To: ACIS Team
From: Beverly LaMarr (fergason@space.mit.edu)
Subject: Resolution of ACIS Devices at -110C, -120C and -123C. Date: 10 January 2000

Documented here are the full width half max values for the rightmost quadrant of s2, i1, and s3 at -110C, -120C and -123C.

For each 128 row by 256 column bin, a gaussian was fit to each of the three main peaks at 1487 eV, 4510 eV, and 5894 eV.

The values were converted to eV from ADU using the gain for the bin closest to the framestore for each set.

Figures 1 through 3 show the resolution plots for s2. Figures 4 through 6 show the resolution plots for i1. Figures 7 through 9 show the resolution plots for s3.

Figures:

1. Front-illuminated Detector S2 Resolution Vs Row Number, 1.487keV gif / ps
2. Front-illuminated Detector S2 Resolution Vs Row Number, 4.510keV gif / ps
3. Front-illuminated Detector S2 Resolution Vs Row Number, 5.894keV gif / ps
4. Front-illuminated Detector I1 Resolution Vs Row Number, 1.487keV gif / ps
5. Front-illuminated Detector I1 Resolution Vs Row Number, 4.510keV gif / ps
6. Front-illuminated Detector I1 Resolution Vs Row Number, 5.894keV gif / ps
7. Back-illuminated Detector S3 Resolution Vs Row Number, 1.487keV gif / ps
8. Back-illuminated Detector S3 Resolution Vs Row Number, 4.510keV gif / ps
9. Back-illuminated Detector S3 Resolution Vs Row Number, 5.894keV gif / ps

   Tables:

   1. S2, I1. html / ascii
   2. S3 html / ascii