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ID03 Description
 

X-Ray source

last modified 16-03-2009 13:11

Description


The ID03 beamline is illuminated by three undulators installed in a low-β section of the ESRF synchrotron ring. The source size is 140x50 µm (fwhm) HxV, with a beam divergence of 210x16 µrad (fwhm) HxV.

  • The insertion device vessel has a 10 mm thickness allowing a minimum undulator gap of 11 mm.
  • The beamline is equipped with a high power front end allowing the simultaneous use of more than one undulator completely closed to the minimum gap.
  • Two undulators have a 35 mm period and the third one has a 42 mm period.

 

The next two figures give the calculated photon flux for the two different undulators for the same value of the deflection coefficient K=2.3, which corresponds to a closed gap of 11 mm for the U35. The energy bandwidth for the calculations is 0.1%. The actual bandwidth for a double-bounce Si(111) crystal is about 0.01%.

source_fig1a

source_fig1b

The values in the tables below give the theoretical power, the photon energy and the flux as a function of the gap of the U35 and U42 undulators for the 1st, 3rd, 5th and 7th harmonics. The flux was calculated for the optical acceptance of the monochromator and mirror which is 5x0.7 mm @34m from the source. The energy bandwidth for the calculations is 0.1%. The actual bandwidth for a double-bounce Si(111) crystal is about 0.01%.

U42


1st harmonics

3rd harmonics

5th harmonics

7th harmonics

Gap [mm]

Power

[W]

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

16

122

2280

2.24E+14

6879

1.61E+14

11479

9.41E+13

16080

5.26E+13

17

113

2534

2.30E+14

7639

1.58E+14

12748

8.56E+13

17859

4.50E+13

18

104

2799

2.35E+14

8443

1.53E+14

14090

7.60E+13

19738

3.72E+13

19

96

3077

2.38E+14

9283

1.44E+14

15494

6.57E+13

21706

2.95E+13

20

88

3366

2.40E+14

10155

1.32E+14

16949

5.50E+13

23744

2.25E+13

21

81

3661

2.38E+14

11047

1.19E+14

18439

4.45E+13

25833

1.64E+13

22

75

3960

2.35E+14

11952

1.05E+14

19950

3.49E+13

27950

1.14E+13

23

68

4260

2.30E+14

12858

9.03E+13

21464

2.64E+13

30072

7.56E+12

24

62

4558

2.23E+14

13757

7.58E+13

22966

1.93E+13

32175

4.78E+12

25

57

4849

2.15E+14

14638

6.21E+13

24438

1.36E+13

34238

2.88E+12

26

51

5132

2.04E+14

15493

4.97E+13

25864

9.31E+12

36238

1.66E+12

27

46

5403

1.93E+14

16312

3.89E+13

27235

6.15E+12

38158

9.12E+11

28

42

5660

1.80E+14

17091

2.98E+13

28536

3.93E+12

39981

4.80E+11

29

37

5903

1.67E+14

17824

2.24E+13

29760

2.43E+12

41697

2.43E+11

30

33

6128

1.54E+14

18508

1.65E+13

30901

1.46E+12

43297

1.18E+11

31

29

6337

1.41E+14

19139

1.20E+13

31957

8.57E+11

44776

5.54E+10

32

26

6528

1.28E+14

19719

8.57E+12

32925

4.89E+11

46133

2.52E+10

33

22

6703

1.15E+14

20247

6.05E+12

33807

2.73E+11

47370

1.11E+10

34

20

6861

1.03E+14

20725

4.21E+12

34606

1.49E+11

48488

4.80E+09

35

17

7003

9.25E+13

21155

2.90E+12

35324

8.01E+10

49495

2.02E+09

 

U35

 

1st harmonics

3rd harmonics

5th harmonics

7th harmonics

Gap [mm]

Power

[W]

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

E

[eV]

ph/s/0.1%

11

179

2634

2.87E+14

7940

2.05E+14

13247

1.19E+14

18556

6.75E+13

12

163

2992

2.97E+14

9017

1.98E+14

15045

1.07E+14

21076

5.66E+13

13

148

3374

3.03E+14

10170

1.89E+14

16971

9.32E+13

23774

4.50E+13

14

134

3778

3.05E+14

11388

1.75E+14

19004

7.74E+13

26622

3.39E+13

15

121

4197

3.05E+14

12655

1.57E+14

21119

6.16E+13

29584

2.40E+13

16

110

4627

3.03E+14

13952

1.36E+14

23284

4.68E+13

32618

1.59E+13

17

99

5060

2.95E+14

15258

1.14E+14

25465

3.38E+13

35675

9.86E+12

18

88

5489

2.84E+14

16554

9.26E+13

27629

2.33E+13

38706

5.71E+12

19

79

5907

2.69E+14

17818

7.25E+13

29740

1.52E+13

41665

3.08E+12

20

70

6309

2.53E+14

19034

5.49E+13

31770

9.50E+12

44509

1.56E+12

21

62

6690

2.34E+14

20184

4.03E+13

33691

5.65E+12

47201

7.39E+11

22

54

7045

2.14E+14

21258

2.88E+13

35484

3.21E+12

49714

3.30E+11

23

47

7372

1.94E+14

22247

2.00E+13

37136

1.75E+12

52028

1.39E+11

24

40

7669

1.73E+14

23147

1.36E+13

38639

9.14E+11

54135

5.58E+10

25

34

7938

1.54E+14

23957

9.01E+12

39991

4.61E+11

56030

2.14E+10

26

29

8176

1.36E+14

24679

5.88E+12

41197

2.26E+11

57719

7.88E+09

27

25

8387

1.19E+14

25316

3.77E+12

42261

1.08E+11

0

0.00E+00

28

21

8571

1.03E+14

25875

2.39E+12

43193

5.01E+10

0

0.00E+00

29

18

8732

8.88E+13

26360

1.49E+12

44005

2.28E+10

0

0.00E+00

30

15

8871

7.63E+13

26781

9.23E+11

44706

1.02E+10

0

0.00E+00

 
 
European Synchrotron Radiation Facility