	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
146	77	425861	12	73	426356	11	73	388913	12	06-JUL-07

Thr_Max in register units for M3R4-146

Thr_Max in register units for M3R4-146

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	76	75	77	81	77	76	75	83	72	74	77	77	73	81	83	75
FEB-2	80	72	75	61	73	74	73	71	75	72	76	70	74	72	77	71
FEB-3	77	71	76	67	71	70	75	66	69	66	72	78	77	75	79	79

Noise rate at Thr_Max [counts/sec] for M3R4-146

Noise rate at Thr_Max [counts/sec] for M3R4-146

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	432460	539644	341047	659392	226483	627837	244449	310495	211000	382005	448613	308371	517563	387265	525377	651778
FEB-2	385269	429987	472112	376527	476203	326675	521007	454908	217966	333017	480815	297185	361642	463756	486469	738152
FEB-3	340954	607800	470987	378138	316975	324237	441512	334428	184396	326005	357851	353283	414192	334746	470472	566628