	<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
78	72	477227	13	77	385456	12	78	474586	13	05-JUL-07

Thr_Max in register units for M3R4-78

Thr_Max in register units for M3R4-78

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	69	70	72	73	80	73	67	75	77	74	71	68	74	67	74	68
FEB-2	83	80	81	68	82	75	83	70	80	72	80	71	82	68	81	80
FEB-3	85	76	78	77	84	81	80	79	78	77	77	73	80	72	81	73

Noise rate at Thr_Max [counts/sec] for M3R4-78

Noise rate at Thr_Max [counts/sec] for M3R4-78

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	485678	520179	447286	759350	389981	454192	425478	586017	324228	376289	509586	358015	497590	453993	509983	537786
FEB-2	356180	422928	290354	373372	451744	381092	284336	289000	355959	311872	395847	332509	526147	379939	520240	495780
FEB-3	478586	540986	429280	399808	416169	539475	394796	407915	435522	465084	373749	521097	351189	626991	527587	685149