	<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
191	79	479651	13	83	475804	13	77	560211	13	19-JAN-07		Sens=7.5mV/fc Th=15fc

Thr_Max in register units for M3R4-191

Thr_Max in register units for M3R4-191

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	80	73	82	75	80	77	83	70	83	77	82	76	83	83	83	82
FEB-2	85	89	94	88	85	70	88	75	96	78	84	82	78	75	80	77
FEB-3	75	86	79	78	77	76	76	80	76	83	74	78	70	82	72	75

Noise rate at Thr_Max [counts/sec] for M3R4-191

Noise rate at Thr_Max [counts/sec] for M3R4-191

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	495546	701485	400312	720570	319026	427810	402136	403143	433267	283067	414162	365436	436832	720697	589181	561746
FEB-2	479242	480808	450276	478436	436218	476803	438069	418278	362466	517382	520815	394338	436802	376860	738492	607580
FEB-3	440349	587787	562947	420005	517286	565861	454566	433508	573014	428720	565544	513232	940907	716283	693263	550108