1

Some Result of HyCal Resolution

Liyang Jiang

CIAE/UNCW

2

Energy Resolution of PWO

3

General Information

• Run: 4280;

• Crystal: centered on W2016 for 5 minute deep statistics run;

• Hycal Calibration Constants: gain5_iter;

• Landau*Gaussian Fit.

4

Eg=5.47GeV Eg=4.76GeV

Eg=3.09GeV Eg=2.27GeV

Fitting Results (PWO)

5

Linearity of Ec at PWOE

clu

ste

r (G

eV

)

6

Sigma/E vs Eg at PWO

Ep

EppE

210

7

Energy Resolution at Lead Glass

8

Information

• Run: 4279;

• Crystal: centered on G657 for 5 minute deep statistics run;

• Hycal Calibration Constants: gain5_iter;

• Landau*Gaussian Fit.

9

Fitting Results (Glass)

Eg=5.47GeV Eg=4.76GeV

Eg=3.09GeV Eg=2.27GeV

10

Linearity of Ec at GlassE

clu

ste

r (G

eV

)

11

Sigma/E vs Eg at Glass

Ep

EppE

210

12

Position Resolution at PWO

13

Gaussian Fit Results (PWO)

X (cm) X (cm)

X (cm) X (cm)

Eg=5.47GeV Eg=4.76GeV

Eg=3.09GeV Eg=2.27GeV

14

X VS E gamma (PWO)X

(c

m)

15

X sigma VS E gamma (PWO)

Ep

Epp 21

0

16

Position Resolution at Glass

17

Gaussian Fit Results (Glass)

Eg=5.47GeV Eg=4.76GeV

Eg=3.09GeV Eg=2.27GeV

18

X VS E gamma (Glass)

y = -0. 007x2 + 0. 0962x - 44. 589R2 = 0. 9861

-44. 42-44. 4

-44. 38-44. 36-44. 34-44. 32-44. 3

-44. 28-44. 26-44. 24

2 2. 5 3 3. 5 4 4. 5 5 5. 5 6E gamma (GeV)

X (c

m)

19

X sigma VS E gamma (Glass)

Ep

Epp 21

0

20

Position Resolution at Different Place

21

PWO Information

• Run: 5348 (Second Snake Scan)

• Scan from W1884 to W1851

22

Fitting Results

23

Sigma Y VS X (PWO)

0. 25

0. 27

0. 29

0. 31

0. 33

0. 35

0. 37

0. 39

- 5 - 3 - 1 1 3 5

X (cm)

Sigm

a Y

(cm)

24

25

Beam-on modular id of Run 4279

Erratum in Logbook

• Logbook, page 240, Run 4279: “Centered on Glass 587 – deep statistics”;

• Online database, Run 4279: “Centered on G657 for 5 minute deep statistics run”.

26

Erratum in Logbook

• Information from EPICS bank;

• Reconstructed X and Y position;

• Energy deposit in each modular.

27

Position info in EPICS bank

• In EPICS bank, the value of position is not changed through Run 4279. – ptrans_x.RBV

=448.47 mm, – ptrans_y.RBV

=257.37 mm.

Erratum in Logbook

28

Reconstructed position

X=-44.34 cm

Y=-25.53 cm

Erratum in Logbook

29

Mean Energy deposited in each modular (T counter 30)

G595

1.515E-03

G596

4.401E-03

G597

6.869E-03

G598

4.868E-03

G599

1.817E-03

G625

3.884E-03

G626

2.487E-02

G627

7.279E-02

G628

2.629E-02

G629

5.202E-03

G655

6.400E-03

G656

7.521E-02

G657

2.590E+00

G658

1.084E-01

G659

8.046E-03

G685

5.443E-03

G686

2.572E-02

G687

1.057E-01

G688

3.230E-02

G689

6.081E-03

G715

1.868E-03

G716

5.196E-03

G717

8.647E-03

G718

5.512E-03

G719

1.831E-03

Erratum in Logbook

30

Conclusion

• The evidence listed above proved that in Run 4279, the beam is hit on the modular G657. The note about Run 4279 in the logbook Page 240 “Centered on Glass 587 …” should be “Centered on Glass 657…”.

• NO Lead Glass modular numbered 587.

Erratum in Logbook