Progress of GEM R&D in Lanzhou Univerity Yi Zhang

Time properties of GEM-detector signal R&D of GEM detector Contents Time properties of GEM-detector signal R&D of GEM detector R&D of GEM-Daq Future plan Aug. 11, 2016 Prog. of GEM R&D in LZU

Time properties of MPGD signals Fast raising time Signal duration depends on the way of energy deposition Particle identification by cut on time The maximum duration is independent of incidental energy Correct the initial position Aug. 11, 2016 Prog. of GEM R&D in LZU

try to reduce the load of DAQ by clustering on hardware level (FPGA) Goal reduce the local rates by rejecting γ signals according to the time information try to reduce the load of DAQ by clustering on hardware level (FPGA) Aug. 11, 2016 Prog. of GEM R&D in LZU

To demonstrate the conclusions, a test was done Mean=89.4ns σ= 1.744 Mean=135.7ns σ= 22.8 SP-ADQ412: 1.8GHz Aug. 11, 2016 Prog. of GEM R&D in LZU

Garfield++ simulation of the double GEM + Mesh Garfield++ simulation of the double GEM (reference) Edrift=1kV/cm EGem=58.33kV/cm gain=9032 Garfield++ simulation of the double GEM + Mesh Edrift=1kV/cm EGem=58.33kV/cm Eamp=40kV/cm gain=68930 Aug. 11, 2016 Prog. of GEM R&D in LZU

R&D of GEM detector Aug. 11, 2016 Prog. of GEM R&D in LZU

New readout panel To APV25 167 channels in 10 cm PANASONIC 130P Aug. 11, 2016 Prog. of GEM R&D in LZU

New version of triple-layer GEM detector Aug. 11, 2016 Prog. of GEM R&D in LZU

High voltage and trigger MPD+V1218 HV drift electrode 5M 10M 6KV 103M 10M CF8000 discriminator }GEM I }GEM II }GEM III 6KV 103M 15M Trigger Aug. 11, 2016 Prog. of GEM R&D in LZU

Test result of new detector (55Fe) σ~127um σE~19.5% σ~127um Aug. 11, 2016 Prog. of GEM R&D in LZU

x-ray imaging by new detector and Daq 10 cm detector & daq system Aug. 11, 2016 Prog. of GEM R&D in LZU

R&D of GEM-Daq Aug. 11, 2016 Prog. of GEM R&D in LZU

coincidence trigger to identify muon and photon Aug. 11, 2016 Prog. of GEM R&D in LZU

Real signals recorded in Daq 55Fe cosmic μ- Aug. 11, 2016 Prog. of GEM R&D in LZU

comparing signal amplitudes of different particle x-ray in 1 period x-ray in mutil period muon in 1 period muon in mutil period Aug. 11, 2016 Prog. of GEM R&D in LZU

Avalanche electrons collected on by detector (simulation) Aug. 11, 2016 Prog. of GEM R&D in LZU

Steps of online track reconstruction Divide signals into time slices (1 period for each) Segmentation in readout plane —— cut on signal amplitude Combine adjacent segment —— identify clusters of hits Process multi time slices Combine adjacent time slices —— distinguish if signal continues Integrate multi time slices —— identify the start and end of a signal Aug. 11, 2016 Prog. of GEM R&D in LZU

Forming hit clusters in one time slice (simulation) Aug. 11, 2016 Prog. of GEM R&D in LZU

Development board: ARRIA GX FPGA toolkit EP1AGX60DF780C6N Aug. 11, 2016 Prog. of GEM R&D in LZU

Forming hit clusters in 1 time slice fake data test (27×27 chns) Aug. 11, 2016 Prog. of GEM R&D in LZU

Processing speed VS signal coverage ratio Used FPGA periods Ratio of fired channels in 1 period (%) Aug. 11, 2016 Prog. of GEM R&D in LZU

Resources consumption budget (2048 chs) from INFN : reports of our code: Iterms of resources Total Usage of current daq Usage of out code Combinational ALUTs 48,080 21,247 (44%) 14,092 (29%) Dedicated registers 13,382 (28%) 32,224 (67%) DSP 256 3(1%) Block Memory Bits 2,528,640 1,808,252 (72%) 73,216 (3%) Aug. 11, 2016 Prog. of GEM R&D in LZU

Combine few time slices, get the complete tracks (simulation) Aug. 11, 2016 Prog. of GEM R&D in LZU

Identify the tracks (simulation) Aug. 11, 2016 Prog. of GEM R&D in LZU

Try to identify signals of different particle (data) period2/period1 period3/period1 period3/period2 Aug. 11, 2016 Prog. of GEM R&D in LZU

γ background in SoLID GEM 5 kHz/mm2 from SoLID PreCDR Aug. 11, 2016 Prog. of GEM R&D in LZU

primary electron-ion couples in triple GEM Aug. 11, 2016 Prog. of GEM R&D in LZU

Signals induced by 1 track FEE rising time (22ns) included Aug. 11, 2016 Prog. of GEM R&D in LZU

process multi time slices on FPGA test with real beam data? Future plan process multi time slices on FPGA test with real beam data? communicate with INFN experts try to merge our code into current firmware Aug. 11, 2016 Prog. of GEM R&D in LZU

Thank you !

Aug. 11, 2016 Prog. of GEM R&D in LZU