Event created in the LocalSystem account

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I have EventWaitHandle created in the service running in the LocalSystem
account. In the client application running under user account, I try to
create event with the same name - actually to attach to existing event. I
have error "Access to the path <event namedenied".
How can I create event in the client project initializing properly
EventWaitHandle Security parameter, to get access to this event?

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Using API, i can do this by the following way:

SECURITY_DESCRI PTOR sd = {0};
InitializeSecur ityDescriptor(& sd, SECURITY_DESCRI PTOR_REVISION);
SetSecurityDesc riptorDacl(&sd, TRUE, NULL, FALSE);

SECURITY_ATTRIB UTES sa = {0};
sa.nLength = sizeof(SECURITY _ATTRIBUTES);
sa.bInheritHand le = FALSE;
sa.lpSecurityDe scriptor = &sd;

HANDLE h = CreateEvent(&sa , TRUE, FALSE, name1);

Event created by this code is available both from system and user accounts.
How to do the same with managed event?