1. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 1 Status of Aerogel Reconstruction –Track association implemented in CGL. –Raw data (ADC, TDC) included in PHCentralTrack. –Need to add some information of the adjacent 8 cells with track- associated cell in nanoDST, in order to take care of particle passing through multiple cells. Calibration –Gain parameters for ADC obtained from LED and real data. –Timing calibration will be done with MinBias nanoDSTs. Construction for Run 5 Aerogel Detector has been installed in PHENIX for Run 4. (North-side Half Sector) Updated

2. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 2 Kaons and protons still not seen clearly. - Track matching - RICH-veto - EMC energy cut ( >0.2GeV) Peak position (Npe) Npe vs. Momentum (62.4 GeV AuAu, Min-bias ~8M events)

3. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 3 0.0 – 0.8 0.8 – 1.2 1.2 – 1.6 1.6 – 2.0 2.0 － 2.4 2.4 – 2.8 2.8 – 3.2 Npe ~ 16 pe Npe distributions – Momentum slices [GeV/c] (62.4 GeV AuAu, Min-bias ~8M events)

4. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 4 Preparation of Integration (80 boxes with 160 PMTs) at 510-HighBay Construction of South-side Half Sector All parts, except for additional Aerogel itself, are now at BNL. - Aerogel tiles (~1080 tiles, n=1.0120) at BNL. - Aerogel tiles (~700 tiles, n=1.0112) will be delivered to BNL by mid-May. Construction procedure is reviewed with last year’s experiences. Box Mechanical Assembling has been started in April. It will take ~2 months. - 2-3 grad. students will come to BNL from Tsukuba. - Help of Dubna people (technicians). - Help of technicians (BNL). Completion of Assembly (Target: end of June) Install South-side Aerogel Racks Install South-side Aerogel Sector (Target: Aug/2) South-side half (Run 5-) North-side half (Run 4-)

5. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 5 - Making holes on PC-boards [80/80] - HV Isolation Treatment (PMT) – Kenny helps [90/160] - Inner Box Assembly [39/80] - Mechanical Pre-Assembly (Lid) [20/80] - Mechanical Box Assembly [0/80] - Light Shielding [0/80] - Load Boxes to Half-Sector Frame [0/80] - Build N2 distribution  Need Help - KERPEN-HV Cable Assembly [0/8]  Need Help - Gas Flow Test - HV, Signal (PMT->Preamp), LED Cables - Light Leak Check and Cure  Time-consuming ! - Testing of Signal - Transport to 1008 - Installation into W1 Sector - Preparation of FEM - Readout Test -- Major Things to do --

6. Masahiro Konno for the Aerogel groupDC Meeting, Apr/14/04 6 - One issue raised up; HV strain relief (LeCroy) seems to be hard to find in the lab. The minimum of purchase is 250, but we just need 16 sets. -- Others -- From Dubna (5/20 ~, 1 month) - I. Migulina - V. Ivanov - A. Litvinenko From Tsukuba - M. Konno (~5/20) - S. Takagi (4/4 - 6/25) - S. Kato (5/25 - 6/24?) - S. Sakai (5/10? - 6/30?) - M. Inaba (6/19 - 7/18) - M. Shimomura (5/10? - 8/5?) -- Manpower --