Contents

SIS geometry factors

[SIS O geometry factors]
Oxygen geometry factor for individual detectors (range 0-8). "Range 0" particles stop in matrix detector 2 (M2).
[SIS Si geometry factors]
Silicon geometry factor for individual detectors (range 0-8).
[SIS Fe geometry factors]
Iron geometry factor for individual detectors (range 0-8).

SIS functional diagram

[SIS Event Flow]

SIS Stack Detector Physical Parameters/Hybrid Gains & Offsets

All SIS stack detectors are "single groove"; that is, they have only one active area of 65 cm².

Stack A (Avg.) Thickness (µm) (Avg.) Deadlayer (µm) Amplifier Gain (MeV/ch) Offset (ch)
T1 99 0.71 0.2215 48.05
T2 108 0.86 0.2233 47.60
T3 251 0.64 0.4377 47.61
T4 489 0.43 0.6843 47.76
T5 745 0.58 1.0411 49.66
T6-1 1007 0.71 1.9984 48.33
T6-2 897 0.47
T6-3 747 0.46
T7-1 978 0.49 3.0375 48.55
T7-2 724 0.40
T7-3 513 0.60
T7-4 491 0.66
T7-5 489 0.53
T7-6 500 0.59
T8 980 0.49 0.1307 47.81
Stack B
T1 100 0.63 0.2295 49.03
T2 104 0.87 0.2210 48.40
T3 250 0.45 0.4393 47.61
T4 506 0.57 0.6984 45.73
T5 752 0.56 1.0318 46.35
T6-1 994 0.55 2.0404 45.90
T6-2 910 0.43
T6-3 767 0.49
T7-1 1006 0.47 2.9688 44.41
T7-2 745 0.54
T7-3 513 0.50
T7-4 481 0.59
T7-5 506 0.44
T7-6 501 0.46
T8 993 0.53 0.1333 44.12

Calibration Data and Thickness Maps (sample)

The final response of each telescope was tested at the GSI accelerator facility in Darmstadt, Germany. The figure below illustrates data from one particular beam run. Isotopes can be seen as peaks within each charge group.

[SIS Mass Histogram]

Each detector was also mapped for thickness variations using both a custom- designed interferometer system and energy deposition measurements taken at the NSCL accelerator facility at Michigan State University. The figure below shows examples of such maps; the contours are 1 µm each.

[SIS detector thickness maps]

Resource Allocation and Nominal Detector Specifications

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Last modified 12 September 1997, mrt
URL: /ACE/CRIS_SIS/sishw.html