	<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
92	83	441635	12	77	439946	12	80	458340	12	18-MAR-07

Thr_Max in register units for M3R4-92

Thr_Max in register units for M3R4-92

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	79	84	77	84	79	82	81	94	71	86	82	84	81	84	80	93
FEB-2	81	79	80	80	77	75	80	81	70	72	80	73	80	73	79	68
FEB-3	79	75	73	92	70	73	76	89	78	86	71	81	82	84	87	84

Noise rate at Thr_Max [counts/sec] for M3R4-92

Noise rate at Thr_Max [counts/sec] for M3R4-92

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	366803	624828	435697	460270	426780	460302	406263	309609	329316	367829	462675	395681	384347	508424	393750	733586
FEB-2	351831	524843	381860	523493	445311	391483	427132	335661	313404	532671	301210	290290	571174	445386	566136	637252
FEB-3	525338	432872	473463	598384	415379	447999	645560	528584	423341	261684	381205	323663	401848	387963	601159	484997