger Scintillators to custom made + Trigger Unit Hamamatsu PMTs EMCM or to DHH PXD module to Alibava MotherBoard Alibava Systems Microstrip Detectors 5
Slow Control Frame(5 shelves: EMCM, Trackers, and Shelves for readout electronics Rack Trigger) SETUP Chiller for EMCM 1 Right: PC monitors on table for Slow Control and PXD DAQ 2 Left: Big screen with wireless Keyboard and mouse The frame is made of Scintillator (Top) Aluminum and hold inside a wood box with door against Alibava Tracker 1 dust. A removable fiberglass EMCM now, PXD module later Plate (here left) can be machined to hold detectors. Alibava Tracker 2 An opening is drilled for muon Scintillator (Bottom) track or other sources tests. 6 FRAME ASD2015, Tabuk, March 2015 Rachid Ayad
Zoom on the frame ALIBAVA Tracker Two infiniband cables EMCM piece Patch Panel Cable Cable from breakout board (Slow Control) The EMCM removable plate had been extended with and additional Removable plate to hold patch panel and breakout board cable ASD2015, Tabuk, March 2015 Rachid Ayad 7
Slow Control Voltages to be set SC SETUP All items in the Rack including the PC ASD2015, Tabuk, March 2015 Rachid Ayad 8 SC program works fine and stable
Cooling the EMCM Chiller Working well and tested with a Temperature reaches set temperature, continuous Heat source From ambient temperature in about 4-5 minutes emperature 29 27 25 23 21 19 17 15 13 0 5 10 15 Time(mn) Tubing from chiller to EMCM is set. ASD2015, Tabuk, March 2015 Rachid Ayad 9
Alibava Tracker Zoom: An Alibava detector plane On its shelf Two Alibava Detectors (2D 1x1cm 2 ) Upstream And downstream the EMCM Scintillator (Top) Alibava Tracker 1 EMCM now, PXD module later Alibava Tracker 2 Scintillator (Bottom) Detector PCB plane PC We can download pedestals and noise for 256 Channels (two (128 ch) chips) Mother Board Good job by ALIBAVA. All is available with a Bench Test complete software with GUI. Now they are on a readout program for multiple boards. ASD2015, Tabuk, March 2015 Rachid Ayad 10
EMCM piece ALIBAVA Tracker Two infiniband cables EMCM piece Patch Panel Cable Cable from breakout board (Slow Control) Infiniband Ethernet Cables to cables from the DAQ PC EMCM piece PC with full installed DAQ is shipped from MPP. Two GUI tasks: - Slow Control and trigger - BONN-DAQ DHH board All working well. ASD2015, Tabuk, March 2015 Rachid Ayad 11
Trigger Scintillator (Top) Alibava Tracker 1 EMCM now, PXD module later Alibava Tracker 2 Scintillator (Bottom) A pair of scintillators made at MPP 1cmx10cmx0.4cm. Window entry Diameter 8mm PMT Input Output for DHH TLU: Many contacted but PMTs fromHAMAMATSU No success. Now looking ordered with 8mm To have one from KEK. diameter window. Output for Alibava ASD2015, Tabuk, March 2015 Rachid Ayad 12
VXD at KEK and Scintillators Design Scintillators VXD at its final design VXD R=32cm Frame Scintillator PMT ASD2015, Tabuk, March 2015 Rachid Ayad 13
Conclusion and Outlook 1 Setup fully done except PMTs and TLU 2 All online software run well 3 To operate the EMCM Hans asked that someone from Tabuk visit MPP to practice on running the system. Abdelouahab visited Munich and is currently testing the system. 4 It seems a triggering module similar to TLU exists at KEK. We are looking to order one. 5 HAMAMATSU PMT will be ready March 11 plus shipping. 6 We will start building the frame to hold the scintillators to test the PXD with full VXD at KEK. Our tracker will be SVD (instead of ALIBAVA tracker). We are starting working on Belle II offline software and agreed on the code to use. ASD2015, Tabuk, March 2015 Rachid Ayad 14
Backing Slides 15
Tabuk PXD Cosmic Test Bench Setup at Tabuk consisting of Slow Control, full tracking system: Status: What is available now Scintillators trigger, ALIBAVA tracker (silicon planes), and an EMCM from MPP at Tabuk Here: with cooling system. Slow Control : Need 6 power supplies, three received and 3 coming soon. PSs are fully controlled by the installed SL program. Banana Cables from PSs go to a breakout board, then to the EMCM piece via a hand made cable. EMCM and DHH also EMCM received from MPP and A PC with full installed DAQ. DHH Board ALIBAVA Tracker : 3 Detector planes (2D 1x1cm) and 3 mother boards, with tested software. em T(C o ) Set Point 15C Chiller Working well and tested 23 with a permanent Heat source 13 20 Time(mn) 0 10 Trigger : Two scintillators with light guide build Now we are building a frame to hold Trigger, Trackers, and EMCM at MPP and now at Tabuk. HAMAMATSU with 8mm piece: Now is waiting its turn in the machineshop. diameter window will arrive soon. Overall : All equipment available just missing two ethernet adapters 16 On the DHH board and two PMTs from HAMAMATSU.
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