Introduction • Doc-db @ http://

juno.ihep.ac.cn/cgi-bin/Dev_DocDB/DisplayMeeting?conferenceid=54

• 3.5 days of workshop, focusing on software side– How to install/run/analyze current simulation?

• I will try to summarize the various topics discussed in this workshop

Liangjian’s talk

• Better than 1.9% @ 2.5 MeV is the requirement

• One can consider P.E. counting for distance PMT and late light etc.

• Two electronics scheme:– IHEP: global trigger read everything after trigger– German: triggerless only read things once passing certain

threshold lower threshold? Loss information?

6

Acrylic OptionFrom inside to outside: liquid scintillator, acrylic sphere ,water, strut and stainless steel truss.

Number of stainless steel struts: 480. Strut outer Radius : 51mm Strut thickness: 12 mm. 560 PMTs removed because of stainless steel struts.Number of PMTs: 17746 . Coverage ~75.27%.

400m

mStainless Steel StrutStainless Steel Acrylic thickness: 12cm

Ziyan Deng

7

Balloon OptionFrom inside to outside:liquid scintillator, balloon, acrylic board ,LAB , strut and stainless steel tank.

The material of balloon is nylon, ETFE, or FEP, or some other materials

In the simulation we assume that strut is same as acrylic option , but material is acrylic.

Number of PMTs: 17746 . Coverage ~75.27%.

If acrylic struts are thin enough to be placed in the gap between PMTs, coverage is 77.8%

Acrylic board

Balloon

Thickness of balloon: 200um, acrylic board: 1cm

Acrylic strut

Ziyan Deng

8

TotalPE distribution with/without explosion proof

Acrylic Option Balloon Option

Acrylic option: refractive index of acrylic and water different.

Balloon option: refractive index of acrylic and LAB similar.

With/without explosion proof, PMT placement is the same.

Ziyan Deng

Comments of Resolution study

• Still need to include the electronics simulation into the chain

• Noise has not been totally added for the resolution study

• Some dedicated toy simulation has been worked out to attack some particular problem

• Anatael and Stefano

• Changgeng

• Marco

Simulation Support• For each sub-system, what simulation supports do you

need?– How much effort can each sub-system working group put in?

• We can hold a dedicated meeting to teach running simulation– A list of major questions needs to be addressed for the Feb

workshop as well as the following proposal submission• We can try to cover as much as we could

• Current man-power (Xin, Chao, Jiajie)– Calibration tube for Pelletron – Water Pool Simulation – …– More people are welcome!