Operating Parameters, 1998-1999
The relevant parameters for the 1998-1999 running periods, selected by
Eric Hjort, are summarized in the table below.
| |
Z |
Wire Diameter |
Potential |
| |
(cm) |
(cm) |
(V) |
| Cathode
| 0.0 |
- |
-31000.0 |
| Gating grid |
+/-208.7 |
0.0075 |
-102.5 |
| Ground wires |
+/-209.3 |
0.0075 |
0.0 |
| Inner: |
| Anode wires |
+/-209.5 |
0.0020 |
+/-1150.0 |
| Pad plane |
+/-209.7 |
- |
-1.5 |
| Outer: |
| Anode wires |
+/-209.7 |
0.0020 |
1400.0 |
| Pad plane |
+/-210.1 |
- |
-1.5 |
Nominal TPC parameters for 1998--1999.
- The gating grid potential is for the open state; the closed-state
potentials are presently symmetric at -75 V and -130 V.
R
- Anode high voltages, as measured.
- Estimated P10 gas gains with these voltages are (from SN0247):
Gain_inner = 0.000760 exp(0.01305 V_inner) = 2503
Gain_outer = 0.000760 exp(0.01026 V_outer) = 1315
Page created by Roy Bossingham,
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Last modified on June 29, 2000