The following table will give the flatness and symmetry values of the sammer SIDDHARTH -4 LINAC machine

Energy : 6MV SIDDHARTH-4 LINAC

Field Size DepthIn plane Cross Plane Diagonal(+45) Diagonal(-45)

Flatness Symmetry Flatness Symmetry Flatness Symmetry Flatness Symmetry

5cmx5 cmDmax 8.7 0.1 8.6 0.2 9.1 1.5 7.4 0.6

10 cm 7.5 0.2 7.7 0.0 11.4 1.4 10.0 0.4

10cmx10 cmDmax 3.4 0.5 3.0 0.2 4.0 0.7 3.7 0.1

10 cm 4.6 0.4 4.5 0.2 6.4 0.7 6.4 0.5

30cmx30 cm

Dmax 2.6 0.1 2.6 0.2 3.1 0.5 3.3 0.2

10 cm 4.6 0.3 4.7 0.0 6.7 0.3 6.7 0.3

Note : the above mentioned values are taken with new flattener and the flattener had brought Shri V. L. Shinde Sir from Sammer Mumbai on dated 30/10/2015.

PDD 10 x10 cm :-

Damx = 1.6%

10cm depth= 67.3%

Imag =102 amp, Gun fil =6.3 v, I target = 4.48, M fil =8.4v, EHT variac =86 %, PRF=200.

Energy measurement 31/10/2015

Meter reading J20 J10

M1 17.54 nC 25.87 nC

M2 17.42 nC 25.97 nC

M3 17.30 nC 25.92 nC

M4 17.28 nC 25.88 nC

avg 17.385 nC 25.91 nC

Energy= J20/j10

=0.6709