- Bai, JZ;
- Bao, HC;
- Blum, I;
- Chai, ZW;
- Chen, GP;
- Chen, HF;
- Chen, J;
- Chen, JC;
- Chen, Y;
- Chen, YB;
- Chen, YQ;
- Cheng, BS;
- Chu, XM;
- Cui, XZ;
- Ding, HL;
- Ding, WY;
- Dong, LY;
- Du, YY;
- Du, ZZ;
- Dunwoodie, W;
- Fang, J;
- Fang, WZ;
- Gao, CS;
- Gao, ML;
- Gao, SQ;
- Gratton, P;
- Gu, JH;
- Gu, SD;
- Gu, WX;
- Guo, YN;
- Han, HG;
- Han, SW;
- Harris, FA;
- Han, Y;
- He, J;
- He, M;
- Heng, YK;
- Hitlin, DG;
- Hu, GY;
- Hu, HB;
- Hu, HM;
- Hu, JL;
- Hu, QH;
- Hu, T;
- Hu, XQ;
- Huang, GS;
- Huang, JD;
- Huang, YZ;
- Izen, JM;
- Jiang, CH;
- Jiang, YY;
- Jin, Y;
- Jones, BD;
- Ju, X;
- Ke, ZJ;
- Kelsey, MH;
- Kim, BK;
- Kong, D;
- Lai, YF;
- Lang, PF;
- Lankford, A;
- Li, CG;
- Li, F;
- Li, HB;
- Li, J;
- Li, PQ;
- Li, Q;
- Li, RB;
- Li, W;
- Li, WD;
- Li, WG;
- Li, WH;
- Li, XH;
- Li, XN;
- Liu, HM;
- Liu, J;
- Liu, JH;
- Liu, J;
- Liu, Q;
- Liu, QJ;
- Liu, RG;
- Liu, Y;
- Liu, ZX;
- Lou, JS;
- Lou, XC;
- Lowery, B;
- Lu, HY;
- Lu, JG;
- Luo, H;
- Luo, SQ;
- Luo, XL;
- Ma, EC;
- Ma, JM;
- Malchow, R;
- Mandelkern, M;
- Mao, HS;
- Mao, ZP;
- Meng, XC;
- Mo, XH;
- Mu, LG
- et al.
The Beijing Spectrometer (BES) detector is a general purpose solenoid detector at the Beijing Electron Positron Collider in Beijing, China. The recent upgrade of the initial BES detector to the improved BES II detector is described. A new drift chamber, time-of-flight counter, luminosity monitor compatible with a low-β lattice was built as well as the vertex chamber.