3/14/2007 AD/Instrumentation DepartmentJim Zagel

1

MFW Update 3/14/07

• Latest problems

• RFT Looses Phase Lock– Real 53 MHz connected to the RFT at MI-10

on Feb 20, 2007.

• Needed to retime gates to BS Clock– Which had been done over the next few days– BUT…

3/14/2007 AD/Instrumentation DepartmentJim Zagel

2

MFWProblem: P-Bar Injection

First of 4 bunches is larger than the other 3.

3/14/2007 AD/Instrumentation DepartmentJim Zagel

3

P-Bars to RR•Huge P-Bar Bunches are transferred from the Accumulator into the Recycler ring.

3/14/2007 AD/Instrumentation DepartmentJim Zagel

4

Integrator Hold Time

• Integrator “Hold Time” from data valid was 200ns– Only 25ns is required for the Comet Digitizers.

• We reduced the Hold time to 100ns.

3/14/2007 AD/Instrumentation DepartmentJim Zagel

5

P-Bars RR to Tev

3/14/2007 AD/Instrumentation DepartmentJim Zagel

6

Retimed Acc to RR

3/14/2007 AD/Instrumentation DepartmentJim Zagel

7

New Problems

3/14/2007 AD/Instrumentation DepartmentJim Zagel

8

Oops!

• Apparently 2MHz digitizers really have a hard time digitizing at a 2.5MHz rate

• Recall we have 4 bunches separated by 400ns.

• We replaced the horizontal 2MHZ Comet with a borrowed 5MHz board.

3/14/2007 AD/Instrumentation DepartmentJim Zagel

9

New Horizontal 5MHz Comet

3/14/2007 AD/Instrumentation DepartmentJim Zagel

10

MFW So Far

• Have re-timed both wires.• Need to replace the Vertical 2MHz Comet with

5Mhz board.• Need to check flies on next Tev shot

– Set appropriate voltages to eliminate saturation.

3/14/2007 AD/Instrumentation DepartmentJim Zagel

11

Test Loss Monitor at A0 Update

3/14/2007 AD/Instrumentation DepartmentJim Zagel

12

Pulsed LED Signal

3/14/2007 AD/Instrumentation DepartmentJim Zagel

13

A0 Loss Monitor Test

3/14/2007 AD/Instrumentation DepartmentJim Zagel

14

36 bunches in TevUnfortunately the PMT is not Powered

3/14/2007 AD/Instrumentation DepartmentJim Zagel

15

Support For new Wire at A0• Need

– New Cables to Tunnel– New Computer– New VME Chassis– New Motor Control Hardware– PMT Power Supply

• Software– Minor modifications to generic FW code– Database Changes